/*
 * 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.
 */

package org.apache.ambari.server.upgrade;

import static org.easymock.EasyMock.anyObject;
import static org.easymock.EasyMock.capture;
import static org.easymock.EasyMock.eq;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.newCapture;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.reset;
import static org.easymock.EasyMock.verify;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

import javax.persistence.EntityManager;

import org.apache.ambari.server.actionmanager.ActionManager;
import org.apache.ambari.server.configuration.Configuration;
import org.apache.ambari.server.controller.KerberosHelper;
import org.apache.ambari.server.controller.MaintenanceStateHelper;
import org.apache.ambari.server.orm.DBAccessor;
import org.apache.ambari.server.orm.DBAccessor.DBColumnInfo;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Clusters;
import org.apache.ambari.server.state.Config;
import org.apache.ambari.server.state.Service;
import org.apache.ambari.server.state.stack.OsFamily;
import org.easymock.Capture;
import org.easymock.EasyMockRunner;
import org.easymock.Mock;
import org.easymock.MockType;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import com.google.gson.Gson;
import com.google.inject.Binder;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.Provider;

/**
 * {@link org.apache.ambari.server.upgrade.UpgradeCatalog252} unit tests.
 */
@RunWith(EasyMockRunner.class)
public class UpgradeCatalog252Test {

  //  private Injector injector;
  @Mock(type = MockType.STRICT)
  private Provider<EntityManager> entityManagerProvider;

  @Mock(type = MockType.NICE)
  private EntityManager entityManager;

  @Mock(type = MockType.NICE)
  private DBAccessor dbAccessor;

  @Mock(type = MockType.NICE)
  private Configuration configuration;

  @Mock(type = MockType.NICE)
  private Connection connection;

  @Mock(type = MockType.NICE)
  private Statement statement;

  @Mock(type = MockType.NICE)
  private ResultSet resultSet;

  @Mock(type = MockType.NICE)
  private OsFamily osFamily;

  @Mock(type = MockType.NICE)
  private KerberosHelper kerberosHelper;

  @Mock(type = MockType.NICE)
  private ActionManager actionManager;

  @Mock(type = MockType.NICE)
  private Config config;

  @Mock(type = MockType.STRICT)
  private Service service;

  @Mock(type = MockType.NICE)
  private Clusters clusters;

  @Mock(type = MockType.NICE)
  private Cluster cluster;

  @Mock(type = MockType.NICE)
  private Injector injector;

  @Before
  public void init() {
    reset(entityManagerProvider, injector);

    expect(entityManagerProvider.get()).andReturn(entityManager).anyTimes();

    expect(injector.getInstance(Gson.class)).andReturn(null).anyTimes();
    expect(injector.getInstance(MaintenanceStateHelper.class)).andReturn(null).anyTimes();
    expect(injector.getInstance(KerberosHelper.class)).andReturn(kerberosHelper).anyTimes();

    replay(entityManagerProvider, injector);
  }

  @After
  public void tearDown() {
  }

  @Test
  public void testExecuteDDLUpdates() throws Exception {
    Capture<DBColumnInfo> hrcBackgroundColumnCapture = newCapture();
    dbAccessor.addColumn(eq(UpgradeCatalog252.CLUSTERCONFIG_TABLE), capture(hrcBackgroundColumnCapture));

    expect(dbAccessor.getConnection()).andReturn(connection).anyTimes();
    expect(connection.createStatement()).andReturn(statement).anyTimes();
    expect(statement.executeQuery(anyObject(String.class))).andReturn(resultSet).anyTimes();
    expect(configuration.getDatabaseType()).andReturn(Configuration.DatabaseType.POSTGRES).anyTimes();

    replay(dbAccessor, configuration, connection, statement, resultSet);

    Module module = new Module() {
      @Override
      public void configure(Binder binder) {
        binder.bind(DBAccessor.class).toInstance(dbAccessor);
        binder.bind(OsFamily.class).toInstance(osFamily);
        binder.bind(EntityManager.class).toInstance(entityManager);
        binder.bind(Configuration.class).toInstance(configuration);
      }
    };

    Injector injector = Guice.createInjector(module);
    UpgradeCatalog252 upgradeCatalog252 = injector.getInstance(UpgradeCatalog252.class);
    upgradeCatalog252.executeDDLUpdates();

    verify(dbAccessor);

    DBColumnInfo captured = hrcBackgroundColumnCapture.getValue();
    Assert.assertEquals(UpgradeCatalog252.SERVICE_DELETED_COLUMN, captured.getName());
    Assert.assertEquals(0, captured.getDefaultValue());
    Assert.assertEquals(Short.class, captured.getType());
  }
}