From 789a16bae7b6ac9fd1fa5873be038f38cdb28e2b Mon Sep 17 00:00:00 2001
From: Max Loh <mloh@google.com>
Date: Wed, 10 Apr 2024 08:35:40 -0700
Subject: [PATCH] aslgen additional on-device to human-readable implementation

Bug: 329902686
Test: Unit tests.
Change-Id: I56f60a8eb5771db78e42f1b7662bcdee59a67dcb
---
 .../java/com/android/asllib/AslConverter.java | 12 ++-
 .../marshallable/AndroidSafetyLabel.java      | 13 ++-
 .../AndroidSafetyLabelFactory.java            | 26 +++++-
 .../android/asllib/marshallable/AppInfo.java  | 51 ++++++++++-
 .../asllib/marshallable/AppInfoFactory.java   | 55 ++++++++++--
 .../asllib/marshallable/DataCategory.java     |  4 +-
 .../android/asllib/marshallable/DataType.java |  4 +-
 .../asllib/marshallable/DeveloperInfo.java    | 27 +++++-
 .../marshallable/DeveloperInfoFactory.java    | 42 +++++++--
 .../asllib/marshallable/SafetyLabels.java     | 14 ++-
 .../marshallable/SafetyLabelsFactory.java     | 33 ++++++-
 .../asllib/marshallable/SecurityLabels.java   |  9 +-
 .../marshallable/SecurityLabelsFactory.java   | 11 ++-
 .../marshallable/SystemAppSafetyLabel.java    |  5 +-
 .../SystemAppSafetyLabelFactory.java          | 10 ++-
 .../marshallable/ThirdPartyVerification.java  |  4 +-
 .../ThirdPartyVerificationFactory.java        | 11 ++-
 .../asllib/marshallable/TransparencyInfo.java |  9 +-
 .../marshallable/TransparencyInfoFactory.java | 19 +++-
 .../com/android/asllib/util/XmlUtils.java     | 86 ++++++++++++++++++-
 .../java/com/android/asllib/AslgenTests.java  | 33 +++++--
 .../marshallable/AndroidSafetyLabelTest.java  | 25 ++++--
 .../asllib/marshallable/AppInfoTest.java      | 59 +++++++++++--
 .../asllib/marshallable/DataCategoryTest.java |  6 +-
 .../asllib/marshallable/DataLabelsTest.java   |  4 -
 .../marshallable/DeveloperInfoTest.java       | 44 ++++++++--
 .../asllib/marshallable/SafetyLabelsTest.java | 24 ++++--
 .../marshallable/SecurityLabelsTest.java      | 28 ++++--
 .../SystemAppSafetyLabelTest.java             | 22 +++--
 .../ThirdPartyVerificationTest.java           | 22 +++--
 .../marshallable/TransparencyInfoTest.java    | 18 ++--
 .../android/asllib/testutils/TestUtils.java   | 14 +++
 .../androidsafetylabel/od/missing-version.xml |  2 +
 .../safetylabels/od/missing-version.xml       |  2 +
 .../systemappsafetylabel/od/missing-url.xml   |  2 +
 .../thirdpartyverification/od/missing-url.xml |  2 +
 .../hr/with-developer-info.xml                |  2 +-
 .../od/with-developer-info.xml                |  1 +
 .../asllib/validmappings/general/hr.xml       |  6 +-
 .../asllib/validmappings/general/od.xml       |  1 +
 40 files changed, 661 insertions(+), 101 deletions(-)
 create mode 100644 tools/app_metadata_bundles/src/test/resources/com/android/asllib/androidsafetylabel/od/missing-version.xml
 create mode 100644 tools/app_metadata_bundles/src/test/resources/com/android/asllib/safetylabels/od/missing-version.xml
 create mode 100644 tools/app_metadata_bundles/src/test/resources/com/android/asllib/systemappsafetylabel/od/missing-url.xml
 create mode 100644 tools/app_metadata_bundles/src/test/resources/com/android/asllib/thirdpartyverification/od/missing-url.xml

diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/AslConverter.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/AslConverter.java
index b98161dd26fb..191f38d3df80 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/AslConverter.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/AslConverter.java
@@ -65,8 +65,10 @@ public class AslConverter {
                 return new AndroidSafetyLabelFactory()
                         .createFromHrElements(XmlUtils.listOf(appMetadataBundles));
             case ON_DEVICE:
-                throw new IllegalArgumentException(
-                        "Parsing from on-device format is not supported at this time.");
+                Element bundleEle =
+                        XmlUtils.getSingleChildElement(document, XmlUtils.OD_TAG_BUNDLE, true);
+                return new AndroidSafetyLabelFactory()
+                        .createFromOdElements(XmlUtils.listOf(bundleEle));
             default:
                 throw new IllegalStateException("Unrecognized input format.");
         }
@@ -89,8 +91,10 @@ public class AslConverter {
 
         switch (format) {
             case HUMAN_READABLE:
-                throw new IllegalArgumentException(
-                        "Outputting human-readable format is not supported at this time.");
+                for (var child : asl.toHrDomElements(document)) {
+                    document.appendChild(child);
+                }
+                break;
             case ON_DEVICE:
                 for (var child : asl.toOdDomElements(document)) {
                     document.appendChild(child);
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabel.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabel.java
index ecfad91a378f..72140a17297c 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabel.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabel.java
@@ -65,6 +65,17 @@ public class AndroidSafetyLabel implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element aslEle = doc.createElement(XmlUtils.HR_TAG_APP_METADATA_BUNDLES);
+        aslEle.setAttribute(XmlUtils.HR_ATTR_VERSION, String.valueOf(mVersion));
+        if (mSafetyLabels != null) {
+            XmlUtils.appendChildren(aslEle, mSafetyLabels.toHrDomElements(doc));
+        }
+        if (mSystemAppSafetyLabel != null) {
+            XmlUtils.appendChildren(aslEle, mSystemAppSafetyLabel.toHrDomElements(doc));
+        }
+        if (mTransparencyInfo != null) {
+            XmlUtils.appendChildren(aslEle, mTransparencyInfo.toHrDomElements(doc));
+        }
+        return XmlUtils.listOf(aslEle);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabelFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabelFactory.java
index 41ce6e55e989..c53cbbf99a46 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabelFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AndroidSafetyLabelFactory.java
@@ -56,10 +56,32 @@ public class AndroidSafetyLabelFactory implements AslMarshallableFactory<Android
                 version, systemAppSafetyLabel, safetyLabels, transparencyInfo);
     }
 
-    /** Creates an {@link AslMarshallableFactory} from on-device DOM elements */
+    /** Creates an {@link AndroidSafetyLabel} from on-device DOM elements */
     @Override
     public AndroidSafetyLabel createFromOdElements(List<Element> elements)
             throws MalformedXmlException {
-        return null;
+        Element bundleEle = XmlUtils.getSingleElement(elements);
+        Long version = XmlUtils.getOdLongEle(bundleEle, XmlUtils.OD_NAME_VERSION, true);
+
+        Element safetyLabelsEle =
+                XmlUtils.getOdPbundleWithName(bundleEle, XmlUtils.OD_NAME_SAFETY_LABELS, false);
+        SafetyLabels safetyLabels =
+                new SafetyLabelsFactory().createFromOdElements(XmlUtils.listOf(safetyLabelsEle));
+
+        Element systemAppSafetyLabelEle =
+                XmlUtils.getOdPbundleWithName(
+                        bundleEle, XmlUtils.OD_NAME_SYSTEM_APP_SAFETY_LABEL, false);
+        SystemAppSafetyLabel systemAppSafetyLabel =
+                new SystemAppSafetyLabelFactory()
+                        .createFromOdElements(XmlUtils.listOf(systemAppSafetyLabelEle));
+
+        Element transparencyInfoEle =
+                XmlUtils.getOdPbundleWithName(bundleEle, XmlUtils.OD_NAME_TRANSPARENCY_INFO, false);
+        TransparencyInfo transparencyInfo =
+                new TransparencyInfoFactory()
+                        .createFromOdElements(XmlUtils.listOf(transparencyInfoEle));
+
+        return new AndroidSafetyLabel(
+                version, systemAppSafetyLabel, safetyLabels, transparencyInfo);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfo.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfo.java
index 21f328d8e2d0..129733ebc1b6 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfo.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfo.java
@@ -146,6 +146,55 @@ public class AppInfo implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element appInfoEle = doc.createElement(XmlUtils.HR_TAG_APP_INFO);
+        if (this.mTitle != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_TITLE, this.mTitle);
+        }
+        if (this.mDescription != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_DESCRIPTION, this.mDescription);
+        }
+        if (this.mContainsAds != null) {
+            appInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_CONTAINS_ADS, String.valueOf(this.mContainsAds));
+        }
+        if (this.mObeyAps != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_OBEY_APS, String.valueOf(this.mObeyAps));
+        }
+        if (this.mAdsFingerprinting != null) {
+            appInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_ADS_FINGERPRINTING, String.valueOf(this.mAdsFingerprinting));
+        }
+        if (this.mSecurityFingerprinting != null) {
+            appInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_SECURITY_FINGERPRINTING,
+                    String.valueOf(this.mSecurityFingerprinting));
+        }
+        if (this.mPrivacyPolicy != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_PRIVACY_POLICY, this.mPrivacyPolicy);
+        }
+        if (this.mSecurityEndpoints != null) {
+            appInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_SECURITY_ENDPOINTS, String.join("|", this.mSecurityEndpoints));
+        }
+        if (this.mFirstPartyEndpoints != null) {
+            appInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_FIRST_PARTY_ENDPOINTS,
+                    String.join("|", this.mFirstPartyEndpoints));
+        }
+        if (this.mServiceProviderEndpoints != null) {
+            appInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_SERVICE_PROVIDER_ENDPOINTS,
+                    String.join("|", this.mServiceProviderEndpoints));
+        }
+        if (this.mCategory != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_CATEGORY, this.mCategory);
+        }
+        if (this.mEmail != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_EMAIL, this.mEmail);
+        }
+        if (this.mWebsite != null) {
+            appInfoEle.setAttribute(XmlUtils.HR_ATTR_WEBSITE, this.mWebsite);
+        }
+        return XmlUtils.listOf(appInfoEle);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfoFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfoFactory.java
index 6fcf637fe069..c5069619e069 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfoFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/AppInfoFactory.java
@@ -35,15 +35,16 @@ public class AppInfoFactory implements AslMarshallableFactory<AppInfo> {
             return null;
         }
 
-        String title = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_TITLE);
-        String description = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_DESCRIPTION);
+        String title = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_TITLE, true);
+        String description = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_DESCRIPTION, true);
         Boolean containsAds = XmlUtils.getBoolAttr(appInfoEle, XmlUtils.HR_ATTR_CONTAINS_ADS, true);
         Boolean obeyAps = XmlUtils.getBoolAttr(appInfoEle, XmlUtils.HR_ATTR_OBEY_APS, true);
         Boolean adsFingerprinting =
                 XmlUtils.getBoolAttr(appInfoEle, XmlUtils.HR_ATTR_ADS_FINGERPRINTING, true);
         Boolean securityFingerprinting =
                 XmlUtils.getBoolAttr(appInfoEle, XmlUtils.HR_ATTR_SECURITY_FINGERPRINTING, true);
-        String privacyPolicy = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_PRIVACY_POLICY);
+        String privacyPolicy =
+                XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_PRIVACY_POLICY, true);
         List<String> securityEndpoints =
                 XmlUtils.getPipelineSplitAttr(
                         appInfoEle, XmlUtils.HR_ATTR_SECURITY_ENDPOINTS, true);
@@ -53,8 +54,8 @@ public class AppInfoFactory implements AslMarshallableFactory<AppInfo> {
         List<String> serviceProviderEndpoints =
                 XmlUtils.getPipelineSplitAttr(
                         appInfoEle, XmlUtils.HR_ATTR_SERVICE_PROVIDER_ENDPOINTS, true);
-        String category = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_CATEGORY);
-        String email = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_EMAIL);
+        String category = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_CATEGORY, true);
+        String email = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_EMAIL, true);
         String website = XmlUtils.getStringAttr(appInfoEle, XmlUtils.HR_ATTR_WEBSITE, false);
 
         return new AppInfo(
@@ -76,6 +77,48 @@ public class AppInfoFactory implements AslMarshallableFactory<AppInfo> {
     /** Creates an {@link AslMarshallableFactory} from on-device DOM elements */
     @Override
     public AppInfo createFromOdElements(List<Element> elements) throws MalformedXmlException {
-        return null;
+        Element appInfoEle = XmlUtils.getSingleElement(elements);
+        if (appInfoEle == null) {
+            AslgenUtil.logI("No AppInfo found in od format.");
+            return null;
+        }
+
+        String title = XmlUtils.getOdStringEle(appInfoEle, XmlUtils.OD_NAME_TITLE, true);
+        String description =
+                XmlUtils.getOdStringEle(appInfoEle, XmlUtils.OD_NAME_DESCRIPTION, true);
+        Boolean containsAds =
+                XmlUtils.getOdBoolEle(appInfoEle, XmlUtils.OD_NAME_CONTAINS_ADS, true);
+        Boolean obeyAps = XmlUtils.getOdBoolEle(appInfoEle, XmlUtils.OD_NAME_OBEY_APS, true);
+        Boolean adsFingerprinting =
+                XmlUtils.getOdBoolEle(appInfoEle, XmlUtils.OD_NAME_ADS_FINGERPRINTING, true);
+        Boolean securityFingerprinting =
+                XmlUtils.getOdBoolEle(appInfoEle, XmlUtils.OD_NAME_SECURITY_FINGERPRINTING, true);
+        String privacyPolicy =
+                XmlUtils.getOdStringEle(appInfoEle, XmlUtils.OD_NAME_PRIVACY_POLICY, true);
+        List<String> securityEndpoints =
+                XmlUtils.getOdStringArray(appInfoEle, XmlUtils.OD_NAME_SECURITY_ENDPOINT, true);
+        List<String> firstPartyEndpoints =
+                XmlUtils.getOdStringArray(appInfoEle, XmlUtils.OD_NAME_FIRST_PARTY_ENDPOINT, true);
+        List<String> serviceProviderEndpoints =
+                XmlUtils.getOdStringArray(
+                        appInfoEle, XmlUtils.OD_NAME_SERVICE_PROVIDER_ENDPOINT, true);
+        String category = XmlUtils.getOdStringEle(appInfoEle, XmlUtils.OD_NAME_CATEGORY, true);
+        String email = XmlUtils.getOdStringEle(appInfoEle, XmlUtils.OD_NAME_EMAIL, true);
+        String website = XmlUtils.getOdStringEle(appInfoEle, XmlUtils.OD_NAME_WEBSITE, false);
+
+        return new AppInfo(
+                title,
+                description,
+                containsAds,
+                obeyAps,
+                adsFingerprinting,
+                securityFingerprinting,
+                privacyPolicy,
+                securityEndpoints,
+                firstPartyEndpoints,
+                serviceProviderEndpoints,
+                category,
+                email,
+                website);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataCategory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataCategory.java
index eb975540ce70..d551953477d8 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataCategory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataCategory.java
@@ -63,6 +63,8 @@ public class DataCategory implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        throw new IllegalStateException(
+                "Turning DataCategory or DataType into human-readable DOM elements requires"
+                        + " visibility into parent elements. The logic resides in DataLabels.");
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataType.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataType.java
index 02b7189c09ba..97304cb36081 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataType.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DataType.java
@@ -163,7 +163,9 @@ public class DataType implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        throw new IllegalStateException(
+                "Turning DataCategory or DataType into human-readable DOM elements requires"
+                        + " visibility into parent elements. The logic resides in DataLabels.");
     }
 
     private static void maybeAddBoolToOdElement(
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfo.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfo.java
index efdc8d0a5f11..94fad9607880 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfo.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfo.java
@@ -143,6 +143,31 @@ public class DeveloperInfo implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element developerInfoEle = doc.createElement(XmlUtils.HR_TAG_DEVELOPER_INFO);
+        if (mName != null) {
+            developerInfoEle.setAttribute(XmlUtils.HR_ATTR_NAME, mName);
+        }
+        if (mEmail != null) {
+            developerInfoEle.setAttribute(XmlUtils.HR_ATTR_EMAIL, mEmail);
+        }
+        if (mAddress != null) {
+            developerInfoEle.setAttribute(XmlUtils.HR_ATTR_ADDRESS, mAddress);
+        }
+        if (mCountryRegion != null) {
+            developerInfoEle.setAttribute(XmlUtils.HR_ATTR_COUNTRY_REGION, mCountryRegion);
+        }
+        if (mDeveloperRelationship != null) {
+            developerInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_DEVELOPER_RELATIONSHIP, mDeveloperRelationship.toString());
+        }
+        if (mWebsite != null) {
+            developerInfoEle.setAttribute(XmlUtils.HR_ATTR_WEBSITE, mWebsite);
+        }
+        if (mAppDeveloperRegistryId != null) {
+            developerInfoEle.setAttribute(
+                    XmlUtils.HR_ATTR_APP_DEVELOPER_REGISTRY_ID, mAppDeveloperRegistryId);
+        }
+
+        return XmlUtils.listOf(developerInfoEle);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfoFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfoFactory.java
index c3e7ac35c545..0f3b41cd5d1a 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfoFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/DeveloperInfoFactory.java
@@ -34,15 +34,15 @@ public class DeveloperInfoFactory implements AslMarshallableFactory<DeveloperInf
             AslgenUtil.logI("No DeveloperInfo found in hr format.");
             return null;
         }
-        String name = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_NAME);
-        String email = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_EMAIL);
-        String address = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_ADDRESS);
+        String name = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_NAME, true);
+        String email = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_EMAIL, true);
+        String address = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_ADDRESS, true);
         String countryRegion =
-                XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_COUNTRY_REGION);
+                XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_COUNTRY_REGION, true);
         DeveloperInfo.DeveloperRelationship developerRelationship =
                 DeveloperInfo.DeveloperRelationship.forString(
                         XmlUtils.getStringAttr(
-                                developerInfoEle, XmlUtils.HR_ATTR_DEVELOPER_RELATIONSHIP));
+                                developerInfoEle, XmlUtils.HR_ATTR_DEVELOPER_RELATIONSHIP, true));
         String website = XmlUtils.getStringAttr(developerInfoEle, XmlUtils.HR_ATTR_WEBSITE, false);
         String appDeveloperRegistryId =
                 XmlUtils.getStringAttr(
@@ -61,6 +61,36 @@ public class DeveloperInfoFactory implements AslMarshallableFactory<DeveloperInf
     /** Creates an {@link AslMarshallableFactory} from on-device DOM elements */
     @Override
     public DeveloperInfo createFromOdElements(List<Element> elements) throws MalformedXmlException {
-        return null;
+        Element developerInfoEle = XmlUtils.getSingleElement(elements);
+        if (developerInfoEle == null) {
+            AslgenUtil.logI("No DeveloperInfo found in od format.");
+            return null;
+        }
+        String name = XmlUtils.getOdStringEle(developerInfoEle, XmlUtils.OD_NAME_NAME, true);
+        String email = XmlUtils.getOdStringEle(developerInfoEle, XmlUtils.OD_NAME_EMAIL, true);
+        String address = XmlUtils.getOdStringEle(developerInfoEle, XmlUtils.OD_NAME_ADDRESS, true);
+        String countryRegion =
+                XmlUtils.getOdStringEle(developerInfoEle, XmlUtils.OD_NAME_COUNTRY_REGION, true);
+        DeveloperInfo.DeveloperRelationship developerRelationship =
+                DeveloperInfo.DeveloperRelationship.forValue(
+                        (int)
+                                (long)
+                                        XmlUtils.getOdLongEle(
+                                                developerInfoEle,
+                                                XmlUtils.OD_NAME_DEVELOPER_RELATIONSHIP,
+                                                true));
+        String website = XmlUtils.getOdStringEle(developerInfoEle, XmlUtils.OD_NAME_WEBSITE, false);
+        String appDeveloperRegistryId =
+                XmlUtils.getOdStringEle(
+                        developerInfoEle, XmlUtils.OD_NAME_APP_DEVELOPER_REGISTRY_ID, false);
+
+        return new DeveloperInfo(
+                name,
+                email,
+                address,
+                countryRegion,
+                developerRelationship,
+                website,
+                appDeveloperRegistryId);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabels.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabels.java
index 576820dac6c6..6af80715f7c1 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabels.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabels.java
@@ -74,6 +74,18 @@ public class SafetyLabels implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element safetyLabelsEle = doc.createElement(XmlUtils.HR_TAG_SAFETY_LABELS);
+        safetyLabelsEle.setAttribute(XmlUtils.HR_ATTR_VERSION, String.valueOf(mVersion));
+
+        if (mDataLabels != null) {
+            XmlUtils.appendChildren(safetyLabelsEle, mDataLabels.toHrDomElements(doc));
+        }
+        if (mSecurityLabels != null) {
+            XmlUtils.appendChildren(safetyLabelsEle, mSecurityLabels.toHrDomElements(doc));
+        }
+        if (mThirdPartyVerification != null) {
+            XmlUtils.appendChildren(safetyLabelsEle, mThirdPartyVerification.toHrDomElements(doc));
+        }
+        return XmlUtils.listOf(safetyLabelsEle);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabelsFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabelsFactory.java
index 7e1838f40680..2644b435311b 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabelsFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SafetyLabelsFactory.java
@@ -66,6 +66,37 @@ public class SafetyLabelsFactory implements AslMarshallableFactory<SafetyLabels>
     /** Creates an {@link AslMarshallableFactory} from on-device DOM elements */
     @Override
     public SafetyLabels createFromOdElements(List<Element> elements) throws MalformedXmlException {
-        return null;
+        Element safetyLabelsEle = XmlUtils.getSingleElement(elements);
+        if (safetyLabelsEle == null) {
+            AslgenUtil.logI("No SafetyLabels found in od format.");
+            return null;
+        }
+        Long version = XmlUtils.getOdLongEle(safetyLabelsEle, XmlUtils.OD_NAME_VERSION, true);
+
+        DataLabels dataLabels =
+                new DataLabelsFactory()
+                        .createFromOdElements(
+                                XmlUtils.listOf(
+                                        XmlUtils.getOdPbundleWithName(
+                                                safetyLabelsEle,
+                                                XmlUtils.OD_NAME_DATA_LABELS,
+                                                false)));
+        SecurityLabels securityLabels =
+                new SecurityLabelsFactory()
+                        .createFromOdElements(
+                                XmlUtils.listOf(
+                                        XmlUtils.getOdPbundleWithName(
+                                                safetyLabelsEle,
+                                                XmlUtils.OD_NAME_SECURITY_LABELS,
+                                                false)));
+        ThirdPartyVerification thirdPartyVerification =
+                new ThirdPartyVerificationFactory()
+                        .createFromOdElements(
+                                XmlUtils.listOf(
+                                        XmlUtils.getOdPbundleWithName(
+                                                safetyLabelsEle,
+                                                XmlUtils.OD_NAME_THIRD_PARTY_VERIFICATION,
+                                                false)));
+        return new SafetyLabels(version, dataLabels, securityLabels, thirdPartyVerification);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabels.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabels.java
index 437343b14605..48643ba0e3ab 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabels.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabels.java
@@ -54,6 +54,13 @@ public class SecurityLabels implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element ele = doc.createElement(XmlUtils.HR_TAG_SECURITY_LABELS);
+        if (mIsDataDeletable != null) {
+            ele.setAttribute(XmlUtils.HR_ATTR_IS_DATA_DELETABLE, String.valueOf(mIsDataDeletable));
+        }
+        if (mIsDataEncrypted != null) {
+            ele.setAttribute(XmlUtils.HR_ATTR_IS_DATA_ENCRYPTED, String.valueOf(mIsDataEncrypted));
+        }
+        return XmlUtils.listOf(ele);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabelsFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabelsFactory.java
index 9dc4712c33b0..525a80388261 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabelsFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SecurityLabelsFactory.java
@@ -46,6 +46,15 @@ public class SecurityLabelsFactory implements AslMarshallableFactory<SecurityLab
     @Override
     public SecurityLabels createFromOdElements(List<Element> elements)
             throws MalformedXmlException {
-        return null;
+        Element ele = XmlUtils.getSingleElement(elements);
+        if (ele == null) {
+            AslgenUtil.logI("No SecurityLabels found in od format.");
+            return null;
+        }
+        Boolean isDataDeletable =
+                XmlUtils.getOdBoolEle(ele, XmlUtils.OD_NAME_IS_DATA_DELETABLE, false);
+        Boolean isDataEncrypted =
+                XmlUtils.getOdBoolEle(ele, XmlUtils.OD_NAME_IS_DATA_ENCRYPTED, false);
+        return new SecurityLabels(isDataDeletable, isDataEncrypted);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabel.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabel.java
index f0ecf93f2805..854c0d0ac3e1 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabel.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabel.java
@@ -50,6 +50,9 @@ public class SystemAppSafetyLabel implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element systemAppSafetyLabelEle =
+                doc.createElement(XmlUtils.HR_TAG_SYSTEM_APP_SAFETY_LABEL);
+        systemAppSafetyLabelEle.setAttribute(XmlUtils.HR_ATTR_URL, mUrl);
+        return XmlUtils.listOf(systemAppSafetyLabelEle);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabelFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabelFactory.java
index 5b7fe32f2735..c8e22b6c42cd 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabelFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/SystemAppSafetyLabelFactory.java
@@ -36,7 +36,7 @@ public class SystemAppSafetyLabelFactory implements AslMarshallableFactory<Syste
             return null;
         }
 
-        String url = XmlUtils.getStringAttr(systemAppSafetyLabelEle, XmlUtils.HR_ATTR_URL);
+        String url = XmlUtils.getStringAttr(systemAppSafetyLabelEle, XmlUtils.HR_ATTR_URL, true);
         return new SystemAppSafetyLabel(url);
     }
 
@@ -44,6 +44,12 @@ public class SystemAppSafetyLabelFactory implements AslMarshallableFactory<Syste
     @Override
     public SystemAppSafetyLabel createFromOdElements(List<Element> elements)
             throws MalformedXmlException {
-        return null;
+        Element systemAppSafetyLabelEle = XmlUtils.getSingleElement(elements);
+        if (systemAppSafetyLabelEle == null) {
+            AslgenUtil.logI("No SystemAppSafetyLabel found in od format.");
+            return null;
+        }
+        String url = XmlUtils.getOdStringEle(systemAppSafetyLabelEle, XmlUtils.OD_NAME_URL, true);
+        return new SystemAppSafetyLabel(url);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerification.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerification.java
index 229b00243e0a..d74f3f062513 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerification.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerification.java
@@ -44,6 +44,8 @@ public class ThirdPartyVerification implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element ele = doc.createElement(XmlUtils.HR_TAG_THIRD_PARTY_VERIFICATION);
+        ele.setAttribute(XmlUtils.HR_ATTR_URL, mUrl);
+        return XmlUtils.listOf(ele);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerificationFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerificationFactory.java
index ac4d3836bcbd..197e7aa77743 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerificationFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/ThirdPartyVerificationFactory.java
@@ -37,7 +37,7 @@ public class ThirdPartyVerificationFactory
             return null;
         }
 
-        String url = XmlUtils.getStringAttr(ele, XmlUtils.HR_ATTR_URL);
+        String url = XmlUtils.getStringAttr(ele, XmlUtils.HR_ATTR_URL, true);
         return new ThirdPartyVerification(url);
     }
 
@@ -45,6 +45,13 @@ public class ThirdPartyVerificationFactory
     @Override
     public ThirdPartyVerification createFromOdElements(List<Element> elements)
             throws MalformedXmlException {
-        return null;
+        Element ele = XmlUtils.getSingleElement(elements);
+        if (ele == null) {
+            AslgenUtil.logI("No ThirdPartyVerification found in od format.");
+            return null;
+        }
+
+        String url = XmlUtils.getOdStringEle(ele, XmlUtils.OD_NAME_URL, true);
+        return new ThirdPartyVerification(url);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfo.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfo.java
index ce7ef16ea54e..6a8700a10d3f 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfo.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfo.java
@@ -61,6 +61,13 @@ public class TransparencyInfo implements AslMarshallable {
     /** Creates the human-readable DOM elements from the AslMarshallable Java Object. */
     @Override
     public List<Element> toHrDomElements(Document doc) {
-        return List.of();
+        Element transparencyInfoEle = doc.createElement(XmlUtils.HR_TAG_TRANSPARENCY_INFO);
+        if (mDeveloperInfo != null) {
+            XmlUtils.appendChildren(transparencyInfoEle, mDeveloperInfo.toHrDomElements(doc));
+        }
+        if (mAppInfo != null) {
+            XmlUtils.appendChildren(transparencyInfoEle, mAppInfo.toHrDomElements(doc));
+        }
+        return XmlUtils.listOf(transparencyInfoEle);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfoFactory.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfoFactory.java
index 123de01e57ba..94c564087918 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfoFactory.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/marshallable/TransparencyInfoFactory.java
@@ -54,6 +54,23 @@ public class TransparencyInfoFactory implements AslMarshallableFactory<Transpare
     @Override
     public TransparencyInfo createFromOdElements(List<Element> elements)
             throws MalformedXmlException {
-        return null;
+        Element transparencyInfoEle = XmlUtils.getSingleElement(elements);
+        if (transparencyInfoEle == null) {
+            AslgenUtil.logI("No TransparencyInfo found in od format.");
+            return null;
+        }
+
+        Element developerInfoEle =
+                XmlUtils.getOdPbundleWithName(
+                        transparencyInfoEle, XmlUtils.OD_NAME_DEVELOPER_INFO, false);
+        DeveloperInfo developerInfo =
+                new DeveloperInfoFactory().createFromOdElements(XmlUtils.listOf(developerInfoEle));
+
+        Element appInfoEle =
+                XmlUtils.getOdPbundleWithName(
+                        transparencyInfoEle, XmlUtils.OD_NAME_APP_INFO, false);
+        AppInfo appInfo = new AppInfoFactory().createFromOdElements(XmlUtils.listOf(appInfoEle));
+
+        return new TransparencyInfo(developerInfo, appInfo);
     }
 }
diff --git a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/util/XmlUtils.java b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/util/XmlUtils.java
index 4f21b0c0ffad..1d54ead0a28d 100644
--- a/tools/app_metadata_bundles/src/lib/java/com/android/asllib/util/XmlUtils.java
+++ b/tools/app_metadata_bundles/src/lib/java/com/android/asllib/util/XmlUtils.java
@@ -320,6 +320,63 @@ public class XmlUtils {
         return b;
     }
 
+    /** Gets an on-device Long attribute. */
+    public static Long getOdLongEle(Element ele, String nameName, boolean required)
+            throws MalformedXmlException {
+        List<Element> longEles =
+                XmlUtils.getChildrenByTagName(ele, XmlUtils.OD_TAG_LONG).stream()
+                        .filter(e -> e.getAttribute(XmlUtils.OD_ATTR_NAME).equals(nameName))
+                        .toList();
+        if (longEles.size() > 1) {
+            throw new MalformedXmlException(
+                    String.format("Found more than one %s in %s.", nameName, ele.getTagName()));
+        }
+        if (longEles.isEmpty()) {
+            if (required) {
+                throw new MalformedXmlException(
+                        String.format("Found no %s in %s.", nameName, ele.getTagName()));
+            }
+            return null;
+        }
+        Element longEle = longEles.get(0);
+        Long l = null;
+        try {
+            l = Long.parseLong(longEle.getAttribute(XmlUtils.OD_ATTR_VALUE));
+        } catch (NumberFormatException e) {
+            throw new MalformedXmlException(
+                    String.format(
+                            "%s in %s was not formatted as long", nameName, ele.getTagName()));
+        }
+        return l;
+    }
+
+    /** Gets an on-device String attribute. */
+    public static String getOdStringEle(Element ele, String nameName, boolean required)
+            throws MalformedXmlException {
+        List<Element> eles =
+                XmlUtils.getChildrenByTagName(ele, XmlUtils.OD_TAG_STRING).stream()
+                        .filter(e -> e.getAttribute(XmlUtils.OD_ATTR_NAME).equals(nameName))
+                        .toList();
+        if (eles.size() > 1) {
+            throw new MalformedXmlException(
+                    String.format("Found more than one %s in %s.", nameName, ele.getTagName()));
+        }
+        if (eles.isEmpty()) {
+            if (required) {
+                throw new MalformedXmlException(
+                        String.format("Found no %s in %s.", nameName, ele.getTagName()));
+            }
+            return null;
+        }
+        String str = eles.get(0).getAttribute(XmlUtils.OD_ATTR_VALUE);
+        if (XmlUtils.isNullOrEmpty(str) && required) {
+            throw new MalformedXmlException(
+                    String.format(
+                            "%s in %s was empty or missing value", nameName, ele.getTagName()));
+        }
+        return str;
+    }
+
     /** Gets a OD Pbundle Element attribute with the specified name. */
     public static Element getOdPbundleWithName(Element ele, String nameName, boolean required)
             throws MalformedXmlException {
@@ -379,7 +436,7 @@ public class XmlUtils {
                 throw new MalformedXmlException(
                         String.format("Found no %s in %s.", nameName, ele.getTagName()));
             }
-            return List.of();
+            return null;
         }
         Element intArrayEle = intArrayEles.get(0);
         List<Element> itemEles = XmlUtils.getChildrenByTagName(intArrayEle, XmlUtils.OD_TAG_ITEM);
@@ -390,6 +447,33 @@ public class XmlUtils {
         return ints;
     }
 
+    /** Gets on-device style String array. */
+    public static List<String> getOdStringArray(Element ele, String nameName, boolean required)
+            throws MalformedXmlException {
+        List<Element> arrayEles =
+                XmlUtils.getChildrenByTagName(ele, XmlUtils.OD_TAG_STRING_ARRAY).stream()
+                        .filter(e -> e.getAttribute(XmlUtils.OD_ATTR_NAME).equals(nameName))
+                        .toList();
+        if (arrayEles.size() > 1) {
+            throw new MalformedXmlException(
+                    String.format("Found more than one %s in %s.", nameName, ele.getTagName()));
+        }
+        if (arrayEles.isEmpty()) {
+            if (required) {
+                throw new MalformedXmlException(
+                        String.format("Found no %s in %s.", nameName, ele.getTagName()));
+            }
+            return null;
+        }
+        Element arrayEle = arrayEles.get(0);
+        List<Element> itemEles = XmlUtils.getChildrenByTagName(arrayEle, XmlUtils.OD_TAG_ITEM);
+        List<String> strs = new ArrayList<String>();
+        for (Element itemEle : itemEles) {
+            strs.add(XmlUtils.getStringAttr(itemEle, XmlUtils.OD_ATTR_VALUE, true));
+        }
+        return strs;
+    }
+
     /**
      * Utility method for making a List from one element, to support easier refactoring if needed.
      * For example, List.of() doesn't support null elements.
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/AslgenTests.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/AslgenTests.java
index e2588d7bb3e7..d2e0fc338243 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/AslgenTests.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/AslgenTests.java
@@ -56,18 +56,35 @@ public class AslgenTests {
 
             InputStream hrStream =
                     getClass().getClassLoader().getResourceAsStream(hrPath.toString());
-            String hrContents = new String(hrStream.readAllBytes(), StandardCharsets.UTF_8);
+            String hrContents =
+                    TestUtils.getFormattedXml(
+                            new String(hrStream.readAllBytes(), StandardCharsets.UTF_8), false);
             InputStream odStream =
                     getClass().getClassLoader().getResourceAsStream(odPath.toString());
-            String odContents = new String(odStream.readAllBytes(), StandardCharsets.UTF_8);
-            AndroidSafetyLabel asl =
+            String odContents =
+                    TestUtils.getFormattedXml(
+                            new String(odStream.readAllBytes(), StandardCharsets.UTF_8), false);
+            AndroidSafetyLabel aslFromHr =
                     AslConverter.readFromString(hrContents, AslConverter.Format.HUMAN_READABLE);
-            String out = AslConverter.getXmlAsString(asl, AslConverter.Format.ON_DEVICE);
-            System.out.println("out: " + out);
+            String aslToOdStr =
+                    TestUtils.getFormattedXml(
+                            AslConverter.getXmlAsString(aslFromHr, AslConverter.Format.ON_DEVICE),
+                            false);
+            AndroidSafetyLabel aslFromOd =
+                    AslConverter.readFromString(odContents, AslConverter.Format.ON_DEVICE);
+            String aslToHrStr =
+                    TestUtils.getFormattedXml(
+                            AslConverter.getXmlAsString(
+                                    aslFromOd, AslConverter.Format.HUMAN_READABLE),
+                            false);
 
-            assertEquals(
-                    TestUtils.getFormattedXml(out, false),
-                    TestUtils.getFormattedXml(odContents, false));
+            System.out.println("od expected: " + odContents);
+            System.out.println("asl to od: " + aslToOdStr);
+            assertEquals(odContents, aslToOdStr);
+
+            System.out.println("hr expected: " + hrContents);
+            System.out.println("asl to hr: " + aslToHrStr);
+            assertEquals(hrContents, aslToHrStr);
         }
     }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AndroidSafetyLabelTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AndroidSafetyLabelTest.java
index 013700728e50..61a78232801c 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AndroidSafetyLabelTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AndroidSafetyLabelTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class AndroidSafetyLabelTest {
@@ -38,12 +37,9 @@ public class AndroidSafetyLabelTest {
             "with-system-app-safety-label.xml";
     private static final String WITH_TRANSPARENCY_INFO_FILE_NAME = "with-transparency-info.xml";
 
-    private Document mDoc = null;
-
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for android safety label missing version. */
@@ -51,6 +47,7 @@ public class AndroidSafetyLabelTest {
     public void testAndroidSafetyLabelMissingVersion() throws Exception {
         System.out.println("starting testAndroidSafetyLabelMissingVersion.");
         hrToOdExpectException(MISSING_VERSION_FILE_NAME);
+        odToHrExpectException(MISSING_VERSION_FILE_NAME);
     }
 
     /** Test for android safety label valid empty. */
@@ -58,6 +55,7 @@ public class AndroidSafetyLabelTest {
     public void testAndroidSafetyLabelValidEmptyFile() throws Exception {
         System.out.println("starting testAndroidSafetyLabelValidEmptyFile.");
         testHrToOdAndroidSafetyLabel(VALID_EMPTY_FILE_NAME);
+        testOdToHrAndroidSafetyLabel(VALID_EMPTY_FILE_NAME);
     }
 
     /** Test for android safety label with safety labels. */
@@ -65,6 +63,7 @@ public class AndroidSafetyLabelTest {
     public void testAndroidSafetyLabelWithSafetyLabels() throws Exception {
         System.out.println("starting testAndroidSafetyLabelWithSafetyLabels.");
         testHrToOdAndroidSafetyLabel(WITH_SAFETY_LABELS_FILE_NAME);
+        testOdToHrAndroidSafetyLabel(WITH_SAFETY_LABELS_FILE_NAME);
     }
 
     /** Test for android safety label with system app safety label. */
@@ -72,6 +71,7 @@ public class AndroidSafetyLabelTest {
     public void testAndroidSafetyLabelWithSystemAppSafetyLabel() throws Exception {
         System.out.println("starting testAndroidSafetyLabelWithSystemAppSafetyLabel.");
         testHrToOdAndroidSafetyLabel(WITH_SYSTEM_APP_SAFETY_LABEL_FILE_NAME);
+        testOdToHrAndroidSafetyLabel(WITH_SYSTEM_APP_SAFETY_LABEL_FILE_NAME);
     }
 
     /** Test for android safety label with transparency info. */
@@ -79,6 +79,7 @@ public class AndroidSafetyLabelTest {
     public void testAndroidSafetyLabelWithTransparencyInfo() throws Exception {
         System.out.println("starting testAndroidSafetyLabelWithTransparencyInfo.");
         testHrToOdAndroidSafetyLabel(WITH_TRANSPARENCY_INFO_FILE_NAME);
+        testOdToHrAndroidSafetyLabel(WITH_TRANSPARENCY_INFO_FILE_NAME);
     }
 
     private void hrToOdExpectException(String fileName) {
@@ -86,12 +87,26 @@ public class AndroidSafetyLabelTest {
                 new AndroidSafetyLabelFactory(), ANDROID_SAFETY_LABEL_HR_PATH, fileName);
     }
 
+    private void odToHrExpectException(String fileName) {
+        TestUtils.odToHrExpectException(
+                new AndroidSafetyLabelFactory(), ANDROID_SAFETY_LABEL_OD_PATH, fileName);
+    }
+
     private void testHrToOdAndroidSafetyLabel(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new AndroidSafetyLabelFactory(),
                 ANDROID_SAFETY_LABEL_HR_PATH,
                 ANDROID_SAFETY_LABEL_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrAndroidSafetyLabel(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new AndroidSafetyLabelFactory(),
+                ANDROID_SAFETY_LABEL_OD_PATH,
+                ANDROID_SAFETY_LABEL_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AppInfoTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AppInfoTest.java
index a015e2eacac5..9e91c6f22641 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AppInfoTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/AppInfoTest.java
@@ -25,7 +25,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 import java.nio.file.Paths;
 import java.util.List;
@@ -48,19 +47,31 @@ public class AppInfoTest {
                     "serviceProviderEndpoints",
                     "category",
                     "email");
+    public static final List<String> REQUIRED_FIELD_NAMES_OD =
+            List.of(
+                    "title",
+                    "description",
+                    "contains_ads",
+                    "obey_aps",
+                    "ads_fingerprinting",
+                    "security_fingerprinting",
+                    "privacy_policy",
+                    "security_endpoint",
+                    "first_party_endpoint",
+                    "service_provider_endpoint",
+                    "category",
+                    "email");
     public static final List<String> OPTIONAL_FIELD_NAMES = List.of("website");
+    public static final List<String> OPTIONAL_FIELD_NAMES_OD = List.of("website");
 
     private static final String ALL_FIELDS_VALID_FILE_NAME = "all-fields-valid.xml";
 
-    private Document mDoc = null;
-
     /** Logic for setting up tests (empty if not yet needed). */
     public static void main(String[] params) throws Exception {}
 
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for all fields valid. */
@@ -68,6 +79,7 @@ public class AppInfoTest {
     public void testAllFieldsValid() throws Exception {
         System.out.println("starting testAllFieldsValid.");
         testHrToOdAppInfo(ALL_FIELDS_VALID_FILE_NAME);
+        testOdToHrAppInfo(ALL_FIELDS_VALID_FILE_NAME);
     }
 
     /** Tests missing required fields fails. */
@@ -75,7 +87,7 @@ public class AppInfoTest {
     public void testMissingRequiredFields() throws Exception {
         System.out.println("Starting testMissingRequiredFields");
         for (String reqField : REQUIRED_FIELD_NAMES) {
-            System.out.println("testing missing required field: " + reqField);
+            System.out.println("testing missing required field hr: " + reqField);
             var appInfoEle =
                     TestUtils.getElementsFromResource(
                             Paths.get(APP_INFO_HR_PATH, ALL_FIELDS_VALID_FILE_NAME));
@@ -85,6 +97,17 @@ public class AppInfoTest {
                     MalformedXmlException.class,
                     () -> new AppInfoFactory().createFromHrElements(appInfoEle));
         }
+
+        for (String reqField : REQUIRED_FIELD_NAMES_OD) {
+            System.out.println("testing missing required field od: " + reqField);
+            var appInfoEle =
+                    TestUtils.getElementsFromResource(
+                            Paths.get(APP_INFO_OD_PATH, ALL_FIELDS_VALID_FILE_NAME));
+            TestUtils.removeOdChildEleWithName(appInfoEle.get(0), reqField);
+            assertThrows(
+                    MalformedXmlException.class,
+                    () -> new AppInfoFactory().createFromOdElements(appInfoEle));
+        }
     }
 
     /** Tests missing optional fields passes. */
@@ -96,12 +119,34 @@ public class AppInfoTest {
                             Paths.get(APP_INFO_HR_PATH, ALL_FIELDS_VALID_FILE_NAME));
             ele.get(0).removeAttribute(optField);
             AppInfo appInfo = new AppInfoFactory().createFromHrElements(ele);
-            appInfo.toOdDomElements(mDoc);
+            appInfo.toOdDomElements(TestUtils.document());
+        }
+
+        for (String optField : OPTIONAL_FIELD_NAMES_OD) {
+            var ele =
+                    TestUtils.getElementsFromResource(
+                            Paths.get(APP_INFO_OD_PATH, ALL_FIELDS_VALID_FILE_NAME));
+            TestUtils.removeOdChildEleWithName(ele.get(0), optField);
+            AppInfo appInfo = new AppInfoFactory().createFromOdElements(ele);
+            appInfo.toHrDomElements(TestUtils.document());
         }
     }
 
     private void testHrToOdAppInfo(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc, new AppInfoFactory(), APP_INFO_HR_PATH, APP_INFO_OD_PATH, fileName);
+                TestUtils.document(),
+                new AppInfoFactory(),
+                APP_INFO_HR_PATH,
+                APP_INFO_OD_PATH,
+                fileName);
+    }
+
+    private void testOdToHrAppInfo(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new AppInfoFactory(),
+                APP_INFO_OD_PATH,
+                APP_INFO_HR_PATH,
+                fileName);
     }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataCategoryTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataCategoryTest.java
index 822f1753f662..ebb31865843f 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataCategoryTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataCategoryTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class DataCategoryTest {
@@ -57,15 +56,12 @@ public class DataCategoryTest {
             "data-category-personal-unrecognized-type.xml";
     private static final String UNRECOGNIZED_CATEGORY_FILE_NAME = "data-category-unrecognized.xml";
 
-    private Document mDoc = null;
-
     /** Logic for setting up tests (empty if not yet needed). */
     public static void main(String[] params) throws Exception {}
 
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for data category personal. */
@@ -207,7 +203,7 @@ public class DataCategoryTest {
 
     private void testHrToOdDataCategory(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new DataCategoryFactory(),
                 DATA_CATEGORY_HR_PATH,
                 DATA_CATEGORY_OD_PATH,
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataLabelsTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataLabelsTest.java
index 6f6f2545a5d2..26617264b2e9 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataLabelsTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DataLabelsTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class DataLabelsTest {
@@ -65,12 +64,9 @@ public class DataLabelsTest {
     private static final String UNRECOGNIZED_FILE_NAME = "data-category-unrecognized.xml";
     private static final String UNRECOGNIZED_TYPE_FILE_NAME = "data-category-unrecognized-type.xml";
 
-    private Document mDoc = null;
-
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for data labels accessed valid bool. */
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DeveloperInfoTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DeveloperInfoTest.java
index ff8346a526ad..72e8d654b542 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DeveloperInfoTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/DeveloperInfoTest.java
@@ -25,7 +25,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 import java.nio.file.Paths;
 import java.util.List;
@@ -36,19 +35,20 @@ public class DeveloperInfoTest {
     private static final String DEVELOPER_INFO_OD_PATH = "com/android/asllib/developerinfo/od";
     public static final List<String> REQUIRED_FIELD_NAMES =
             List.of("address", "countryRegion", "email", "name", "relationship");
+    public static final List<String> REQUIRED_FIELD_NAMES_OD =
+            List.of("address", "country_region", "email", "name", "relationship");
     public static final List<String> OPTIONAL_FIELD_NAMES = List.of("website", "registryId");
+    public static final List<String> OPTIONAL_FIELD_NAMES_OD =
+            List.of("website", "app_developer_registry_id");
 
     private static final String ALL_FIELDS_VALID_FILE_NAME = "all-fields-valid.xml";
 
-    private Document mDoc = null;
-
     /** Logic for setting up tests (empty if not yet needed). */
     public static void main(String[] params) throws Exception {}
 
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for all fields valid. */
@@ -56,6 +56,7 @@ public class DeveloperInfoTest {
     public void testAllFieldsValid() throws Exception {
         System.out.println("starting testAllFieldsValid.");
         testHrToOdDeveloperInfo(ALL_FIELDS_VALID_FILE_NAME);
+        testOdToHrDeveloperInfo(ALL_FIELDS_VALID_FILE_NAME);
     }
 
     /** Tests missing required fields fails. */
@@ -73,6 +74,18 @@ public class DeveloperInfoTest {
                     MalformedXmlException.class,
                     () -> new DeveloperInfoFactory().createFromHrElements(developerInfoEle));
         }
+
+        for (String reqField : REQUIRED_FIELD_NAMES_OD) {
+            System.out.println("testing missing required field od: " + reqField);
+            var developerInfoEle =
+                    TestUtils.getElementsFromResource(
+                            Paths.get(DEVELOPER_INFO_OD_PATH, ALL_FIELDS_VALID_FILE_NAME));
+            TestUtils.removeOdChildEleWithName(developerInfoEle.get(0), reqField);
+
+            assertThrows(
+                    MalformedXmlException.class,
+                    () -> new DeveloperInfoFactory().createFromOdElements(developerInfoEle));
+        }
     }
 
     /** Tests missing optional fields passes. */
@@ -85,16 +98,35 @@ public class DeveloperInfoTest {
             developerInfoEle.get(0).removeAttribute(optField);
             DeveloperInfo developerInfo =
                     new DeveloperInfoFactory().createFromHrElements(developerInfoEle);
-            developerInfo.toOdDomElements(mDoc);
+            developerInfo.toOdDomElements(TestUtils.document());
+        }
+
+        for (String optField : OPTIONAL_FIELD_NAMES_OD) {
+            var developerInfoEle =
+                    TestUtils.getElementsFromResource(
+                            Paths.get(DEVELOPER_INFO_OD_PATH, ALL_FIELDS_VALID_FILE_NAME));
+            TestUtils.removeOdChildEleWithName(developerInfoEle.get(0), optField);
+            DeveloperInfo developerInfo =
+                    new DeveloperInfoFactory().createFromOdElements(developerInfoEle);
+            developerInfo.toHrDomElements(TestUtils.document());
         }
     }
 
     private void testHrToOdDeveloperInfo(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new DeveloperInfoFactory(),
                 DEVELOPER_INFO_HR_PATH,
                 DEVELOPER_INFO_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrDeveloperInfo(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new DeveloperInfoFactory(),
+                DEVELOPER_INFO_OD_PATH,
+                DEVELOPER_INFO_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SafetyLabelsTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SafetyLabelsTest.java
index c52d6c873646..bba6b548beaf 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SafetyLabelsTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SafetyLabelsTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class SafetyLabelsTest {
@@ -36,12 +35,9 @@ public class SafetyLabelsTest {
     private static final String WITH_THIRD_PARTY_VERIFICATION_FILE_NAME =
             "with-third-party-verification.xml";
 
-    private Document mDoc = null;
-
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for safety labels missing version. */
@@ -49,6 +45,7 @@ public class SafetyLabelsTest {
     public void testSafetyLabelsMissingVersion() throws Exception {
         System.out.println("starting testSafetyLabelsMissingVersion.");
         hrToOdExpectException(MISSING_VERSION_FILE_NAME);
+        odToHrExpectException(MISSING_VERSION_FILE_NAME);
     }
 
     /** Test for safety labels valid empty. */
@@ -56,6 +53,7 @@ public class SafetyLabelsTest {
     public void testSafetyLabelsValidEmptyFile() throws Exception {
         System.out.println("starting testSafetyLabelsValidEmptyFile.");
         testHrToOdSafetyLabels(VALID_EMPTY_FILE_NAME);
+        testOdToHrSafetyLabels(VALID_EMPTY_FILE_NAME);
     }
 
     /** Test for safety labels with data labels. */
@@ -63,6 +61,7 @@ public class SafetyLabelsTest {
     public void testSafetyLabelsWithDataLabels() throws Exception {
         System.out.println("starting testSafetyLabelsWithDataLabels.");
         testHrToOdSafetyLabels(WITH_DATA_LABELS_FILE_NAME);
+        testOdToHrSafetyLabels(WITH_DATA_LABELS_FILE_NAME);
     }
 
     /** Test for safety labels with security labels. */
@@ -70,6 +69,7 @@ public class SafetyLabelsTest {
     public void testSafetyLabelsWithSecurityLabels() throws Exception {
         System.out.println("starting testSafetyLabelsWithSecurityLabels.");
         testHrToOdSafetyLabels(WITH_SECURITY_LABELS_FILE_NAME);
+        testOdToHrSafetyLabels(WITH_SECURITY_LABELS_FILE_NAME);
     }
 
     /** Test for safety labels with third party verification. */
@@ -77,18 +77,32 @@ public class SafetyLabelsTest {
     public void testSafetyLabelsWithThirdPartyVerification() throws Exception {
         System.out.println("starting testSafetyLabelsWithThirdPartyVerification.");
         testHrToOdSafetyLabels(WITH_THIRD_PARTY_VERIFICATION_FILE_NAME);
+        testOdToHrSafetyLabels(WITH_THIRD_PARTY_VERIFICATION_FILE_NAME);
     }
 
     private void hrToOdExpectException(String fileName) {
         TestUtils.hrToOdExpectException(new SafetyLabelsFactory(), SAFETY_LABELS_HR_PATH, fileName);
     }
 
+    private void odToHrExpectException(String fileName) {
+        TestUtils.odToHrExpectException(new SafetyLabelsFactory(), SAFETY_LABELS_OD_PATH, fileName);
+    }
+
     private void testHrToOdSafetyLabels(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new SafetyLabelsFactory(),
                 SAFETY_LABELS_HR_PATH,
                 SAFETY_LABELS_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrSafetyLabels(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new SafetyLabelsFactory(),
+                SAFETY_LABELS_OD_PATH,
+                SAFETY_LABELS_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SecurityLabelsTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SecurityLabelsTest.java
index c0d0d728f762..a940bc63c685 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SecurityLabelsTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SecurityLabelsTest.java
@@ -23,7 +23,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 import java.nio.file.Paths;
 import java.util.List;
@@ -35,18 +34,17 @@ public class SecurityLabelsTest {
 
     public static final List<String> OPTIONAL_FIELD_NAMES =
             List.of("isDataDeletable", "isDataEncrypted");
+    public static final List<String> OPTIONAL_FIELD_NAMES_OD =
+            List.of("is_data_deletable", "is_data_encrypted");
 
     private static final String ALL_FIELDS_VALID_FILE_NAME = "all-fields-valid.xml";
 
-    private Document mDoc = null;
-
     /** Logic for setting up tests (empty if not yet needed). */
     public static void main(String[] params) throws Exception {}
 
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for all fields valid. */
@@ -54,6 +52,7 @@ public class SecurityLabelsTest {
     public void testAllFieldsValid() throws Exception {
         System.out.println("starting testAllFieldsValid.");
         testHrToOdSecurityLabels(ALL_FIELDS_VALID_FILE_NAME);
+        testOdToHrSecurityLabels(ALL_FIELDS_VALID_FILE_NAME);
     }
 
     /** Tests missing optional fields passes. */
@@ -65,16 +64,33 @@ public class SecurityLabelsTest {
                             Paths.get(SECURITY_LABELS_HR_PATH, ALL_FIELDS_VALID_FILE_NAME));
             ele.get(0).removeAttribute(optField);
             SecurityLabels securityLabels = new SecurityLabelsFactory().createFromHrElements(ele);
-            securityLabels.toOdDomElements(mDoc);
+            securityLabels.toOdDomElements(TestUtils.document());
+        }
+        for (String optField : OPTIONAL_FIELD_NAMES_OD) {
+            var ele =
+                    TestUtils.getElementsFromResource(
+                            Paths.get(SECURITY_LABELS_OD_PATH, ALL_FIELDS_VALID_FILE_NAME));
+            TestUtils.removeOdChildEleWithName(ele.get(0), optField);
+            SecurityLabels securityLabels = new SecurityLabelsFactory().createFromOdElements(ele);
+            securityLabels.toHrDomElements(TestUtils.document());
         }
     }
 
     private void testHrToOdSecurityLabels(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new SecurityLabelsFactory(),
                 SECURITY_LABELS_HR_PATH,
                 SECURITY_LABELS_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrSecurityLabels(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new SecurityLabelsFactory(),
+                SECURITY_LABELS_OD_PATH,
+                SECURITY_LABELS_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SystemAppSafetyLabelTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SystemAppSafetyLabelTest.java
index 191091a9e187..33c276487c64 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SystemAppSafetyLabelTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/SystemAppSafetyLabelTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class SystemAppSafetyLabelTest {
@@ -34,15 +33,12 @@ public class SystemAppSafetyLabelTest {
     private static final String VALID_FILE_NAME = "valid.xml";
     private static final String MISSING_URL_FILE_NAME = "missing-url.xml";
 
-    private Document mDoc = null;
-
     /** Logic for setting up tests (empty if not yet needed). */
     public static void main(String[] params) throws Exception {}
 
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for valid. */
@@ -50,6 +46,7 @@ public class SystemAppSafetyLabelTest {
     public void testValid() throws Exception {
         System.out.println("starting testValid.");
         testHrToOdSystemAppSafetyLabel(VALID_FILE_NAME);
+        testOdToHrSystemAppSafetyLabel(VALID_FILE_NAME);
     }
 
     /** Tests missing url. */
@@ -57,6 +54,7 @@ public class SystemAppSafetyLabelTest {
     public void testMissingUrl() throws Exception {
         System.out.println("starting testMissingUrl.");
         hrToOdExpectException(MISSING_URL_FILE_NAME);
+        odToHrExpectException(MISSING_URL_FILE_NAME);
     }
 
     private void hrToOdExpectException(String fileName) {
@@ -64,12 +62,26 @@ public class SystemAppSafetyLabelTest {
                 new SystemAppSafetyLabelFactory(), SYSTEM_APP_SAFETY_LABEL_HR_PATH, fileName);
     }
 
+    private void odToHrExpectException(String fileName) {
+        TestUtils.odToHrExpectException(
+                new SystemAppSafetyLabelFactory(), SYSTEM_APP_SAFETY_LABEL_OD_PATH, fileName);
+    }
+
     private void testHrToOdSystemAppSafetyLabel(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new SystemAppSafetyLabelFactory(),
                 SYSTEM_APP_SAFETY_LABEL_HR_PATH,
                 SYSTEM_APP_SAFETY_LABEL_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrSystemAppSafetyLabel(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new SystemAppSafetyLabelFactory(),
+                SYSTEM_APP_SAFETY_LABEL_OD_PATH,
+                SYSTEM_APP_SAFETY_LABEL_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/ThirdPartyVerificationTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/ThirdPartyVerificationTest.java
index ab8e85cd022b..ec86d0f863af 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/ThirdPartyVerificationTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/ThirdPartyVerificationTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class ThirdPartyVerificationTest {
@@ -34,15 +33,12 @@ public class ThirdPartyVerificationTest {
     private static final String VALID_FILE_NAME = "valid.xml";
     private static final String MISSING_URL_FILE_NAME = "missing-url.xml";
 
-    private Document mDoc = null;
-
     /** Logic for setting up tests (empty if not yet needed). */
     public static void main(String[] params) throws Exception {}
 
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for valid. */
@@ -50,6 +46,7 @@ public class ThirdPartyVerificationTest {
     public void testValid() throws Exception {
         System.out.println("starting testValid.");
         testHrToOdThirdPartyVerification(VALID_FILE_NAME);
+        testOdToHrThirdPartyVerification(VALID_FILE_NAME);
     }
 
     /** Tests missing url. */
@@ -57,6 +54,7 @@ public class ThirdPartyVerificationTest {
     public void testMissingUrl() throws Exception {
         System.out.println("starting testMissingUrl.");
         hrToOdExpectException(MISSING_URL_FILE_NAME);
+        odToHrExpectException(MISSING_URL_FILE_NAME);
     }
 
     private void hrToOdExpectException(String fileName) {
@@ -64,12 +62,26 @@ public class ThirdPartyVerificationTest {
                 new ThirdPartyVerificationFactory(), THIRD_PARTY_VERIFICATION_HR_PATH, fileName);
     }
 
+    private void odToHrExpectException(String fileName) {
+        TestUtils.odToHrExpectException(
+                new ThirdPartyVerificationFactory(), THIRD_PARTY_VERIFICATION_OD_PATH, fileName);
+    }
+
     private void testHrToOdThirdPartyVerification(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new ThirdPartyVerificationFactory(),
                 THIRD_PARTY_VERIFICATION_HR_PATH,
                 THIRD_PARTY_VERIFICATION_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrThirdPartyVerification(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new ThirdPartyVerificationFactory(),
+                THIRD_PARTY_VERIFICATION_OD_PATH,
+                THIRD_PARTY_VERIFICATION_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/TransparencyInfoTest.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/TransparencyInfoTest.java
index 56503f7d6c6b..f49424061427 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/TransparencyInfoTest.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/marshallable/TransparencyInfoTest.java
@@ -22,7 +22,6 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
-import org.w3c.dom.Document;
 
 @RunWith(JUnit4.class)
 public class TransparencyInfoTest {
@@ -35,12 +34,9 @@ public class TransparencyInfoTest {
     private static final String WITH_DEVELOPER_INFO_FILE_NAME = "with-developer-info.xml";
     private static final String WITH_APP_INFO_FILE_NAME = "with-app-info.xml";
 
-    private Document mDoc = null;
-
     @Before
     public void setUp() throws Exception {
         System.out.println("set up.");
-        mDoc = TestUtils.document();
     }
 
     /** Test for transparency info valid empty. */
@@ -48,6 +44,7 @@ public class TransparencyInfoTest {
     public void testTransparencyInfoValidEmptyFile() throws Exception {
         System.out.println("starting testTransparencyInfoValidEmptyFile.");
         testHrToOdTransparencyInfo(VALID_EMPTY_FILE_NAME);
+        testOdToHrTransparencyInfo(VALID_EMPTY_FILE_NAME);
     }
 
     /** Test for transparency info with developer info. */
@@ -55,6 +52,7 @@ public class TransparencyInfoTest {
     public void testTransparencyInfoWithDeveloperInfo() throws Exception {
         System.out.println("starting testTransparencyInfoWithDeveloperInfo.");
         testHrToOdTransparencyInfo(WITH_DEVELOPER_INFO_FILE_NAME);
+        testOdToHrTransparencyInfo(WITH_DEVELOPER_INFO_FILE_NAME);
     }
 
     /** Test for transparency info with app info. */
@@ -62,14 +60,24 @@ public class TransparencyInfoTest {
     public void testTransparencyInfoWithAppInfo() throws Exception {
         System.out.println("starting testTransparencyInfoWithAppInfo.");
         testHrToOdTransparencyInfo(WITH_APP_INFO_FILE_NAME);
+        testOdToHrTransparencyInfo(WITH_APP_INFO_FILE_NAME);
     }
 
     private void testHrToOdTransparencyInfo(String fileName) throws Exception {
         TestUtils.testHrToOd(
-                mDoc,
+                TestUtils.document(),
                 new TransparencyInfoFactory(),
                 TRANSPARENCY_INFO_HR_PATH,
                 TRANSPARENCY_INFO_OD_PATH,
                 fileName);
     }
+
+    private void testOdToHrTransparencyInfo(String fileName) throws Exception {
+        TestUtils.testOdToHr(
+                TestUtils.document(),
+                new TransparencyInfoFactory(),
+                TRANSPARENCY_INFO_OD_PATH,
+                TRANSPARENCY_INFO_HR_PATH,
+                fileName);
+    }
 }
diff --git a/tools/app_metadata_bundles/src/test/java/com/android/asllib/testutils/TestUtils.java b/tools/app_metadata_bundles/src/test/java/com/android/asllib/testutils/TestUtils.java
index 6a29b869be43..ea90993e0785 100644
--- a/tools/app_metadata_bundles/src/test/java/com/android/asllib/testutils/TestUtils.java
+++ b/tools/app_metadata_bundles/src/test/java/com/android/asllib/testutils/TestUtils.java
@@ -38,6 +38,7 @@ import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.List;
+import java.util.Optional;
 
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
@@ -98,6 +99,19 @@ public class TestUtils {
         return outStream.toString(StandardCharsets.UTF_8);
     }
 
+    /** Removes on-device style child with the corresponding name */
+    public static void removeOdChildEleWithName(Element ele, String childNameName) {
+        Optional<Element> childEle =
+                XmlUtils.asElementList(ele.getChildNodes()).stream()
+                        .filter(e -> e.getAttribute(XmlUtils.OD_ATTR_NAME).equals(childNameName))
+                        .findFirst();
+        if (childEle.isEmpty()) {
+            throw new IllegalStateException(
+                    String.format("%s was not found in %s", childNameName, ele.getTagName()));
+        }
+        ele.removeChild(childEle.get());
+    }
+
     /**
      * Gets formatted XML for slightly more robust comparison checking than naive string comparison.
      */
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/androidsafetylabel/od/missing-version.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/androidsafetylabel/od/missing-version.xml
new file mode 100644
index 000000000000..1aa3aa94ca6d
--- /dev/null
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/androidsafetylabel/od/missing-version.xml
@@ -0,0 +1,2 @@
+<bundle>
+</bundle>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/safetylabels/od/missing-version.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/safetylabels/od/missing-version.xml
new file mode 100644
index 000000000000..3fbe3599cd82
--- /dev/null
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/safetylabels/od/missing-version.xml
@@ -0,0 +1,2 @@
+<pbundle_as_map name="safety_labels">
+</pbundle_as_map>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/systemappsafetylabel/od/missing-url.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/systemappsafetylabel/od/missing-url.xml
new file mode 100644
index 000000000000..33b796552463
--- /dev/null
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/systemappsafetylabel/od/missing-url.xml
@@ -0,0 +1,2 @@
+<pbundle_as_map name="system_app_safety_label">
+</pbundle_as_map>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/thirdpartyverification/od/missing-url.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/thirdpartyverification/od/missing-url.xml
new file mode 100644
index 000000000000..0b5a46f904e4
--- /dev/null
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/thirdpartyverification/od/missing-url.xml
@@ -0,0 +1,2 @@
+<pbundle_as_map name="third_party_verification">
+</pbundle_as_map>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/hr/with-developer-info.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/hr/with-developer-info.xml
index 862bda465b25..d16caaea320f 100644
--- a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/hr/with-developer-info.xml
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/hr/with-developer-info.xml
@@ -7,5 +7,5 @@
         countryRegion="US"
         relationship="aosp"
         website="example.com"
-        appDeveloperRegistryId="registry_id" />
+        registryId="registry_id" />
 </transparency-info>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/od/with-developer-info.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/od/with-developer-info.xml
index 101c98bd8e60..d7a4e1a959b7 100644
--- a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/od/with-developer-info.xml
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/transparencyinfo/od/with-developer-info.xml
@@ -7,5 +7,6 @@
         <string name="country_region" value="US"/>
         <long name="relationship" value="5"/>
         <string name="website" value="example.com"/>
+        <string name="app_developer_registry_id" value="registry_id"/>
     </pbundle_as_map>
 </pbundle_as_map>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/hr.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/hr.xml
index 36beb93319cd..8f854ad1107e 100644
--- a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/hr.xml
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/hr.xml
@@ -1,6 +1,4 @@
 <app-metadata-bundles version="123">
-    <system-app-safety-label url="www.example.com">
-    </system-app-safety-label>
     <safety-labels version="12345">
         <data-labels>
             <data-shared dataCategory="location"
@@ -21,6 +19,8 @@
         <third-party-verification url="www.example.com">
         </third-party-verification>
     </safety-labels>
+    <system-app-safety-label url="www.example.com">
+    </system-app-safety-label>
     <transparency-info>
         <developer-info
             name="max"
@@ -29,7 +29,7 @@
             countryRegion="US"
             relationship="aosp"
             website="example.com"
-            appDeveloperRegistryId="registry_id" />
+            registryId="registry_id" />
         <app-info title="beervision" description="a beer app" containsAds="true" obeyAps="false" adsFingerprinting="false" securityFingerprinting="false" privacyPolicy="www.example.com" securityEndpoints="url1|url2|url3" firstPartyEndpoints="url1" serviceProviderEndpoints="url55|url56" category="Food and drink" email="max@maxloh.com" />
     </transparency-info>
 </app-metadata-bundles>
\ No newline at end of file
diff --git a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/od.xml b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/od.xml
index db21280ad61b..8f1dc6475b78 100644
--- a/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/od.xml
+++ b/tools/app_metadata_bundles/src/test/resources/com/android/asllib/validmappings/general/od.xml
@@ -42,6 +42,7 @@
             <string name="country_region" value="US"/>
             <long name="relationship" value="5"/>
             <string name="website" value="example.com"/>
+            <string name="app_developer_registry_id" value="registry_id"/>
         </pbundle_as_map>
         <pbundle_as_map name="app_info">
             <string name="title" value="beervision"/>
-- 
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