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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /layout/generic/test/test_bug1803209.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/generic/test/test_bug1803209.html')
| -rw-r--r-- | layout/generic/test/test_bug1803209.html | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/layout/generic/test/test_bug1803209.html b/layout/generic/test/test_bug1803209.html new file mode 100644 index 0000000000..6e7ed220da --- /dev/null +++ b/layout/generic/test/test_bug1803209.html @@ -0,0 +1,59 @@ +<!DOCTYPE HTML> +<html> +<head> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <script src="/tests/SimpleTest/EventUtils.js"></script> + <link rel="stylesheet" href="/tests/SimpleTest/test.css"/> +</head> +<body> + + +<style> +.box { + background: linear-gradient(90deg, rgba(256,0,0,1), rgba(256,0,0,1)); + background-attachment: fixed; + width: 25%; + height: 450px; +} +</style> + +<div style="height: 1000vh;"></div> +<div class="box"></div> + + + +<script> +SimpleTest.waitForExplicitFinish(); + +add_task(async function() { + let utils = SpecialPowers.DOMWindowUtils; + + let sc = document.getElementById("sc"); + let boundingClientRect = document.documentElement.getBoundingClientRect(); + + let canvas = document.createElement("canvas"); + canvas.setAttribute("width", boundingClientRect.width); + canvas.setAttribute("height", boundingClientRect.height); + let ctx = canvas.getContext("2d"); + + let rect = new window.DOMRect(boundingClientRect.x, boundingClientRect.y, + boundingClientRect.width, + boundingClientRect.height); + + let image = await SpecialPowers.snapshotContext(window, rect, "rgb(255,255,255)"); + + SpecialPowers.wrap(ctx).drawImage(image, 0, 0); + + var data = ctx.getImageData(0, 0, boundingClientRect.width, boundingClientRect.height).data; + var foundRed = false; + for (var i = 0; i < data.length; i+=4) { + if (data[i] == 255 && data[i+1] == 0 && data[i+2] == 0 && data[i+3] == 255) { + foundRed = true; + break; + } + } + ok(foundRed, "found some red pixels"); +}); +</script> +</body> +</html> |