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/*
* Copyright (C) 2022 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 android.app.sdksandbox.testutils.testscenario;
import android.app.sdksandbox.SandboxedSdk;
import android.app.sdksandbox.SandboxedSdkProvider;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.RemoteException;
import android.util.Log;
import android.view.View;
import androidx.test.annotation.UiThreadTest;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* This class contains all the binding logic needed for a test suite within an SDK. To set up SDK
* tests, extend this class. To attach a custom view to your tests, override beforeEachTest() to
* return your view (for example a WebView).
*/
public abstract class SdkSandboxTestScenarioRunner extends SandboxedSdkProvider {
private static final String TAG = SdkSandboxTestScenarioRunner.class.getName();
private Object mTestInstance;
/**
* This API allows you to provide a separate test class to execute tests against. It will
* default to the class instance it is already attached to.
*/
public Object getTestInstance() {
return this;
}
public View beforeEachTest(Context windowContext, Bundle params, int width, int height) {
return new View(windowContext);
}
@Override
public final View getView(Context windowContext, Bundle params, int width, int height) {
return beforeEachTest(windowContext, params, width, height);
}
@Override
public final SandboxedSdk onLoadSdk(Bundle params) {
mTestInstance = getTestInstance();
ISdkSandboxTestExecutor.Stub testExecutor =
new ISdkSandboxTestExecutor.Stub() {
public void executeTest(
String testName,
Bundle testParams,
ISdkSandboxResultCallback resultCallback) {
try {
// We allow test authors to write a test without the bundle parameters
// for convenience.
// We will first look for the test name with a bundle parameter
// if we don't find that, we will load the test without a parameter.
boolean hasParams = true;
Method testMethod =
findTest(testName, /*throwException*/ false, Bundle.class);
if (testMethod == null) {
hasParams = false;
testMethod = findTest(testName, /*throwException*/ true);
}
if (testMethod.isAnnotationPresent(UiThreadTest.class)) {
// The method reference has to be final before being
// used inside a lambda to ensure the variant stays the
// same
final Method method = testMethod;
final boolean params = hasParams;
new Handler(Looper.getMainLooper())
.post(
() -> {
invokeTestMethod(
method,
params,
testParams,
resultCallback);
});
} else {
invokeTestMethod(testMethod, hasParams, testParams, resultCallback);
}
} catch (NoSuchMethodException error) {
try {
resultCallback.onError(getStackTrace(error));
} catch (RemoteException e) {
Log.e(TAG, "Failed to find method and report back");
}
}
}
};
return new SandboxedSdk(testExecutor);
}
private Method findTest(String testName, boolean throwException, Class<?>... parameterTypes)
throws NoSuchMethodException {
try {
return mTestInstance.getClass().getMethod(testName, parameterTypes);
} catch (NoSuchMethodException error) {
if (throwException) {
throw error;
}
return null;
}
}
private void invokeTestMethod(
final Method method,
final boolean hasParams,
final Bundle params,
final ISdkSandboxResultCallback resultCallback) {
try {
if (hasParams) {
method.invoke(mTestInstance, params);
} else {
method.invoke(mTestInstance);
}
resultCallback.onResult();
} catch (Exception error) {
String errorStackTrace = getStackTrace(error);
try {
resultCallback.onError(errorStackTrace);
} catch (Exception ex) {
if (error.getCause() instanceof AssertionError) {
Log.e(TAG, "Assertion failed on invoked method " + errorStackTrace);
} else if (error.getCause() instanceof InvocationTargetException) {
Log.e(TAG, "Invocation target failed " + errorStackTrace);
} else if (error.getCause() instanceof NoSuchMethodException) {
Log.e(TAG, "Test method not found " + errorStackTrace);
} else {
Log.e(TAG, "Test execution failed " + errorStackTrace);
}
}
}
}
private String getStackTrace(Exception error) {
StringWriter errorStackTrace = new StringWriter();
PrintWriter errorWriter = new PrintWriter(errorStackTrace);
error.getCause().printStackTrace(errorWriter);
return errorStackTrace.toString();
}
}
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