Allow a shared library to be positioned after the application on the classpath
This is useful if/when it's desired that an application contains the same
fully qualified class name that's also in the library.
The shared libraries that are treated in this manor are controlled by the resource
com.android.internal.R.config_shared_libraries_loaded_after_app
Bug: 179429740
Test: atest SharedLibraryLoadingTests
Change-Id: Ia37ff9bd545918d1e0f1f38548dcd86f177559d5
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/Android.bp b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/Android.bp
new file mode 100644
index 0000000..0d20497
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/Android.bp
@@ -0,0 +1,35 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+ default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+android_test_helper_app {
+ name: "SharedLibraryLoadingTests_SharedLibraryClientTests",
+ srcs: ["**/*.java"],
+ resource_dirs: ["res"],
+ libs: [
+ "SharedLibraryLoadingTests_StandardSharedLibrary",
+ "SharedLibraryLoadingTests_SharedLibraryLoadedAfter",
+ "android.test.base",
+ ],
+ static_libs: [
+ "androidx.test.ext.junit",
+ "androidx.test.rules",
+ "androidx.test.core",
+ "testng",
+ ],
+ platform_apis: true,
+}
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/AndroidManifest.xml b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/AndroidManifest.xml
new file mode 100644
index 0000000..e3a9b9b
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/AndroidManifest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright (C) 2021 The Android Open Source Project
+ ~
+ ~ Licensed under the Apache License, Version 2.0 (the "License");
+ ~ you may not use this file except in compliance with the License.
+ ~ You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing, software
+ ~ distributed under the License is distributed on an "AS IS" BASIS,
+ ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ~ See the License for the specific language governing permissions and
+ ~ limitations under the License.
+ -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.android.sharedlibloadingtest.client">
+ <application>
+ <uses-library android:name="android.test.runner" />
+ <uses-library android:name="com.android.sharedlibloadingtest.shared_library"/>
+ <uses-library android:name="com.android.sharedlibloadingtest.shared_library_after"/>
+ </application>
+
+ <instrumentation
+ android:name="androidx.test.runner.AndroidJUnitRunner"
+ android:targetPackage="com.android.sharedlibloadingtest.client" />
+</manifest>
\ No newline at end of file
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/res/values/values.xml b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/res/values/values.xml
new file mode 100644
index 0000000..5e0544e
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/res/values/values.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright (C) 2021 The Android Open Source Project
+ ~
+ ~ Licensed under the Apache License, Version 2.0 (the "License");
+ ~ you may not use this file except in compliance with the License.
+ ~ You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing, software
+ ~ distributed under the License is distributed on an "AS IS" BASIS,
+ ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ~ See the License for the specific language governing permissions and
+ ~ limitations under the License.
+ -->
+
+<resources>
+ <string name="identical_resource_key">client value</string>
+</resources>
\ No newline at end of file
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/ClientClass.java b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/ClientClass.java
new file mode 100644
index 0000000..e48fb83
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/ClientClass.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.sharedlibloadingtest;
+
+public class ClientClass {
+ @Override
+ public String toString() {
+ return "Client Code";
+ }
+}
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/DuplicateClassA.java b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/DuplicateClassA.java
new file mode 100644
index 0000000..4c77155
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/DuplicateClassA.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.sharedlibloadingtest;
+
+public class DuplicateClassA {
+ @Override
+ public String toString() {
+ return "Client's Version";
+ }
+}
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/DuplicateClassB.java b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/DuplicateClassB.java
new file mode 100644
index 0000000..86aa6a1
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/DuplicateClassB.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.sharedlibloadingtest;
+
+public class DuplicateClassB {
+ @Override
+ public String toString() {
+ return "Client's Version B";
+ }
+}
diff --git a/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/client/SharedLibraryLoadingOrderTest.java b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/client/SharedLibraryLoadingOrderTest.java
new file mode 100644
index 0000000..43bcb1a
--- /dev/null
+++ b/tests/SharedLibraryLoadingTest/test-apps/SharedLibraryClientTests/src/com/android/sharedlibloadingtest/client/SharedLibraryLoadingOrderTest.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.sharedlibloadingtest.client;
+
+import static org.testng.Assert.assertEquals;
+
+import android.content.Context;
+import android.content.res.Resources;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import com.android.internal.util.Preconditions;
+import com.android.sharedlibloadingtest.ClientClass;
+import com.android.sharedlibloadingtest.DuplicateClassA;
+import com.android.sharedlibloadingtest.DuplicateClassB;
+import com.android.sharedlibloadingtest.SharedClassAfter;
+import com.android.sharedlibloadingtest.StdSharedClass;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.Collections;
+import java.util.HashSet;
+
+@RunWith(AndroidJUnit4.class)
+public class SharedLibraryLoadingOrderTest {
+
+ @Test
+ public void testLoadingOfStdShareLibsShouldBeFirst() {
+ Preconditions.checkArgument(!getLibsLoadedAfter()
+ .contains("com.android.sharedlibloadingtest.shared_library"));
+ DuplicateClassA clazz = new DuplicateClassA();
+ assertEquals(clazz.toString(), "Standard Shared Lib's Version");
+
+ StdSharedClass stdSharedClass = new StdSharedClass();
+ assertEquals(stdSharedClass.toString(), "Nothing Special Lib");
+
+ ClientClass clientCode = new ClientClass();
+ assertEquals(clientCode.toString(), "Client Code");
+ }
+
+ @Test
+ public void testLoadingOfShareLibsIsAfter() {
+ Preconditions.checkArgument(getLibsLoadedAfter()
+ .contains("com.android.sharedlibloadingtest.shared_library_after"));
+ DuplicateClassB clazz = new DuplicateClassB();
+ assertEquals(clazz.toString(), "Client's Version B");
+
+ SharedClassAfter stdSharedClass = new SharedClassAfter();
+ assertEquals(stdSharedClass.toString(), "Also Nothing Special");
+
+ ClientClass clientCode = new ClientClass();
+ assertEquals(clientCode.toString(), "Client Code");
+ }
+
+ @Test
+ public void testLoadingOfResource() {
+ // aapt compiler gives each lib their own namespace so this test just confirming
+ // the resources can be loaded from the same context object
+ Context context = ApplicationProvider.getApplicationContext();
+ String clientString = context.getResources().getString(R.string.identical_resource_key);
+ assertEquals(clientString, "client value");
+ assertEquals(StdSharedClass.getResString(context), "std lib value");
+ assertEquals(SharedClassAfter.getResString(context), "loaded after value");
+
+ }
+
+ private HashSet<String> getLibsLoadedAfter() {
+ Resources systemR = Resources.getSystem();
+ HashSet<String> libsToLoadAfter = new HashSet<>();
+ Collections.addAll(libsToLoadAfter, systemR.getStringArray(
+ com.android.internal.R.array.config_sharedLibrariesLoadedAfterApp));
+ return libsToLoadAfter;
+ }
+}