Don't depend on annotation processors XmlWriter.

The annotation processor is being modified to produce an intermediate
output that will then be processed to produce the config that ends up on
device. As such, using XmlWriter in frameworks test code no longer makes
sense.

Instead, hard-code XML config in the test to break this problematic
dependency.

Test: atest CompatConfigTest
Change-Id: I371ba32bd83d6a84de94d594169dbb5c63f3d9be

services/tests/servicestests/Android.bp

@@ -40,7 +40,6 @@ android_test {
         "platformprotosnano",
         "hamcrest-library",
         "servicestests-utils",
-        "xml-writer-device-lib",
         "service-appsearch",
         "service-jobscheduler",
     ],

services/tests/servicestests/src/com/android/server/compat/CompatConfigTest.java

@@ -22,15 +22,13 @@ import android.content.pm.ApplicationInfo;
 
 import androidx.test.runner.AndroidJUnit4;
 
-import com.android.compat.annotation.Change;
-import com.android.compat.annotation.XmlWriter;
-
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.util.UUID;
 
 @RunWith(AndroidJUnit4.class)
@@ -50,18 +48,10 @@ public class CompatConfigTest {
         return dir;
     }
 
-    private void writeChangesToFile(Change[] changes, File f) {
-        XmlWriter writer = new XmlWriter();
-        for (Change change: changes) {
-            writer.addChange(change);
-        }
-        try {
-            f.createNewFile();
-            writer.write(new FileOutputStream(f));
-        } catch (IOException e) {
-            throw new RuntimeException(
-                    "Encountered an error while writing compat config file", e);
-        }
+    private void writeToFile(File dir, String filename, String content) throws IOException {
+        OutputStream os = new FileOutputStream(new File(dir, filename));
+        os.write(content.getBytes());
+        os.close();
     }
 
     @Test
@@ -173,13 +163,15 @@ public class CompatConfigTest {
     }
 
     @Test
-    public void testReadConfig() {
-        Change[] changes = {new Change(1234L, "MY_CHANGE1", false, 2, null), new Change(1235L,
-                "MY_CHANGE2", true, null, "description"), new Change(1236L, "MY_CHANGE3", false,
-                null, "")};
+    public void testReadConfig() throws IOException {
+        String configXml = "<config>"
+                + "<compat-change id=\"1234\" name=\"MY_CHANGE1\" enableAfterTargetSdk=\"2\" />"
+                + "<compat-change id=\"1235\" name=\"MY_CHANGE2\" disabled=\"true\" />"
+                + "<compat-change id=\"1236\" name=\"MY_CHANGE3\" />"
+                + "</config>";
 
         File dir = createTempDir();
-        writeChangesToFile(changes, new File(dir.getPath() + "/platform_compat_config.xml"));
+        writeToFile(dir, "platform_compat_config.xml", configXml);
 
         CompatConfig pc = new CompatConfig();
         pc.initConfigFromLib(dir);
@@ -191,17 +183,18 @@ public class CompatConfigTest {
     }
 
     @Test
-    public void testReadConfigMultipleFiles() {
-        Change[] changes1 = {new Change(1234L, "MY_CHANGE1", false, 2, null)};
-        Change[] changes2 = {new Change(1235L, "MY_CHANGE2", true, null, ""), new Change(1236L,
-                "MY_CHANGE3", false, null, null)};
+    public void testReadConfigMultipleFiles() throws IOException {
+        String configXml1 = "<config>"
+                + "<compat-change id=\"1234\" name=\"MY_CHANGE1\" enableAfterTargetSdk=\"2\" />"
+                + "</config>";
+        String configXml2 = "<config>"
+                + "<compat-change id=\"1235\" name=\"MY_CHANGE2\" disabled=\"true\" />"
+                + "<compat-change id=\"1236\" name=\"MY_CHANGE3\" />"
+                + "</config>";
 
         File dir = createTempDir();
-        writeChangesToFile(changes1,
-                new File(dir.getPath() + "/libcore_platform_compat_config.xml"));
-        writeChangesToFile(changes2,
-                new File(dir.getPath() + "/frameworks_platform_compat_config.xml"));
-
+        writeToFile(dir, "libcore_platform_compat_config.xml", configXml1);
+        writeToFile(dir, "frameworks_platform_compat_config.xml", configXml2);
 
         CompatConfig pc = new CompatConfig();
         pc.initConfigFromLib(dir);