mixed builds: add cc_test bazel handler, and add adbd_test to staging allowlist.

This will allow the test_suites_{arm64, x86_64} CI targets on
git_master-bazel to build adbd_test with bazel in `m`.

This is currently implemented similar to the cc_binary handler to
hydrate the output path field.

The tradefed config is still currently handled by Soong in
testBinary#install, which is called from both ProcessBazelQueryResponse
and GenerateAndroidBuildActions. We'll move the tradefed config path to
a mixed builds handler when it's ready on the cc_test bazel rule side.

Tested with `atest` with cuttlefish. Since `atest` doesn't have a way to pass
--bazel-mode-staging to its internal call to Soong, so I manually tested
this by adding adbt_test to the prod allowlist, and confirmed that the
installed adbd_test is the same binary as the one in bazel-out.

Test: $ showcommands adbd_test | grep bazel-out | tail -n1

```
/bin/bash -c "rm -f
out/target/product/vsoc_x86_64/data/nativetest64/adbd_test/adbd_test &&
cp -f -d
out/bazel/output/execroot/__main__/bazel-out/android_x86_64_silvermont-opt-ST-59d4124ca041/bin/packages/modules/adb/adbd_test
out/target/product/vsoc_x86_64/data/nativetest64/adbd_test/adbd_test"
```

Test: Add adbd_test to prod allowlist and run 'lunch aosp_cf_x86_64_phone-userdebug; atest adbd_test', all tests pass.
Bug: 258426425
Bug: 261692372
Change-Id: I6be329f39d607af8daa1dc772b23e8dd0247418c

android/allowlists/allowlists.go

@@ -1367,5 +1367,6 @@ var (
 	// also be built - do not add them to this list.
 	StagingMixedBuildsEnabledList = []string{
 		"com.android.adbd",
+		"adbd_test",
 	}
 )

android/bazel_handler.go

@@ -645,10 +645,12 @@ load(":main.bzl", "config_node", "mixed_build_root", "phony_root")
 
 mixed_build_root(name = "buildroot",
     deps = [%s],
+    testonly = True, # Unblocks testonly deps.
 )
 
 phony_root(name = "phonyroot",
     deps = [":buildroot"],
+    testonly = True, # Unblocks testonly deps.
 )
 `
 	configNodeFormatString := `
@@ -656,6 +658,7 @@ config_node(name = "%s",
     arch = "%s",
     os = "%s",
     deps = [%s],
+    testonly = True, # Unblocks testonly deps.
 )
 `
 

bazel/cquery/request_type.go

@@ -11,7 +11,7 @@ var (
 	GetPythonBinary     = &getPythonBinaryRequestType{}
 	GetCcInfo           = &getCcInfoType{}
 	GetApexInfo         = &getApexInfoType{}
-	GetCcUnstrippedInfo = &getCcUnstippedInfoType{}
+	GetCcUnstrippedInfo = &getCcUnstrippedInfoType{}
 )
 
 type CcInfo struct {
@@ -275,13 +275,13 @@ func (g getApexInfoType) ParseResult(rawString string) (ApexInfo, error) {
 // getCcUnstrippedInfoType implements cqueryRequest interface. It handles the
 // interaction with `bazel cquery` to retrieve CcUnstrippedInfo provided
 // by the` cc_binary` and `cc_shared_library` rules.
-type getCcUnstippedInfoType struct{}
+type getCcUnstrippedInfoType struct{}
 
-func (g getCcUnstippedInfoType) Name() string {
+func (g getCcUnstrippedInfoType) Name() string {
 	return "getCcUnstrippedInfo"
 }
 
-func (g getCcUnstippedInfoType) StarlarkFunctionBody() string {
+func (g getCcUnstrippedInfoType) StarlarkFunctionBody() string {
 	return `unstripped_tag = "//build/bazel/rules/cc:stripped_cc_common.bzl%CcUnstrippedInfo"
 p = providers(target)
 output_path = target.files.to_list()[0].path
@@ -298,7 +298,7 @@ return json_encode({
 // ParseResult returns a value obtained by parsing the result of the request's Starlark function.
 // The given rawString must correspond to the string output which was created by evaluating the
 // Starlark given in StarlarkFunctionBody.
-func (g getCcUnstippedInfoType) ParseResult(rawString string) (CcUnstrippedInfo, error) {
+func (g getCcUnstrippedInfoType) ParseResult(rawString string) (CcUnstrippedInfo, error) {
 	var info CcUnstrippedInfo
 	err := parseJson(rawString, &info)
 	return info, err

cc/cc.go

@@ -1858,7 +1858,22 @@ func (c *Module) QueueBazelCall(ctx android.BaseModuleContext) {
 	c.bazelHandler.QueueBazelCall(ctx, c.getBazelModuleLabel(ctx))
 }
 
+var (
+	mixedBuildSupportedCcTest = []string{
+		"adbd_test",
+	}
+)
+
+// IsMixedBuildSupported returns true if the module should be analyzed by Bazel
+// in any of the --bazel-mode(s). This filters at the module level and takes
+// precedence over the allowlists in allowlists/allowlists.go.
 func (c *Module) IsMixedBuildSupported(ctx android.BaseModuleContext) bool {
+	if c.testBinary() && !android.InList(c.Name(), mixedBuildSupportedCcTest) {
+		// Per-module rollout of mixed-builds for cc_test modules.
+		return false
+	}
+
+	// Enable mixed builds as long as the cc_* module type has a bazel handler.
 	return c.bazelHandler != nil
 }
 
@@ -1888,6 +1903,8 @@ func (c *Module) ProcessBazelQueryResponse(ctx android.ModuleContext) {
 	}
 	mctx.ctx = mctx
 
+	// TODO(b/244432500): Get the tradefed config from the bazel target instead
+	// of generating it with Soong.
 	c.maybeInstall(mctx, apexInfo)
 }
 
@@ -2038,6 +2055,9 @@ func (c *Module) maybeUnhideFromMake() {
 	}
 }
 
+// maybeInstall is called at the end of both GenerateAndroidBuildActions and
+// ProcessBazelQueryResponse to run the install hooks for installable modules,
+// like binaries and tests.
 func (c *Module) maybeInstall(ctx ModuleContext, apexInfo android.ApexInfo) {
 	if !proptools.BoolDefault(c.Installable(), true) {
 		// If the module has been specifically configure to not be installed then

cc/test.go

@@ -23,6 +23,7 @@ import (
 
 	"android/soong/android"
 	"android/soong/bazel"
+	"android/soong/bazel/cquery"
 	"android/soong/tradefed"
 )
 
@@ -135,6 +136,7 @@ func init() {
 // static_libs dependency on libgtests unless the gtest flag is set to false.
 func TestFactory() android.Module {
 	module := NewTest(android.HostAndDeviceSupported, true)
+	module.bazelHandler = &ccTestBazelHandler{module: module}
 	return module.Init()
 }
 
@@ -481,6 +483,7 @@ func (test *testBinary) install(ctx ModuleContext, file android.Path) {
 
 func NewTest(hod android.HostOrDeviceSupported, bazelable bool) *Module {
 	module, binary := newBinary(hod, bazelable)
+	module.bazelable = bazelable
 	module.multilib = android.MultilibBoth
 	binary.baseInstaller = NewTestInstaller()
 
@@ -637,6 +640,30 @@ func NewBenchmark(hod android.HostOrDeviceSupported) *Module {
 	return module
 }
 
+type ccTestBazelHandler struct {
+	module *Module
+}
+
+var _ BazelHandler = (*ccTestBazelHandler)(nil)
+
+func (handler *ccTestBazelHandler) QueueBazelCall(ctx android.BaseModuleContext, label string) {
+	bazelCtx := ctx.Config().BazelContext
+	bazelCtx.QueueBazelRequest(label, cquery.GetCcUnstrippedInfo, android.GetConfigKey(ctx))
+}
+
+func (handler *ccTestBazelHandler) ProcessBazelQueryResponse(ctx android.ModuleContext, label string) {
+	bazelCtx := ctx.Config().BazelContext
+	info, err := bazelCtx.GetCcUnstrippedInfo(label, android.GetConfigKey(ctx))
+	if err != nil {
+		ctx.ModuleErrorf(err.Error())
+		return
+	}
+
+	outputFilePath := android.PathForBazelOut(ctx, info.OutputFile)
+	handler.module.outputFile = android.OptionalPathForPath(outputFilePath)
+	handler.module.linker.(*testBinary).unstrippedOutputFile = android.PathForBazelOut(ctx, info.UnstrippedOutput)
+}
+
 // binaryAttributes contains Bazel attributes corresponding to a cc test
 type testBinaryAttributes struct {
 	binaryAttributes