/*
* Copyright (C) 2016 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.test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
/**
* Utilities for creating Answers for mock objects
*/
public class MockAnswerUtil {
/**
* Answer that calls the method in the Answer called "answer" that matches the type signature of
* the method being answered. An error will be thrown at runtime if the signature does not match
* exactly.
*/
public static class AnswerWithArguments implements Answer<Object> {
@Override
public final Object answer(InvocationOnMock invocation) throws Throwable {
Method method = invocation.getMethod();
try {
Method implementation = getClass().getMethod("answer", method.getParameterTypes());
if (!implementation.getReturnType().equals(method.getReturnType())) {
throw new RuntimeException("Found answer method does not have expected return "
+ "type. Expected: " + method.getReturnType() + ", got "
+ implementation.getReturnType());
}
Object[] args = invocation.getArguments();
try {
return implementation.invoke(this, args);
} catch (IllegalAccessException e) {
throw new RuntimeException("Error invoking answer method", e);
} catch (InvocationTargetException e) {
throw e.getCause();
}
} catch (NoSuchMethodException e) {
throw new RuntimeException("Could not find answer method with the expected args "
+ Arrays.toString(method.getParameterTypes()), e);
}
}
}
}