Import wpt@5915964199b07226bf6d8fbb177a63b1f272907a

third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/transformations/2d.transformation.rotate.wrap.worker.js

Index: third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/transformations/2d.transformation.rotate.wrap.worker.js
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/transformations/2d.transformation.rotate.wrap.worker.js b/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/transformations/2d.transformation.rotate.wrap.worker.js
new file mode 100644
index 0000000000000000000000000000000000000000..5a7a413a62c472677176f1b9fe68e39942d1fafd
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/imported/wpt/offscreen-canvas/transformations/2d.transformation.rotate.wrap.worker.js
@@ -0,0 +1,30 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.transformation.rotate.wrap
+// Description:rotate() wraps large positive values correctly
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("rotate() wraps large positive values correctly");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.rotate(Math.PI * (1 + 4096)); // == pi (mod 2*pi)
+// We need about pi +/- 0.001 in order to get correct-looking results
+// 32-bit floats can store pi*4097 with precision 2^-10, so that should
+// be safe enough on reasonable implementations
+ctx.fillStyle = '#0f0';
+ctx.fillRect(-100, -50, 100, 50);
+_assertPixel(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
+_assertPixel(offscreenCanvas, 98,2, 0,255,0,255, "98,2", "0,255,0,255");
+_assertPixel(offscreenCanvas, 98,47, 0,255,0,255, "98,47", "0,255,0,255");
+
+t.done();
+
+});
+done();