/*
 * 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.phoenix.end2end;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

@Category(ParallelStatsDisabledTest.class)
public class UpperLowerFunctionIT extends ParallelStatsDisabledIT {
  private static String tableName = generateUniqueName();
  private static String firstName = "Joe";
  private static String lastName = "Smith";

  @BeforeClass
  public static synchronized void init() throws SQLException {
    Connection conn = DriverManager.getConnection(getUrl());
    String ddl = "CREATE TABLE " + tableName + " (" + "id INTEGER PRIMARY KEY,"
      + "first_name VARCHAR," + "last_name VARCHAR" + ")";
    conn.createStatement().execute(ddl);
    String dml = String.format("UPSERT INTO %s VALUES(" + "1, '%s', '%s'" + ")", tableName,
      firstName, lastName);
    PreparedStatement stmt = conn.prepareStatement(dml);
    stmt.execute();
    conn.commit();
  }

  @Test
  public void testWhereLower() throws SQLException {
    Connection conn = DriverManager.getConnection(getUrl());

    ResultSet rs;
    rs = conn.createStatement()
      .executeQuery(String.format("SELECT first_name, last_name FROM %s WHERE"
        + " LOWER(first_name || ' ' || last_name)" + " = '%s %s'", tableName,
        firstName.toLowerCase(), lastName.toLowerCase()));
    assertTrue(rs.next());
    assertEquals(firstName, rs.getString(1));
    assertEquals(lastName, rs.getString(2));
    assertFalse(rs.next());
  }

  @Test
  public void testSelectLower() throws SQLException {
    Connection conn = DriverManager.getConnection(getUrl());

    ResultSet rs;
    rs = conn.createStatement().executeQuery(String
      .format("SELECT LOWER(first_name || ' ' || last_name) FROM %s WHERE" + " id = 1", tableName));
    assertTrue(rs.next());
    String expected = String.format("%s %s", firstName.toLowerCase(), lastName.toLowerCase());
    assertEquals(expected, rs.getString(1));
    assertFalse(rs.next());
  }

  @Test
  public void testWhereUpper() throws SQLException {
    Connection conn = DriverManager.getConnection(getUrl());

    ResultSet rs;
    rs = conn.createStatement()
      .executeQuery(String.format("SELECT first_name, last_name FROM %s WHERE"
        + " UPPER(first_name || ' ' || last_name)" + " = '%s %s'", tableName,
        firstName.toUpperCase(), lastName.toUpperCase()));
    assertTrue(rs.next());
    assertEquals(firstName, rs.getString(1));
    assertEquals(lastName, rs.getString(2));
    assertFalse(rs.next());
  }

  @Test
  public void testSelectUpper() throws SQLException {
    Connection conn = DriverManager.getConnection(getUrl());

    ResultSet rs;
    rs = conn.createStatement().executeQuery(String
      .format("SELECT UPPER(first_name || ' ' || last_name) FROM %s WHERE" + " id = 1", tableName));
    assertTrue(rs.next());
    String expected = String.format("%s %s", firstName.toUpperCase(), lastName.toUpperCase());
    assertEquals(expected, rs.getString(1));
    assertFalse(rs.next());
  }
}
