Enforce that tests in MTS specify a min_sdk_version

Specifying min_sdk_version ensures backwards compatibility. There are
some existing violations, and those have been baseline'd using an
allowlist.

Bug: 156476221
Test: m nothing
Change-Id: I55098206da8ec5cfa0a9f5e7b41c9b8dedbdcbd2

java/android_manifest.go

@@ -71,12 +71,15 @@ func shouldReturnFinalOrFutureInt(ctx android.ModuleContext, targetSdkVersionLev
 	return targetSdkVersionLevel.IsPreview() && (ctx.Config().UnbundledBuildApps() || includedInMts(ctx.Module()))
 }
 
-// Helper function that casts android.Module to java.androidTestApp
+// Helper function that returns true if android_test, android_test_helper_app, java_test are in an MTS suite.
-// If this type conversion is possible, it queries whether the test app is included in an MTS suite
 func includedInMts(module android.Module) bool {
 	if test, ok := module.(androidTestApp); ok {
 		return test.includedInTestSuite("mts")
 	}
+	// java_test
+	if test, ok := module.(*Test); ok {
+		return android.PrefixInList(test.testProperties.Test_suites, "mts")
+	}
 	return false
 }
 

java/app.go

@@ -345,7 +345,35 @@ func (a *AndroidApp) OverridablePropertiesDepsMutator(ctx android.BottomUpMutato
 	}
 }
 
+// TODO(b/156476221): Remove this allowlist
+var (
+	missingMinSdkVersionMtsAllowlist = []string{
+		"CellBroadcastReceiverGoogleUnitTests",
+		"CellBroadcastReceiverUnitTests",
+		"CtsBatterySavingTestCases",
+		"CtsDeviceAndProfileOwnerApp23",
+		"CtsDeviceAndProfileOwnerApp30",
+		"CtsIntentSenderApp",
+		"CtsJobSchedulerTestCases",
+		"CtsMimeMapTestCases",
+		"CtsTareTestCases",
+		"LibStatsPullTests",
+		"MediaProviderClientTests",
+		"TeleServiceTests",
+		"TestExternalImsServiceApp",
+		"TestSmsRetrieverApp",
+		"TetheringPrivilegedTests",
+	}
+)
+
+func checkMinSdkVersionMts(ctx android.ModuleContext, minSdkVersion android.ApiLevel) {
+	if includedInMts(ctx.Module()) && !minSdkVersion.Specified() && !android.InList(ctx.ModuleName(), missingMinSdkVersionMtsAllowlist) {
+		ctx.PropertyErrorf("min_sdk_version", "min_sdk_version is a required property for tests included in MTS")
+	}
+}
+
 func (a *AndroidTestHelperApp) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	checkMinSdkVersionMts(ctx, a.MinSdkVersion(ctx))
 	applicationId := a.appTestHelperAppProperties.Manifest_values.ApplicationId
 	if applicationId != nil {
 		if a.overridableAppProperties.Package_name != nil {
@@ -1366,6 +1394,7 @@ func (a *AndroidTestHelperApp) includedInTestSuite(searchPrefix string) bool {
 }
 
 func (a *AndroidTest) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	checkMinSdkVersionMts(ctx, a.MinSdkVersion(ctx))
 	var configs []tradefed.Config
 	if a.appTestProperties.Instrumentation_target_package != nil {
 		a.additionalAaptFlags = append(a.additionalAaptFlags,

java/app_test.go

@@ -4146,6 +4146,7 @@ func TestTargetSdkVersionMtsTests(t *testing.T) {
 	bpTemplate := `
 	%v {
 		name: "mytest",
+		min_sdk_version: "34",
 		target_sdk_version: "%v",
 		test_suites: ["othersuite", "%v"],
 	}

java/java.go

@@ -1510,6 +1510,7 @@ func (j *TestHost) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 }
 
 func (j *Test) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	checkMinSdkVersionMts(ctx, j.MinSdkVersion(ctx))
 	j.generateAndroidBuildActionsWithConfig(ctx, nil)
 	android.SetProvider(ctx, testing.TestModuleProviderKey, testing.TestModuleProviderData{})
 }