/*-
 * ============LICENSE_START=======================================================
 * ONAP-PAP-REST
 * ================================================================================
 * Copyright (C) 2018 AT&T 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.policy.pap.xacml.rest.handler;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.when;
import static org.mockito.Matchers.any;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
import org.onap.policy.common.logging.ONAPLoggingContext;
import org.onap.policy.pap.xacml.rest.XACMLPapServlet;
import org.onap.policy.pap.xacml.rest.elk.client.PolicyElasticSearchController;
import org.onap.policy.rest.jpa.PolicyEntity;
import org.onap.policy.xacml.api.pap.PAPPolicyEngine;
import org.onap.policy.xacml.std.pap.StdEngine;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import com.mockrunner.mock.web.MockHttpServletRequest;
import com.mockrunner.mock.web.MockHttpServletResponse;
import java.sql.Connection;
import java.util.Collections;
import java.util.List;
import javax.persistence.EntityManager;

@RunWith(PowerMockRunner.class)
@PrepareForTest({DeleteHandler.class, XACMLPapServlet.class})
public class DeleteHandlerTest {
	@Test
	public void testGets() {
		DeleteHandler handler = new DeleteHandler();
		assertNotNull(handler);
		assertEquals(handler.preSafetyCheck(null), true);
		assertNull(handler.getDeletedGroup());
	}
	
	@Test
	public void testGetInstance() {
		DeleteHandler handler = DeleteHandler.getInstance();
		assertNotNull(handler);
	}
	
	@Test
	public void testDeletes() throws Exception {
		// Mock request
		DeleteHandler handler = new DeleteHandler();
		MockHttpServletRequest request = new MockHttpServletRequest();
		request.setBodyContent("{\n\"PAPPolicyType\": \"StdPAPPolicy\"\n}\n");
		
		// Mock servlet
		PAPPolicyEngine engine = Mockito.mock(StdEngine.class);
		PowerMockito.mockStatic(XACMLPapServlet.class);
		when(XACMLPapServlet.getPAPEngine()).thenReturn(engine);
		when(engine.getGroup(any())).thenReturn(null);
		
		// Mock elastic search
		PolicyElasticSearchController controller = Mockito.mock(PolicyElasticSearchController.class);
		PowerMockito.whenNew(PolicyElasticSearchController.class).withNoArguments().thenReturn(controller);
		
		// Mock entity manager
		EntityManager em = Mockito.mock(EntityManager.class);
		
		// Test deletion from PAP
		MockHttpServletResponse response = new MockHttpServletResponse();
		try {
			handler.doAPIDeleteFromPAP(request, response);
		}
		catch (Exception ex) {
			fail("Not expecting an exception: " + ex);
		}
		
		// Test deletion from PDP
		ONAPLoggingContext loggingContext = Mockito.mock(ONAPLoggingContext.class);
		try {
			handler.doAPIDeleteFromPDP(request, response, loggingContext);
		}
		catch (Exception ex) {
			fail("Not expecting an exception: " + ex);
		}
		
		// Test delete entity
		PolicyEntity policyEntity = new PolicyEntity();
		policyEntity.setPolicyName("testVal");
		String result = DeleteHandler.deletePolicyEntityData(em, policyEntity);
		assertEquals(result, "success");
		
		// Test check entity
		Connection con = null;
		List<?> peResult = Collections.emptyList();
		assertEquals(DeleteHandler.checkPolicyGroupEntity(con, peResult), false);
	}
}