diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html new file mode 100644 index 0000000000..75b8f737fd --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.create2.large.html @@ -0,0 +1,35 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>OffscreenCanvas test: 2d.imageData.create2.large</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> + +<h1>2d.imageData.create2.large</h1> +<p class="desc">createImageData(sw, sh) works for sizes much larger than the canvas</p> + + +<script> +var t = async_test("createImageData(sw, sh) works for sizes much larger than the canvas"); +var t_pass = t.done.bind(t); +var t_fail = t.step_func(function(reason) { + throw reason; +}); +t.step(function() { + + var canvas = new OffscreenCanvas(100, 50); + var ctx = canvas.getContext('2d'); + + var imgdata = ctx.createImageData(1000, 2000); + _assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4"); + _assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height"); + _assert(imgdata.width > 0, "imgdata.width > 0"); + var isTransparentBlack = true; + for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling) + if (imgdata.data[i] !== 0) + isTransparentBlack = false; + _assert(isTransparentBlack, "isTransparentBlack"); + t.done(); + +}); +</script> |