Import wpt@5915964199b07226bf6d8fbb177a63b1f272907a

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/pixel-manipulation/2d.imageData.object.round.worker.js

+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.object.round
+// Description:ImageData.data rounds numbers with round-to-zero
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("ImageData.data rounds numbers with round-to-zero");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+var imgdata = ctx.getImageData(0, 0, 10, 10);
+imgdata.data[0] = 0.499;
+_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+imgdata.data[0] = 0.5;
+_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+imgdata.data[0] = 0.501;
+_assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1");
+imgdata.data[0] = 1.499;
+_assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1");
+imgdata.data[0] = 1.5;
+_assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
+imgdata.data[0] = 1.501;
+_assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
+imgdata.data[0] = 2.5;
+_assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
+imgdata.data[0] = 3.5;
+_assertSame(imgdata.data[0], 4, "imgdata.data[\""+(0)+"\"]", "4");
+imgdata.data[0] = 252.5;
+_assertSame(imgdata.data[0], 252, "imgdata.data[\""+(0)+"\"]", "252");
+imgdata.data[0] = 253.5;
+_assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254");
+imgdata.data[0] = 254.5;
+_assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254");
+imgdata.data[0] = 256.5;
+_assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
+imgdata.data[0] = -0.5;
+_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+imgdata.data[0] = -1.5;
+_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
+
+t.done();
+
+});
+done();