content: /*
   * Created on Jan 28, 2011
   *
   * Licensed 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.
   *
   * Copyright @2011-2012 the original author or authors.
   */
  package org.fest.assertions.internal;
  
  import static junit.framework.Assert.assertEquals;
  import static org.fest.assertions.test.TextFileWriter.write;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.charset.Charset;
  
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  /**
   * Tests for {@link FileContentComparator#compareContents(File, File, Charset)}.
   *
   * @author Yvonne Wang
   * @author Alex Ruiz
   */
  public class FileContentComparator_compareContents_Test {
    @Rule
    public TemporaryFolder folder = new TemporaryFolder();
  
    private Charset charset;
    private File actual;
    private File expected;
    private FileContentComparator comparator;
  
    @Before
    public void setUp() throws IOException {
      charset = Charset.forName("UTF-8");
      actual = folder.newFile("actual.txt");
      expected = folder.newFile("expected.txt");
      comparator = new FileContentComparator();
    }
  
    @Test
    public void should_return_empty_diff_list_if_files_have_equal_content() throws IOException {
      write("line0", "line1").using(charset).to(actual);
      write("line0", "line1").using(charset).to(expected);
      FileDiffs diffs = comparator.compareContents(actual, expected, charset);
      assertEquals(0, diffs.size());
    }
  
    @Test
    public void should_return_diffs_if_files_do_not_have_equal_content() throws IOException {
      write("line_0", "line_1").using(charset).to(actual);
      write("line0", "line1").using(charset).to(expected);
      FileDiffs diffs = comparator.compareContents(actual, expected, charset);
      assertEquals(2, diffs.size());
      assertEquals("line:<0>, expected:<'line0'> but was:<'line_0'>", diffs.get(0));
      assertEquals("line:<1>, expected:<'line1'> but was:<'line_1'>", diffs.get(1));
    }
  
    @Test
    public void should_return_diffs_if_content_of_actual_is_shorter_than_content_of_expected() throws IOException {
      write("line_0").using(charset).to(actual);
      write("line_0", "line_1").using(charset).to(expected);
      FileDiffs diffs = comparator.compareContents(actual, expected, charset);
      assertEquals(1, diffs.size());
      assertEquals("line:<1>, expected:<'line_1'> but was:<EOF>", diffs.get(0));
    }
  
    @Test
    public void should_return_diffs_if_content_of_actual_is_longer_than_content_of_expected() throws IOException {
      write("line_0", "line_1").using(charset).to(actual);
      write("line_0").using(charset).to(expected);
      FileDiffs diffs = comparator.compareContents(actual, expected, charset);
      assertEquals(1, diffs.size());
      assertEquals("line:<1>, expected:<EOF> but was:<'line_1'>", diffs.get(0));
    }
  }
  