public function testMinify()
{
$this->assertStringEqualsFile($this->filePath . '/minify-expected.css', Css::minify(file_get_contents($this->filePath . '/minify.css')));
// Color conversion
$this->assertEquals('background:url(\'image.png\') #000 top left;color:#999;border:solid 1px #cfc', Css::minify('background: url( \'image.png\' ) #000000 top left; color: #999999; border: solid 1px #ccffcc;'));
}