Assertions with gdk-pixbuf support

## Assertions with gdk-pixbuf support Assertions with gdk-pixbuf support — Checks that your program works as you expect with gdk-pixbuf support. |

## Synopsis

    void                gdkcut_pixbuf_assert_equal          (const GdkPixbuf *expected,
                                                             const GdkPixbuf *actual,
                                                             guint threshold,
                                                             ...);

## Description

## Details

### gdkcut_pixbuf_assert_equal ()

    void                gdkcut_pixbuf_assert_equal          (const GdkPixbuf *expected,
                                                             const GdkPixbuf *actual,
                                                             guint threshold,
                                                             ...);

Passes if `expected` == `actual`. If difference of each corresponding pixel value is within threshold, `expected` and `actual` are treated as equal image.

If threshold is 3, pixel value of `expected` at (1, 1) is 127 and pixel value of `actual` at (1, 1) is 131, `actual` doesn't equals to `expected`. If pixel value of `actual` at (1, 1) is 130, `actual` may equal to `expected`. (All other corresponding pixel values are needed to fill this condition.)

`expected` : | an expected GdkPixbuf.
`actual` : | an actual GdkPixbuf.
`threshold` : | an threshold used for detecting pixel difference.
`...` : | optional message. See `cut_message()` for details.

Since 1.0.5