Support including apk inside an apex

New property "apps" is added to APEX soong module. This property
configure a list of APKs to package inside APEX payload. For each
android_app module package it's APK into /app/$(android_app module Name)
directory.

Bug: 139906763
Test: m -j
Change-Id: Ic6655f211951af08097c76e157a07ebc52425718
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 8de4cef..e2d85ae 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -103,6 +103,7 @@
 	ctx.RegisterModuleType("filegroup", android.ModuleFactoryAdaptor(android.FileGroupFactory))
 	ctx.RegisterModuleType("java_library", android.ModuleFactoryAdaptor(java.LibraryFactory))
 	ctx.RegisterModuleType("java_import", android.ModuleFactoryAdaptor(java.ImportFactory))
+	ctx.RegisterModuleType("android_app", android.ModuleFactoryAdaptor(java.AndroidAppFactory))
 
 	ctx.PreArchMutators(func(ctx android.RegisterMutatorsContext) {
 		ctx.BottomUp("prebuilts", android.PrebuiltMutator).Parallel()
@@ -210,31 +211,33 @@
 		"system/sepolicy/apex/myapex_keytest-file_contexts": nil,
 		"system/sepolicy/apex/otherapex-file_contexts":      nil,
 		"system/sepolicy/apex/commonapex-file_contexts":     nil,
-		"mylib.cpp":                            nil,
-		"mylib_common.cpp":                     nil,
-		"mytest.cpp":                           nil,
-		"mytest1.cpp":                          nil,
-		"mytest2.cpp":                          nil,
-		"mytest3.cpp":                          nil,
-		"myprebuilt":                           nil,
-		"my_include":                           nil,
-		"foo/bar/MyClass.java":                 nil,
-		"prebuilt.jar":                         nil,
-		"vendor/foo/devkeys/test.x509.pem":     nil,
-		"vendor/foo/devkeys/test.pk8":          nil,
-		"testkey.x509.pem":                     nil,
-		"testkey.pk8":                          nil,
-		"testkey.override.x509.pem":            nil,
-		"testkey.override.pk8":                 nil,
-		"vendor/foo/devkeys/testkey.avbpubkey": nil,
-		"vendor/foo/devkeys/testkey.pem":       nil,
-		"NOTICE":                               nil,
-		"custom_notice":                        nil,
-		"testkey2.avbpubkey":                   nil,
-		"testkey2.pem":                         nil,
-		"myapex-arm64.apex":                    nil,
-		"myapex-arm.apex":                      nil,
-		"frameworks/base/api/current.txt":      nil,
+		"mylib.cpp":                                  nil,
+		"mylib_common.cpp":                           nil,
+		"mytest.cpp":                                 nil,
+		"mytest1.cpp":                                nil,
+		"mytest2.cpp":                                nil,
+		"mytest3.cpp":                                nil,
+		"myprebuilt":                                 nil,
+		"my_include":                                 nil,
+		"foo/bar/MyClass.java":                       nil,
+		"prebuilt.jar":                               nil,
+		"vendor/foo/devkeys/test.x509.pem":           nil,
+		"vendor/foo/devkeys/test.pk8":                nil,
+		"testkey.x509.pem":                           nil,
+		"testkey.pk8":                                nil,
+		"testkey.override.x509.pem":                  nil,
+		"testkey.override.pk8":                       nil,
+		"vendor/foo/devkeys/testkey.avbpubkey":       nil,
+		"vendor/foo/devkeys/testkey.pem":             nil,
+		"NOTICE":                                     nil,
+		"custom_notice":                              nil,
+		"testkey2.avbpubkey":                         nil,
+		"testkey2.pem":                               nil,
+		"myapex-arm64.apex":                          nil,
+		"myapex-arm.apex":                            nil,
+		"frameworks/base/api/current.txt":            nil,
+		"build/make/core/proguard.flags":             nil,
+		"build/make/core/proguard_basic_keeps.flags": nil,
 	})
 
 	return ctx, config
@@ -1977,6 +1980,38 @@
 	`)
 }
 
+func TestApexWithApps(t *testing.T) {
+	ctx, _ := testApex(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			apps: [
+				"AppFoo",
+			],
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		android_app {
+			name: "AppFoo",
+			srcs: ["foo/bar/MyClass.java"],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+	`)
+
+	module := ctx.ModuleForTests("myapex", "android_common_myapex")
+	apexRule := module.Rule("apexRule")
+	copyCmds := apexRule.Args["copy_commands"]
+
+	ensureContains(t, copyCmds, "image.apex/app/AppFoo/AppFoo.apk")
+
+}
+
 func TestMain(m *testing.M) {
 	run := func() int {
 		setUp()