32 lines
1.3 KiB
Plaintext
32 lines
1.3 KiB
Plaintext
gtk-reftest is a new test runner supposed to do a lot of generic tests.
|
|
Run it like this:
|
|
|
|
./gtk-reftest [OPTIONS] TESTFILE [TESTFILES...]
|
|
|
|
where FILE is a GtkBuilder ui file to run.
|
|
|
|
For a general test named "test", you want to have the following files:
|
|
1) test.ui
|
|
2) test.ref.ui
|
|
3) test.css (optional)
|
|
The test will then check that test.ui and test.ref.ui are rendered
|
|
identically with the provided css.
|
|
|
|
In detail, for every provided TESTFILE the test runner will:
|
|
1) Add the css to the default screen
|
|
2) Load the test.ui file and the test.ref.ui file
|
|
3) Grab the first GtkWindow subclass widget
|
|
4) gtk_widget_show() it and take a snapshot image of its contents into
|
|
a cairo surface.
|
|
5) Compare the two images to be bitwise identical. If they are not, a
|
|
diff image will be created hilighting the differences.
|
|
6) Save the images as png files to the output directory named:
|
|
- test.out.png (rendering of test.ui)
|
|
- test.ref.png (rendering of test.ref.ui)
|
|
- test.diff.png (optional, differences from step 5)
|
|
7) Fail the test if the two images are not bitwise identical
|
|
|
|
Credit for the idea of reftests goes to Mozilla and in particular David
|
|
Baron. For a larger introduction of why reftests are useful, see
|
|
http://weblogs.mozillazine.org/roc/archives/2008/12/reftests.html
|