function testIsImage() { $this->assertTrue(Scaffold_Utils::is_image('path/to/file.png')); $this->assertTrue(Scaffold_Utils::is_image('path/to/file.jpg')); $this->assertTrue(Scaffold_Utils::is_image('path/to/file.jpeg')); $this->assertTrue(Scaffold_Utils::is_image('path/to/file.gif')); $this->assertFalse(Scaffold_Utils::is_image('path/to/file.css')); }