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/*
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.services.prh.integration.junit5.mockito;
import static org.mockito.Mockito.mock;
import java.lang.reflect.Parameter;
import org.junit.jupiter.api.extension.ExtensionContext;
import org.junit.jupiter.api.extension.ExtensionContext.Namespace;
import org.junit.jupiter.api.extension.ExtensionContext.Store;
import org.junit.jupiter.api.extension.ParameterContext;
import org.junit.jupiter.api.extension.ParameterResolver;
import org.junit.jupiter.api.extension.TestInstancePostProcessor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
/**
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 3/27/18
*
* {@code MockitoExtension } showcases the {@link TestInstancePostProcessor} and {@link ParameterResolver} extension
* APIs of JUnit 5 by providing dependency injection support at the field level and at the method parameter level
* viaMockito 2.x's {@link Mock @Mock} annotation.
*/
public class MockitoExtension implements TestInstancePostProcessor, ParameterResolver {
@Override
public void postProcessTestInstance(Object testInstance, ExtensionContext context) {
MockitoAnnotations.initMocks(testInstance);
}
@Override
public boolean supportsParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
return parameterContext.getParameter().isAnnotationPresent(Mock.class);
}
@Override
public Object resolveParameter(ParameterContext parameterContext, ExtensionContext extensionContext) {
return getMock(parameterContext.getParameter(), extensionContext);
}
private Object getMock(Parameter parameter, ExtensionContext extensionContext) {
Class<?> mockType = parameter.getType();
Store mocks = extensionContext.getStore(Namespace.create(MockitoExtension.class, mockType));
String mockName = getMockName(parameter);
if (mockName != null) {
return mocks.getOrComputeIfAbsent(mockName, key -> mock(mockType, mockName));
} else {
return mocks.getOrComputeIfAbsent(mockType.getCanonicalName(), key -> mock(mockType));
}
}
private String getMockName(Parameter parameter) {
String explicitMockName = parameter.getAnnotation(Mock.class).name().trim();
if (!explicitMockName.isEmpty()) {
return explicitMockName;
} else if (parameter.isNamePresent()) {
return parameter.getName();
}
return null;
}
}
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