30 lines
1.1 KiB
HTML
30 lines
1.1 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<body>
|
|
<script src="../../resources/js-test-pre.js"></script>
|
|
<script>
|
|
description("Test the behavior when assigning null to context.globalCompositeOperation");
|
|
|
|
var canvas = document.createElement("canvas");
|
|
canvas.width = 200;
|
|
canvas.height = 200;
|
|
var context = canvas.getContext("2d");
|
|
// Initial operation should be "source-over".
|
|
shouldBeEqualToString("context.globalCompositeOperation", "source-over");
|
|
|
|
// Setting to 'copy' should work as this is a valid operation.
|
|
shouldNotThrow("context.globalCompositeOperation = 'copy'");
|
|
shouldBeEqualToString("context.globalCompositeOperation", "copy");
|
|
|
|
// Assignment to null should be ignored because "null" is not a valid operation.
|
|
shouldNotThrow("context.globalCompositeOperation = null");
|
|
shouldBeEqualToString("context.globalCompositeOperation", "copy");
|
|
|
|
// Assignment to "" should be ignored because "" is not a valid operation.
|
|
shouldNotThrow("context.globalCompositeOperation = ''");
|
|
shouldBeEqualToString("context.globalCompositeOperation", "copy");
|
|
</script>
|
|
<script src="../../resources/js-test-post.js"></script>
|
|
</body>
|
|
</html>
|