|  | <!DOCTYPE html> | 
|  | <meta charset="utf-8"> | 
|  | <title>Canvas's ImageBitmapRenderingContext test</title> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  | <link rel="help" href="https://html.spec.whatwg.org/multipage/canvas.html#the-imagebitmap-rendering-context"> | 
|  | <script> | 
|  | test(function() { | 
|  | var width = 10; | 
|  | var height = 10; | 
|  | var canvas = new OffscreenCanvas(width, height); | 
|  | var ctx = canvas.getContext('bitmaprenderer'); | 
|  | assert_true(ctx instanceof ImageBitmapRenderingContext); | 
|  | assert_true("canvas" in ctx); | 
|  | assert_equals(canvas, ctx.canvas); | 
|  | }, "Test that canvas.getContext('bitmaprenderer') returns an instance of ImageBitmapRenderingContext and ctx.canvas on a ImageBitmapRenderingContext returns the original OffscreenCanvas"); | 
|  |  | 
|  | </script> |