As test authors onboard their bivalent tests, they'll be using the
`@IgnoreUnderRavenwood` annotation to quietly ignore tests that
don't currently have enough Ravenwood support to run.

However, over time the Ravenwood environment will continue to
gain new functionality, and we'd like an easy way to "probe" those
previously-ignored tests to see if any of them started passing.

This change implements this using a locally-configured flag
that unconditionally runs all tests under Ravenwood, and reports
failures for any tests marked as `@IgnoreUnderRavenwood` that
are now passing.  (As these "failures" might be confusing for normal
test authors, we leave it disabled by default in the build, and
leave it for internal Ravenwood maintainers.)

To confirm this works, implement two new methods on Parcel, and
detect the relevant tests that started passing.

Bug: 292141694
Test: atest CtsUtilTestCasesRavenwood CtsUtilTestCases
Change-Id: Ied2a5e3d1781c76a4f3506192d015309f2f424b2

Bug: 314797745
Test: atest PowerStatsTestsRavenwood
Test: atest PowerStatsTests

Change-Id: I28f823608041cc7606bd848f3618c9c0ae5adace

Since feature flags are becoming an important part of development
work, ensure that Ravenwood tests can use existing tools such as
`SetFlagsRule` to populate values for code-under-test to consume.

To enable this, we extend `AndroidHeuristicsFilter` to recognize
feature flags generated code, and include that in the Ravenwood
environment by default.

Bug: 311370221
Test: atest FrameworksCoreTestsRavenwood FrameworksCoreTests
Change-Id: I526af65f816d153cb6e365cf6810a5a304d3e6a6

Tests for these internal utils are local within the frameworks/base/
repo, instead of in CTS.

To help future-proof, bring the entire utils/* test directory by
default into the Ravenwood suites, and give developers the way to
easily opt-out with @IgnoreUnderRavenwood at the class level.

Bug: 292141694
Test: atest FrameworksCoreTestsRavenwood FrameworksCoreTests
Test: atest FrameworksUtilTestsRavenwood FrameworksUtilTests
Change-Id: I5251dca752396faa77774659d0923d8cdb719830

frameworks/base/tools/aapt2/link/ManifestFixer.cpp:341:23: error: unused variable 'attr' [-Werror,-Wunused-variable]
  341 |   if (xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "glEsVersion")) {
      |                       ^~~~

Test: presubmit
Change-Id: Icec4737a5f8076173a2aff54532a79fa123df326

Bug: 292141694
Test: ./scripts/run-all-tests.sh
Change-Id: If16c9abaeeefbf68acac0f90d8ef394871ce542a

Bug: 292141694
Test: ./scripts/run-all-tests.sh
Change-Id: I9b1db65d9c0cdac1012637d60a3bc6c3bbe3f5d6

Bug: 292141694
Test: Tree hugger
Change-Id: Ica5cfff6bc209376ab39f665d48f992c143c49a2

Now we inject 5 annotations:
HostStubGenKeptInImpl
HostStubGenKeptInStub

HostStubGenProcessedAsIgnore
HostStubGenProcessedAsSubstitute
HostStubGenProcessedAsThrow

Bug: 311174191
Test: ./scripts/run-all-tests.sh
Change-Id: I9bf399bfdb789bc95be77fe51cd1579358e2dcee

If there's a nested class like A$B$C and C doesn't have a class-wide
policy, HSG was supposed to look at A$B's ("direct outer class") policy,
but it was using A's policy. Fixed it.

Bug: 311174191
Test: ./scripts/run-all-tests.sh
Test: atest --host CtsGraphicsTestCasesRavenwood \
    CtsTextTestCasesRavenwood \
    CtsOsTestCasesRavenwood \
    CtsAccountManagerTestCasesRavenwood \
    CtsContentTestCasesRavenwood \
    CtsProtoTestCasesRavenwood \
    CtsUtilTestCasesRavenwood \
    CtsDatabaseTestCasesRavenwood
Change-Id: I4881caac5e91366cf60e1aa232ecaf6b7c88aecf

This reverts commit 917043bc.

Reason for revert: Roll forward with fix

Test: Automatic
Bug: 296324826
Change-Id: I42a0b48c02fd497b2174c0c65f300265202f7ab1

Guava has classes outside of com.google.comm.

Bug: 311174191
Test: ./scripts/run-all-tests.sh
Change-Id: I9ccd79e8a97be7473a754a4f3ed83ff73c5e4f84

This reverts commit 32154d2c.

Reason for revert: DroidMonitor: potential culprit of build break. Verifying via ABTD before reverting as a part of standard investigation.

Change-Id: Iad0379e1498bfee91b4e7c0cb6c50f2a5ce800ad

Bug: 311174191
Test: N/A
Change-Id: Ief5c80d6a03c58830329c81a8c0350ff1955583e

As part of upcoming `servicestests` work, this change makes some
general changes.

We don't currently have Mainline stubs included in the Ravenwood
runtime, so this change "hides" references in `PackageManagerInternal`
and `ActivityManagerInternal` while keeping the clients working.

Adds support for `Process.setCanSelfBackground()` to support
ServiceThread.

Adds support for `LocalServices`, along with a new hook to clear out
any registered services between each Ravenwood test.

Bug: 292141694
Test: atest CtsUtilTestCasesRavenwood
Change-Id: Iea3b4a5bf2ebebb34d56cfc76014fc07987cf355

These are common utility classes used by framework code, so support
them and their relevant tests.

Since they depend on ErrnoException and IoUtils, bring over limited
versions of those classes into `libcore-fake`, and compile them into
the Ravenwood runtime using variant washing.

Bug: 292141694
Test: atest FrameworksCoreTestsRavenwood FrameworksUtilTestsRavenwood
Change-Id: Ib44dedacfa4d12a7d697973caf070477ed07202d

See below for the log filename.

Also disable an unimplemented flag.

Bug: 311174191
Test: ./scripts/run-all-tests.sh
Test: m framework-minus-apex.ravenwood
    and examine console output and
    out/soong/.intermediates/frameworks/base/framework-minus-apex.ravenwood-base/android_common/gen/hoststubgen_framework-minus-apex.log
Change-Id: I9997370c93e2fe90276d5f3e657d45d440ca0a59

Test: Automatic
Bug: 296324826
Change-Id: I06b8df4fd53304d6663e80879892a635168ab28b

In some cases, filter classes need to use [outermostFilter]
to refer to policies on other items.

Bug: 292141694
Test: run-all-tests.sh
Change-Id: I6f2796fb44e7f70e9f64f77107b2046c3733e0e2

Also fix the AIDL class detection.

Test: m framework-minus-apex.ravenwood and make sure IAccountAthenticator
  and its nested classes are all kept.
Test: ./run-all-tests.sh
Change-Id: Idb870a6e7558f7303a2072afbede2a868204e2bf

Also remove unused option

Bug: 292141694
Test: run-all-tests.sh
Change-Id: I32c663100362c9bf19ed42c6453bdf097bb20b49

The text policy file now allows ":aidl" as a "special class name" and allow
setting a policy for AIDL generated classess.

Test: run-all-tests.sh
Bug: 292141694
Change-Id: I5373bf96047f9d0accf9321e6f82082c65124138

- Now both --out-stub-jar and --out-impl-jar are optional
- Disable --enable-non-stub-method-check by default
  (it's not fully implemented anyway)
- Delete the script `run-ravenwood-test` since now atest
  just works.

Test: run-all-tests.sh
Bug: 292141694
Change-Id: I3b7d63600139425e5fffc12930ee860edf2acd7f

Now that we have a solid foundation of classes available, one of the
tricker pieces is supporting Handler/Looper under Ravenwood.  At its
core, the native implementation of MessageQueue can be emulated using
core JVM primitives, which is enough to reliably pass CTS.

Advanced features like FileDescriptor events will need to wait until
we eventually have real JNI support.

Fix obscure bug with SystemClock; must be positive number.  Always
start our "fake" pointers from 1 to prevent `nullptr` oddness.

Bug: 292141694
Test: atest-dev CtsOsTestCasesRavenwood CtsOsTestCases
Change-Id: I0f82b659973443968ef2609a7e3151f381abff29

Internal test authors are likely going to want to use internal
utilities that aren't in the official API surface.  This change adds
those to Ravenwood, along with local tests to confirm they work.

Bug: 292141694
Test: atest-dev FrameworksUtilTestsRavenwood
Change-Id: I0f4df50416d153418d4525bd8ec5c4dbf04521a2

... with native substition classes.

It turned out native methods can be non-static. Now we handle them in this way:
- The substitution method still needs to be static.
- And take the original 'this' as the first argument.

The first argument type must match the source class.
(e.g. the arg type can't be `Object`)

Test: run-all-tests.sh
Bug: 292141694
Change-Id: I9a53e1c155e138e466589c1a7684dcc86601e9c8

Initial pass at foundational classes under android.content, along
with CTS to verify consistency.

Methods that interface to broader parts of OS remain marked as
"throw" for the moment, such as cross-process work and StrictMode.

Bug: 292141694
Test: atest-dev CtsOsTestCasesRavenwood CtsOsTestCases
Test: atest-dev CtsContentTestCasesRavenwood CtsContentTestCases
Change-Id: Ic3deafb1f4058fcc104882a3508728994669f7d2

We have the XML interfaces from libcore, but the implementations
there are tied closely to things like StringPool.  We thankfully
have our own human-readable XML serializer that we could use, but
there's unfortunately not a good pull parser.

To get us unstuck for the moment, pivot the internals to
unconditionally use the binary XML format, which at least we
know is thoroughly tested, and any data written through this path
can then also be parsed.

This is enough to support PersistableBundle, and we'll circle back
to get ourselves a human-readable XML implementation in the future.

Bug: 292141694
Test: atest-dev CtsOsTestCasesRavenwood CtsOsTestCases
Change-Id: I875a3a2b0e95e52861afe187e2a5e9f1e740d8d5

FeatureFlagsFilter looks for `android:featureFlag` attributes in the XML
and removes elements according to the given flag values.

Bug: 297373084
Test: atest aapt2_tests
Change-Id: Icf97de2152c0c53b0b4518ae837e0d198873d1c5

The Ravenwood environment doesn't support IPC, but much of the code
that developers intend to test (such as AIDL stubs) still relies on
baseline same-process behavior to be intact.

This change adds UID and PID support to Process and Binder, but we
carefully communicate that it's only available when the test author
has configured it via a RavenwoodRule.  This ensures that tests
don't accidentally rely on unexpected defaults, as some tests will
want AID_SYSTEM, and others want a normal app UID.

Also bring along SystemClock, PatternMatcher, and ParcelUuid
along with relevant tests.

Finally, now that we have an IgnoreUnderRavenwood annotation, we
can pivot back our default failure to be a RuntimeException instead
of an AssumptionViolatedException.

Bug: 292141694
Test: atest-dev CtsOsTestCasesRavenwood CtsOsTestCases
Change-Id: I5f54c3179b2d305b9ab9144c43fd063c6b756e44

These inline annotations make maintenance commitments easier for
code owners to reason about.

Bug: 292141694
Test: atest-dev CtsUtilTestCasesRavenwood CtsUtilTestCases
Change-Id: Ia3479c7fd66123e2cc759c661fc551967ecdec08

For now, we inherit the visibility of the enclosing class.

So there's now way to make them "throw" yet.

Bug: 310212493
Bug: 292141694
Test: run-all-tests.sh
Test: atest --no-bazel-mode CtsUtilTestCasesRavenwood
Change-Id: I590e4e972a3b0812c0470c9872c02cf7293e83f6

Also add some presubmit tests as a smoke test.

Bug: 292141694
Test: run-all-tests.sh
Test: atest --no-bazel-mode CtsUtilTestCasesRavenwood

Change-Id: I30569313b764dfa30db9c2c5627050da4a6a1d67

This detector ensures that all AIDL-generated interfaces are annotated
with one permission annotation (@EnforcePermission,
@NoPermissionRequired, or @PermissionManuallyEnforced). It is part of
the framework linters and disabled by default.

It will be enabled explicitly in a subsequent change (for
services/Android.bp). The baseline of the services will also be updated
to capture the current status of non-annotated interfaces.

Bug: 220214993
Test: atest --host AndroidFrameworkLintCheckerTest
Change-Id: I0fbd41b63465f119d90505153fa3a98c0fcdc798

Bug: 292141694
Test: run-all-tests.sh
Test: atest --no-bazel-mode CtsUtilTestCasesRavenwood

Change-Id: I492206e4b14e02fb3d563c3bc5cd2f0b4907317a

Bug: 297373084
Test: atest aapt2_tests
Change-Id: I7567aa8f41e6fde7334430446a940eb6b04c1446

We have baseline implementations of the Parcel and Bundle, so we're
ready to support them under the Ravenwood environment.  Brings along
the relevant CTS to prove that it works consistently on both devices
and Ravenwood.  Make a few test-driven bug fixes to Parcel code.

Currently does not support FDs or Binders.

Add new `@IgnoreUnderRavenwood` annotation that is respected by a
new `RavenwoodRule`, letting the same test code be shared to run
under both devices and Ravenwood.  Currently packaged under our own
area of the tree, but named to match layout of `platform_testing`
for future migration.

Add "ThrowClass" policy.

Bug: 292141694
Test: atest-dev CtsOsTestCasesRavenwood CtsOsTestCases:ParcelTest CtsOsTestCases:BundleTest
Change-Id: I88d19afff47fbea6557e922a10e8555ee0f70ba3

In commit 9252e5ce, the logic did not ensure that the super method
belonged to the Stub class, and not any arbitrary method in a parent.

Refactor EnforcePermissionUtils by:
 - Removing isContainedInSubclassOfStub() in favour of containingStub(),
   which returns the Stub PsiClass. Document that this method does not
   mean that the argument is necessary an AIDL-generated method.
 - Update getContainingAidlInterface() to pass the PsiClass to
   findSuperMethod. This ensures that only the Stub class and its
   parents are considered.
 - Drop the check for IINTERFACE_INTERFACE. This is already verified in
   the inner call to isStub().

The same logic is applied manually to EnforcePermissionDetector, as each
condition in getContainingAidlInterface() raises a different error
message.

Add a test to confirm the behaviour of EnforcePermissionDetector.

Bug: 307433823
Test: atest --host AndroidGlobalLintCheckerTest
Test: atest --host AndroidFrameworkLintCheckerTest
Test: enforce_permission_counter
Change-Id: If791b6d8741e5db483589446484bb68061b67b70

Only implicitly include auto-generated enum members.

Bug: 292141694
Test: run-all-tests.sh
Test: atest --no-bazel-mode CtsUtilTestCasesRavenwood
Change-Id: Iab2f3ec28fb47293e342e09aee9a2596baa31800

Example:
--package-redirect dalvik:com.android.hoststubgen.substitution.dalvik

will rewrite all references to classes `dalvik.*` to `com....dalvik.*`.
This allows us to define libcore substitution classes in a different package.
This is useful becuase javac won't let us add classes to the `dalvic` package
which is already taken by the libcore module.

Bug: 292141694
Test: run-all-tests.sh

Change-Id: I01e72f4b4a7ce4baefaaccddbb462edd84267e0e