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/*
 * Copyright 2008 the original author or authors.
 *
 * 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 org.powermock.api.easymock.mockpolicies;

import org.powermock.core.spi.PowerMockPolicy;
import org.powermock.mockpolicies.MockPolicyClassLoadingSettings;
import org.powermock.mockpolicies.MockPolicyInterceptionSettings;
import org.powermock.mockpolicies.support.LogPolicySupport;

import java.lang.reflect.Method;

import static org.easymock.EasyMock.makeThreadSafe;
import static org.powermock.api.easymock.PowerMock.createNiceMock;

/**
 * A base class for EasyMock log policies.
 */
abstract class AbstractEasyMockLogPolicyBase implements PowerMockPolicy {

	@Override
	public void applyClassLoadingPolicy(MockPolicyClassLoadingSettings settings) {
		settings.addFullyQualifiedNamesOfClassesToLoadByMockClassloader(getFullyQualifiedNamesOfClassesToLoadByMockClassloader());
	}

	@Override
	public void applyInterceptionPolicy(MockPolicyInterceptionSettings settings) {
		LogPolicySupport support = new LogPolicySupport();

		Method[] loggerFactoryMethods = support.getLoggerMethods(getLoggerFactoryClassName(), getLoggerMethodName(), getLogFrameworkName());

		Class loggerType = null;
		try {
			loggerType = support.getType(getLoggerClassToMock(), getLogFrameworkName());
		} catch (RuntimeException e) {
			throw e;
		} catch (Exception e) {
			throw new RuntimeException(e);
		}

		final Object loggerMock = createNiceMock(loggerType);
		// Allow the mock to be used in a multi-threaded environment
		makeThreadSafe(loggerMock, true);

		for (Method method : loggerFactoryMethods) {
			settings.stubMethod(method, loggerMock);
		}
	}

	/**
	 * @return The name of the methods in the Logger Factory that should return
	 *         a mock upon invocation.
	 */
	protected abstract String getLoggerMethodName();

	/**
	 * @return The fully-qualified class name of the Logger Factory that
	 *         contains the methods that should return a mock upon invocation.
	 */
	protected abstract String getLoggerFactoryClassName();

	/**
	 * @return The fully-qualified class name of the class that should be
	 *         mocked. The mock instance of this class will then be returned
	 *         each time a specified method in the Logger Factory is invoked.
	 */
	protected abstract String getLoggerClassToMock();

	/**
	 * @return The name of the log framework. Used in error messages, for
	 *         example if the {@link #getLoggerFactoryClassName()} cannot be
	 *         found in the classpath.
	 */
	protected abstract String getLogFrameworkName();

	/**
	 * @return The fully-qualified names of the classes that should be loaded by
	 *         the mock classloader.
	 */
	protected abstract String[] getFullyQualifiedNamesOfClassesToLoadByMockClassloader();
}