| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> |
| <title>OffscreenCanvas test: 2d.gradient.object.return</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/html/canvas/resources/canvas-tests.js"></script> |
| |
| <h1>2d.gradient.object.return</h1> |
| <p class="desc">createLinearGradient() and createRadialGradient() returns objects implementing CanvasGradient</p> |
| |
| |
| <script> |
| var t = async_test("createLinearGradient() and createRadialGradient() returns objects implementing CanvasGradient"); |
| 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'); |
| |
| window.CanvasGradient.prototype.thisImplementsCanvasGradient = true; |
| |
| var g1 = ctx.createLinearGradient(0, 0, 100, 0); |
| _assertDifferent(g1.addColorStop, undefined, "g1.addColorStop", "undefined"); |
| _assertSame(g1.thisImplementsCanvasGradient, true, "g1.thisImplementsCanvasGradient", "true"); |
| |
| var g2 = ctx.createRadialGradient(0, 0, 10, 0, 0, 20); |
| _assertDifferent(g2.addColorStop, undefined, "g2.addColorStop", "undefined"); |
| _assertSame(g2.thisImplementsCanvasGradient, true, "g2.thisImplementsCanvasGradient", "true"); |
| t.done(); |
| |
| }); |
| </script> |