/*
    * 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.shardingsphere.infra.database.postgresql.checker;
  
  import org.apache.shardingsphere.infra.database.core.checker.PrivilegeCheckType;
  import org.apache.shardingsphere.infra.database.core.exception.MissingRequiredPrivilegeException;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import javax.sql.DataSource;
  import java.sql.Connection;
  import java.sql.DatabaseMetaData;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.ArgumentMatchers.anyString;
  import static org.mockito.Mockito.atLeastOnce;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  class PostgreSQLDatabasePrivilegeCheckerTest {
      
      @Mock
      private DataSource dataSource;
      
      @Mock
      private Connection connection;
      
      @Mock
      private DatabaseMetaData metaData;
      
      @Mock
      private PreparedStatement preparedStatement;
      
      @Mock
      private ResultSet resultSet;
      
      @BeforeEach
      void setUp() throws SQLException {
          when(dataSource.getConnection()).thenReturn(connection);
          when(connection.getMetaData()).thenReturn(metaData);
          when(metaData.getUserName()).thenReturn("postgres");
          when(connection.prepareStatement(anyString())).thenReturn(preparedStatement);
          when(preparedStatement.executeQuery()).thenReturn(resultSet);
          when(resultSet.next()).thenReturn(true, false);
      }
      
      @Test
      void assertCheckRolReplication() throws SQLException {
          PostgreSQLDatabasePrivilegeChecker dataSourceChecker = new PostgreSQLDatabasePrivilegeChecker();
          when(resultSet.getString("rolreplication")).thenReturn("t");
          when(resultSet.getString("rolsuper")).thenReturn("f");
          dataSourceChecker.check(dataSource, PrivilegeCheckType.PIPELINE);
          verify(resultSet, atLeastOnce()).getString("rolsuper");
      }
      
      @Test
      void assertCheckRolSuper() throws SQLException {
          PostgreSQLDatabasePrivilegeChecker dataSourceChecker = new PostgreSQLDatabasePrivilegeChecker();
          when(resultSet.getString("rolsuper")).thenReturn("t");
          when(resultSet.getString("rolreplication")).thenReturn("f");
          dataSourceChecker.check(dataSource, PrivilegeCheckType.PIPELINE);
          verify(resultSet, atLeastOnce()).getString("rolreplication");
      }
      
      @Test
      void assertCheckNoPrivilege() throws SQLException {
          PostgreSQLDatabasePrivilegeChecker dataSourceChecker = new PostgreSQLDatabasePrivilegeChecker();
          when(resultSet.getString("rolsuper")).thenReturn("f");
          when(resultSet.getString("rolreplication")).thenReturn("f");
          assertThrows(MissingRequiredPrivilegeException.class, () -> dataSourceChecker.check(dataSource, PrivilegeCheckType.PIPELINE));
          verify(resultSet, atLeastOnce()).getString("rolreplication");
      }
  }