mocking configKey in unit tests

SAML2AuthManagerImplTest.java

package org.apache.cloudstack.saml;

import com.cloud.user.DomainManager;
import com.cloud.user.dao.UserDao;
import org.apache.cloudstack.framework.config.ConfigKey;
import org.apache.cloudstack.framework.config.dao.ConfigurationDao;
import org.apache.cloudstack.framework.security.keystore.KeystoreDao;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareEverythingForTest;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import static org.mockito.Matchers.eq;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
@RunWith(PowerMockRunner.class)
@PrepareForTest({SAML2AuthManager.class})
public class SAML2AuthManagerImplTest {

    @Mock
    private KeystoreDao _ksDao;

    @Mock
    private SAMLTokenDao _samlTokenDao;

    @Mock
    private UserDao _userDao;

    @Mock
    DomainManager _domainMgr;

    @Mock
    ConfigurationDao _configDao;

    @InjectMocks
    SAML2AuthManagerImpl saml2AuthManager;

    @Before
    public void setUp() throws Exception {

    }

    @Test
    public void testStart() throws Exception {
        ConfigKey configKey = PowerMockito.mock(ConfigKey.class);
        Mockito.when(configKey.value()).thenReturn(true);
        PowerMockito.whenNew(ConfigKey.class).withArguments(Mockito.anyString(), eq(Boolean.class), Mockito.anyString(), Mockito.anyString(), Mockito.anyString(), Mockito
            .anyBoolean())
            .thenReturn(configKey);
        saml2AuthManager.start();
    }
}