/********************************************************************************
 * Copyright (c) 2015-2018 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 ********************************************************************************/

package org.eclipse.mdm.api.base;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyCollection;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.util.Arrays;
import java.util.Collections;

import org.eclipse.mdm.api.base.model.TestStep;
import org.eclipse.mdm.api.base.query.DataAccessException;
import org.junit.Test;

public class BaseEntityManagerTest {

	@Test
	public void loadShouldReturnEntity() throws DataAccessException {

		@SuppressWarnings("unchecked")
		BaseEntityManager entityManager = mock(BaseEntityManager.class);
		TestStep mockedTestStep = mock(TestStep.class);

		when(entityManager.load(any(), anyString())).thenCallRealMethod();
		when(entityManager.load(TestStep.class, Arrays.asList("id1"))).thenReturn(Arrays.asList(mockedTestStep));

		assertThat(entityManager.load(TestStep.class, "id1")).isEqualTo(mockedTestStep);
	}

	@Test
	public void loadNotExistingIdShouldThrowDataAccessException() throws DataAccessException {

		@SuppressWarnings("unchecked")
		BaseEntityManager entityManager = mock(BaseEntityManager.class);

		when(entityManager.load(any(), anyString())).thenCallRealMethod();
		when(entityManager.load(eq(TestStep.class), anyCollection())).thenReturn(Collections.<TestStep>emptyList());

		assertThatThrownBy(() -> entityManager.load(TestStep.class, "xyz")).isInstanceOf(DataAccessException.class)
				.hasMessageContaining("Failed to load entity by instance ID.");
	}

	@Test
	public void loadNotUniqueIdShouldThrowDataAccessException() throws DataAccessException {

		@SuppressWarnings("unchecked")
		BaseEntityManager entityManager = mock(BaseEntityManager.class);
		TestStep mockedTestStep1 = mock(TestStep.class);
		TestStep mockedTestStep2 = mock(TestStep.class);

		when(entityManager.load(any(), anyString())).thenCallRealMethod();
		when(entityManager.load(TestStep.class, Arrays.asList("id1")))
				.thenReturn(Arrays.asList(mockedTestStep1, mockedTestStep2));

		assertThatThrownBy(() -> entityManager.load(TestStep.class, "id1")).isInstanceOf(DataAccessException.class)
				.hasMessageContaining("Failed to load entity by instance ID.");
	}
}