diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html new file mode 100644 index 0000000000..aa6073eedf --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.object.clamp.html @@ -0,0 +1,55 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>OffscreenCanvas test: 2d.imageData.object.clamp</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.object.clamp</h1> +<p class="desc">ImageData.data clamps numbers to [0, 255]</p> + + +<script> +var t = async_test("ImageData.data clamps numbers to [0, 255]"); +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.getImageData(0, 0, 10, 10); + + imgdata.data[0] = 100; + imgdata.data[0] = 300; + _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255"); + imgdata.data[0] = 100; + imgdata.data[0] = -100; + _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); + + imgdata.data[0] = 100; + imgdata.data[0] = 200+Math.pow(2, 32); + _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255"); + imgdata.data[0] = 100; + imgdata.data[0] = -200-Math.pow(2, 32); + _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); + + imgdata.data[0] = 100; + imgdata.data[0] = Math.pow(10, 39); + _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255"); + imgdata.data[0] = 100; + imgdata.data[0] = -Math.pow(10, 39); + _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); + + imgdata.data[0] = 100; + imgdata.data[0] = -Infinity; + _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); + imgdata.data[0] = 100; + imgdata.data[0] = Infinity; + _assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255"); + t.done(); + +}); +</script> |