Import wpt@5915964199b07226bf6d8fbb177a63b1f272907a

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

+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.imageData.put.unchanged
+// Description:putImageData(getImageData(...), ...) has no effect
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("putImageData(getImageData(...), ...) has no effect");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+var i = 0;
+for (var y = 0; y < 16; ++y) {
+    for (var x = 0; x < 16; ++x, ++i) {
+        ctx.fillStyle = 'rgba(' + i + ',' + (Math.floor(i*1.5) % 256) + ',' + (Math.floor(i*23.3) % 256) + ',' + (i/256) + ')';
+        ctx.fillRect(x, y, 1, 1);
+    }
+}
+var imgdata1 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
+var olddata = [];
+for (var i = 0; i < imgdata1.data.length; ++i)
+    olddata[i] = imgdata1.data[i];
+ctx.putImageData(imgdata1, 0.1, 0.2);
+var imgdata2 = ctx.getImageData(0.1, 0.2, 15.8, 15.9);
+for (var i = 0; i < imgdata2.data.length; ++i) {
+    _assertSame(olddata[i], imgdata2.data[i], "olddata[\""+(i)+"\"]", "imgdata2.data[\""+(i)+"\"]");
+}
+
+t.done();
+
+});
+done();