function test_blank_attr_does_not_match_zero()
 {
     $expectation = new ContainsTagWithAttribute('span', 'class', '');
     $this->assertFalse($expectation->test('<span class="0">message</span>'));
 }
 function test_garbage()
 {
     $expectation = new ContainsTagWithAttribute('a', 'href', '!#@*%@_-)(*#0-735\\fdf//fdfg235-0970}$@}{#:~');
     $this->assertTrue($expectation->test('<a href="!#@*%@_-)(*#0-735\\fdf//fdfg235-0970}$@}{#:~">Click Here</a>'));
 }