TestTimberImage::testImageDeletionByURL PHP Method

    function testImageDeletionByURL()
    {
        $post_id = $this->factory->post->create();
        $filename = self::copyTestImage('flag.png');
        $wp_filetype = wp_check_filetype(basename($filename), null);
        $attachment = array('post_mime_type' => $wp_filetype['type'], 'post_title' => preg_replace('/\\.[^.]+$/', '', basename($filename)), 'post_content' => '', 'post_status' => 'inherit');
        $attach_id = wp_insert_attachment($attachment, $filename, $post_id);
        $data = array();
        $data['size'] = array('width' => 500, 'height' => 300);
        $upload_dir = wp_upload_dir();
        $data['test_image'] = $upload_dir['url'] . '/flag.png';
        $data['crop'] = 'default';
        Timber::compile('assets/image-test.twig', $data);
        $resized_500_file = TimberImageHelper::get_resize_file_path($data['test_image'], $data['size']['width'], $data['size']['height'], $data['crop']);
        $data['size'] = array('width' => 520, 'height' => 250);
        $data['crop'] = 'left';
        Timber::compile('assets/image-test.twig', $data);
        $resized_520_file = TimberImageHelper::get_resize_file_path($data['test_image'], $data['size']['width'], $data['size']['height'], $data['crop']);
        //make sure it generated the sizes we're expecting
        $this->assertFileExists($resized_500_file);
        $this->assertFileExists($resized_520_file);
        //Now delete the "parent" image
        TimberImageHelper::delete_generated_files($data['test_image']);
        //Have the children been deleted as well?
        $this->assertFileNotExists($resized_520_file);
        $this->assertFileNotExists($resized_500_file);
    }