public function testIsImage() { $f = new File($this->container); $this->assertTrue($f->isImage('test.png')); $this->assertTrue($f->isImage('test.jpeg')); $this->assertTrue($f->isImage('test.gif')); $this->assertTrue($f->isImage('test.jpg')); $this->assertTrue($f->isImage('test.JPG')); $this->assertFalse($f->isImage('test.bmp')); $this->assertFalse($f->isImage('test')); $this->assertFalse($f->isImage('test.pdf')); }