/**
 * 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.drill.exec.store.text;

import java.util.List;

import org.apache.drill.BaseTestQuery;
import org.apache.drill.exec.rpc.user.QueryDataBatch;
import org.junit.Test;
import static org.junit.Assert.*;

public class TestTextColumn extends BaseTestQuery {

  static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(TestTextColumn.class);

  @Test
  public void testCsvColumnSelection() throws Exception {
    test("select columns[0] as region_id, columns[1] as country from dfs_test.`[WORKING_PATH]/src/test/resources/store/text/data/regions.csv`");
  }

  @Test
  public void testDefaultDelimiterColumnSelection() throws Exception {
    List<QueryDataBatch> actualResults = testSqlWithResults("SELECT columns[0] as entire_row "
        + "from dfs_test.`[WORKING_PATH]/src/test/resources/store/text/data/letters.txt`");

    final TestResultSet expectedResultSet = new TestResultSet();
    expectedResultSet.addRow("a, b,\",\"c\",\"d,, \\n e");
    expectedResultSet.addRow("d, e,\",\"f\",\"g,, \\n h");
    expectedResultSet.addRow("g, h,\",\"i\",\"j,, \\n k");

    TestResultSet actualResultSet = new TestResultSet(actualResults);
    assertTrue(expectedResultSet.equals(actualResultSet));
  }

  @Test
  public void testCsvColumnSelectionCommasInsideQuotes() throws Exception {
    List<QueryDataBatch> actualResults = testSqlWithResults("SELECT columns[0] as col1, columns[1] as col2, columns[2] as col3,"
        + "columns[3] as col4 from dfs_test.`[WORKING_PATH]/src/test/resources/store/text/data/letters.csv`");

    final TestResultSet expectedResultSet = new TestResultSet();
    expectedResultSet.addRow("a, b,", "c", "d,, \\n e", "f\\\"g");
    expectedResultSet.addRow("d, e,", "f", "g,, \\n h", "i\\\"j");
    expectedResultSet.addRow("g, h,", "i", "j,, \\n k", "l\\\"m");

    TestResultSet actualResultSet = new TestResultSet(actualResults);
    assertTrue(expectedResultSet.equals(actualResultSet));
  }
}