class Twig_Tests_Extension_CoreTest

class Twig_Tests_Extension_CoreTest extends PHPUnit_Framework_TestCase {

  /**
   * @dataProvider getRandomFunctionTestData
   */
  public function testRandomFunction($value, $expectedInArray) {
    for ($i = 0; $i < 100; $i++) {
      $this
        ->assertTrue(in_array(twig_random(new Twig_Environment(), $value), $expectedInArray, true));

      // assertContains() would not consider the type
    }
  }
  public function getRandomFunctionTestData() {
    return array(
      array(
        // array
        array(
          'apple',
          'orange',
          'citrus',
        ),
        array(
          'apple',
          'orange',
          'citrus',
        ),
      ),
      array(
        // Traversable
        new ArrayObject(array(
          'apple',
          'orange',
          'citrus',
        )),
        array(
          'apple',
          'orange',
          'citrus',
        ),
      ),
      array(
        // unicode string
        'Ä€é',
        array(
          'Ä',
          '€',
          'é',
        ),
      ),
      array(
        // numeric but string
        '123',
        array(
          '1',
          '2',
          '3',
        ),
      ),
      array(
        // integer
        5,
        range(0, 5, 1),
      ),
      array(
        // float
        5.9,
        range(0, 5, 1),
      ),
      array(
        // negative
        -2,
        array(
          0,
          -1,
          -2,
        ),
      ),
    );
  }
  public function testRandomFunctionWithoutParameter() {
    $max = mt_getrandmax();
    for ($i = 0; $i < 100; $i++) {
      $val = twig_random(new Twig_Environment());
      $this
        ->assertTrue(is_int($val) && $val >= 0 && $val <= $max);
    }
  }
  public function testRandomFunctionReturnsAsIs() {
    $this
      ->assertSame('', twig_random(new Twig_Environment(), ''));
    $this
      ->assertSame('', twig_random(new Twig_Environment(null, array(
      'charset' => null,
    )), ''));
    $instance = new stdClass();
    $this
      ->assertSame($instance, twig_random(new Twig_Environment(), $instance));
  }

  /**
   * @expectedException Twig_Error_Runtime
   */
  public function testRandomFunctionOfEmptyArrayThrowsException() {
    twig_random(new Twig_Environment(), array());
  }
  public function testRandomFunctionOnNonUTF8String() {
    if (!function_exists('iconv') && !function_exists('mb_convert_encoding')) {
      $this
        ->markTestSkipped('needs iconv or mbstring');
    }
    $twig = new Twig_Environment();
    $twig
      ->setCharset('ISO-8859-1');
    $text = twig_convert_encoding('Äé', 'ISO-8859-1', 'UTF-8');
    for ($i = 0; $i < 30; $i++) {
      $rand = twig_random($twig, $text);
      $this
        ->assertTrue(in_array(twig_convert_encoding($rand, 'UTF-8', 'ISO-8859-1'), array(
        'Ä',
        'é',
      ), true));
    }
  }
  public function testReverseFilterOnNonUTF8String() {
    if (!function_exists('iconv') && !function_exists('mb_convert_encoding')) {
      $this
        ->markTestSkipped('needs iconv or mbstring');
    }
    $twig = new Twig_Environment();
    $twig
      ->setCharset('ISO-8859-1');
    $input = twig_convert_encoding('Äé', 'ISO-8859-1', 'UTF-8');
    $output = twig_convert_encoding(twig_reverse_filter($twig, $input), 'UTF-8', 'ISO-8859-1');
    $this
      ->assertEquals($output, 'éÄ');
  }

}