textimage_preg_match.test in Textimage 7.3

Textimage - unit test case script.

File

tests/textimage_preg_match.test

<?php

/**
 * @file
 * Textimage - unit test case script.
 */

/**
 * Checks that drupal_preg_match() function works as expected.
 */
class TextimagePregMatchTestCase extends DrupalUnitTestCase {

  /**
   * Get info.
   */
  public static function getInfo() {
    return array(
      'name' => 'UTF-8 character-based variant of preg_match()',
      'description' => 'Unit tests for the UTF-8 character-based wrapper of the preg_match() function.',
      'group' => 'Textimage',
    );
  }

  /**
   * Sets up unit test environment.
   *
   * Includes the file with drupal_preg_match() function.
   */
  protected function setUp() {
    parent::setUp();
    module_load_include('inc', 'textimage', 'effects/textimage_text');
  }

  /**
   * Performs the tests for the offset argument.
   */
  public function testOffsetArgument() {
    $matches = array();

    // Character 'п' is 2 bytes long and preg_match() would start from the
    // second 'п' character and not from the first 'z'.
    $result = drupal_preg_match('/п/u', 'ппzz', $matches, NULL, 2);
    $this
      ->assertFalse($result, t('String was skipped using character-based offset.'));

    // Again, character 'п' is 2 bytes long and we skip 1 character, so
    // preg_match() would fail, because the string with byte offset 1 is not a
    // valid UTF-8 string.
    $result = drupal_preg_match('/.*$/u', 'пzz', $matches, NULL, 1);
    $this
      ->assertTrue($result && $matches[0] === 'zz', t('String was matched using character-based offset.'));
  }

  /**
   * Performs the tests for the captured offset.
   */
  public function testCapturedOffset() {
    $matches = array();

    // Character 'п' is 2 bytes long and non-unicode preg_match would return
    // 2 here.
    $result = drupal_preg_match('/z/u', 'пz', $matches, PREG_OFFSET_CAPTURE);
    $this
      ->assertTrue($result && $matches[0][1] === 1, t('Returned offset is character-based.'));
  }

}

Classes

Name	Description
TextimagePregMatchTestCase	Checks that drupal_preg_match() function works as expected.