public function testExtract()
{
$favicon = new Favicon();
$html = '<!DOCTYPE html><html><head>
<link rel="icon" href="http://example.com/myicon.ico" />
</head><body><p>boo</p></body></html>';
$this->assertEquals(array('http://example.com/myicon.ico'), $favicon->extract($html));
// multiple values in rel attribute
$html = '<!DOCTYPE html><html><head>
<link rel="shortcut icon" href="http://example.com/myicon.ico" />
</head><body><p>boo</p></body></html>';
$this->assertEquals(array('http://example.com/myicon.ico'), $favicon->extract($html));
// icon part of another string
$html = '<!DOCTYPE html><html><head>
<link rel="fluid-icon" href="http://example.com/myicon.ico" />
</head><body><p>boo</p></body></html>';
$this->assertEquals(array('http://example.com/myicon.ico'), $favicon->extract($html));
// with other attributes present
$html = '<!DOCTYPE html><html><head>
<link rel="icon" type="image/vnd.microsoft.icon" href="http://example.com/image.ico" />
</head><body><p>boo</p></body></html>';
$this->assertEquals(array('http://example.com/image.ico'), $favicon->extract($html));
// ignore icon in other attribute
$html = '<!DOCTYPE html><html><head>
<link type="icon" href="http://example.com/image.ico" />
</head><body><p>boo</p></body></html>';
// ignores apple icon
$html = '<!DOCTYPE html><html><head>
<link rel="apple-touch-icon" href="assets/img/touch-icon-iphone.png">
<link rel="icon" type="image/png" href="http://example.com/image.png" />
</head><body><p>boo</p></body></html>';
$this->assertEquals(array('http://example.com/image.png'), $favicon->extract($html));
// allows multiple icons
$html = '<!DOCTYPE html><html><head>
<link rel="icon" type="image/png" href="http://example.com/image.png" />
<link rel="icon" type="image/x-icon" href="http://example.com/image.ico"/>
</head><body><p>boo</p></body></html>';
$this->assertEquals(array('http://example.com/image.png', 'http://example.com/image.ico'), $favicon->extract($html));
// empty array with broken html
$html = '!DOCTYPE html html head
link rel="icon" type="image/png" href="http://example.com/image.png" /
link rel="icon" type="image/x-icon" href="http://example.com/image.ico"/
/head body /p boo /p body /html';
$this->assertEquals(array(), $favicon->extract($html));
// empty array on no input
$this->assertEquals(array(), $favicon->extract(''));
// empty array on no icon found
$html = '<!DOCTYPE html><html><head>
</head><body><p>boo</p></body></html>';
$this->assertEquals(array(), $favicon->extract($html));
}
