ruta-core/src/test/java/org/apache/uima/ruta/resource/CSVTableTest.java

/*
 * 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.uima.ruta.resource;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.io.IOException;

import org.junit.Test;

public class CSVTableTest {
  private static final String CUSTOM_SEPARATOR = "#|#";

  @Test
  public void testDefaultLookup() throws IOException {
    CSVTable csvTable = new CSVTable(CSVTable.class.getResourceAsStream("test_csvfile.csv"),
            CSVTable.DEFAULT_CSV_SEPARATOR);
    checkValue(csvTable, 0, 0, "this is the first line first column");
    checkValue(csvTable, 0, 1, "ONE");
    checkValue(csvTable, 1, 0, "this is the second line first column");
    checkValue(csvTable, 1, 1, "TWO");
    checkValue(csvTable, 2, 0, "this is the a line with custom");
    checkValue(csvTable, 2, 1, " non default separator used#|#THREE");
  }

  @Test
  public void testDefaultLookupWithEmptyColumn() throws IOException {
    CSVTable csvTable = new CSVTable(CSVTable.class.getResourceAsStream("test_csvfile.csv"),
            CSVTable.DEFAULT_CSV_SEPARATOR);
    checkValue(csvTable, 3, 0, "line with empty column");
    checkValue(csvTable, 3, 1, " "); // spacer added by table implementation
    checkValue(csvTable, 3, 2, "AFTER_EMPTY_COLUMN");
  }

  @Test
  public void testLookupWithCustomSeparator() throws IOException {
    CSVTable csvTable = new CSVTable(CSVTable.class.getResourceAsStream("test_csvfile.csv"),
            CUSTOM_SEPARATOR);
    checkValue(csvTable, 0, 0, "this is the first line first column;ONE");
    checkValue(csvTable, 1, 0, "this is the second line first column;TWO");
    checkValue(csvTable, 2, 0, "this is the a line with custom; non default separator used");
    checkValue(csvTable, 2, 1, "THREE");
  }

  @Test
  public void testLookupWithCustomSeparatorAndEmptyColumn() throws IOException {
    CSVTable csvTable = new CSVTable(CSVTable.class.getResourceAsStream("test_csvfile.csv"),
            CUSTOM_SEPARATOR);
    checkValue(csvTable, 4, 0, "line with empty column custom separator");
    checkValue(csvTable, 4, 1, " "); // spacer added by table implementation
    checkValue(csvTable, 4, 2, "AFTER_EMPTY_COLUMN2");
  }

  private void checkValue(CSVTable table, int row, int column, String expectedValue) {
    String actualValue = table.getEntry(row, column);
    assertThat(actualValue, is(expectedValue));
  }

}