DiffTest.php

<?php

/**
 * PHPUnit
 *
 * Copyright (c) 2001-2013, Sebastian Bergmann <sebastian@phpunit.de>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *   * Neither the name of Sebastian Bergmann nor the names of his
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package    PHPUnit
 * @author     Sebastian Bergmann <sebastian@phpunit.de>
 * @copyright  2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.phpunit.de/
 * @since      File available since Release 3.6.0
 */

/**
 *
 *
 * @package    PHPUnit
 * @author     Sebastian Bergmann <sebastian@phpunit.de>
 * @copyright  2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
 * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
 * @link       http://www.phpunit.de/
 * @since      Class available since Release 3.6.0
 */
class Util_DiffTest extends PHPUnit_Framework_TestCase {
  const REMOVED = 2;
  const ADDED = 1;
  const OLD = 0;

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorMessage() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-a\n+b\n", PHPUnit_Util_Diff::diff('a', 'b'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorMessage_toArray() {
    $diff = array();
    $diff[] = array(
      'a',
      self::REMOVED,
    );
    $diff[] = array(
      'b',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('a', 'b'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorStartSame() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-ba\n+bc\n", PHPUnit_Util_Diff::diff('ba', 'bc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorStartSame_toArray() {
    $diff = array();
    $diff[] = array(
      'ba',
      self::REMOVED,
    );
    $diff[] = array(
      'bc',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('ba', 'bc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorEndSame() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-ab\n+cb\n", PHPUnit_Util_Diff::diff('ab', 'cb'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorEndSame_toArray() {
    $diff = array();
    $diff[] = array(
      'ab',
      self::REMOVED,
    );
    $diff[] = array(
      'cb',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('ab', 'cb'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorStartAndEndSame() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-abc\n+adc\n", PHPUnit_Util_Diff::diff('abc', 'adc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorStartAndEndSame_toArray() {
    $diff = array();
    $diff[] = array(
      'abc',
      self::REMOVED,
    );
    $diff[] = array(
      'adc',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('abc', 'adc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorStartSameComplete() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-ab\n+abc\n", PHPUnit_Util_Diff::diff('ab', 'abc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorStartSameComplete_toArray() {
    $diff = array();
    $diff[] = array(
      'ab',
      self::REMOVED,
    );
    $diff[] = array(
      'abc',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('ab', 'abc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorEndSameComplete() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-bc\n+abc\n", PHPUnit_Util_Diff::diff('bc', 'abc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorEndSameComplete_toArray() {
    $diff = array();
    $diff[] = array(
      'bc',
      self::REMOVED,
    );
    $diff[] = array(
      'abc',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('bc', 'abc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorOverlapingMatches() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-abc\n+abbc\n", PHPUnit_Util_Diff::diff('abc', 'abbc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorOverlapingMatches_toArray() {
    $diff = array();
    $diff[] = array(
      'abc',
      self::REMOVED,
    );
    $diff[] = array(
      'abbc',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('abc', 'abbc'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diff
   */
  public function testComparisonErrorOverlapingMatches2() {
    $this
      ->assertEquals("--- Expected\n+++ Actual\n@@ @@\n-abcdde\n+abcde\n", PHPUnit_Util_Diff::diff('abcdde', 'abcde'));
  }

  /**
   * @covers PHPUnit_Util_Diff::diffToArray
   */
  public function testComparisonErrorOverlapingMatches2_toArray() {
    $diff = array();
    $diff[] = array(
      'abcdde',
      self::REMOVED,
    );
    $diff[] = array(
      'abcde',
      self::ADDED,
    );
    $this
      ->assertEquals($diff, PHPUnit_Util_Diff::diffToArray('abcdde', 'abcde'));
  }

}