Add android_test_helper_app

Add a module that can build an APK that will be used by a test.
The APK will be sideloadable, and can be added to a test suite,
but will not autogenerate a test config file.

Test: m checkbuild
Change-Id: Idf325b1c9a2cbcd16b126da3331671e4aed4b3da

java/androidmk.go

@@ -271,6 +271,21 @@ func (a *AndroidTest) AndroidMk() android.AndroidMkData {
 	return data
 }
 
+func (a *AndroidTestHelperApp) AndroidMk() android.AndroidMkData {
+	data := a.AndroidApp.AndroidMk()
+	data.Extra = append(data.Extra, func(w io.Writer, outputFile android.Path) {
+		fmt.Fprintln(w, "LOCAL_MODULE_TAGS := tests")
+		if len(a.appTestHelperAppProperties.Test_suites) > 0 {
+			fmt.Fprintln(w, "LOCAL_COMPATIBILITY_SUITE :=",
+				strings.Join(a.appTestHelperAppProperties.Test_suites, " "))
+		} else {
+			fmt.Fprintln(w, "LOCAL_COMPATIBILITY_SUITE := null-suite")
+		}
+	})
+
+	return data
+}
+
 func (a *AndroidLibrary) AndroidMk() android.AndroidMkData {
 	data := a.Library.AndroidMk()
 

java/app.go

@@ -30,6 +30,7 @@ import (
 func init() {
 	android.RegisterModuleType("android_app", AndroidAppFactory)
 	android.RegisterModuleType("android_test", AndroidTestFactory)
+	android.RegisterModuleType("android_test_helper_app", AndroidTestHelperAppFactory)
 	android.RegisterModuleType("android_app_certificate", AndroidAppCertificateFactory)
 }
 
@@ -359,6 +360,39 @@ func AndroidTestFactory() android.Module {
 	return module
 }
 
+type appTestHelperAppProperties struct {
+	// list of compatibility suites (for example "cts", "vts") that the module should be
+	// installed into.
+	Test_suites []string `android:"arch_variant"`
+}
+
+type AndroidTestHelperApp struct {
+	AndroidApp
+
+	appTestHelperAppProperties appTestHelperAppProperties
+}
+
+func AndroidTestHelperAppFactory() android.Module {
+	module := &AndroidTestHelperApp{}
+
+	module.Module.deviceProperties.Optimize.Enabled = proptools.BoolPtr(true)
+
+	module.Module.properties.Installable = proptools.BoolPtr(true)
+	module.appProperties.EmbedJNI = true
+
+	module.AddProperties(
+		&module.Module.properties,
+		&module.Module.deviceProperties,
+		&module.Module.protoProperties,
+		&module.aaptProperties,
+		&module.appProperties,
+		&module.appTestHelperAppProperties)
+
+	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
+	android.InitDefaultableModule(module)
+	return module
+}
+
 type AndroidAppCertificate struct {
 	android.ModuleBase
 	properties  AndroidAppCertificateProperties