test_anonymousContent_canvas.html (1788B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=1212477 5 --> 6 <meta charset="utf-8"> 7 <title>Test for Bug 1212477 - Needs a way to access to <canvas>'s context (2d, webgl) from Anonymous Content API</title> 8 <script src="/tests/SimpleTest/SimpleTest.js"></script> 9 <link rel="stylesheet" href="/tests/SimpleTest/test.css"/> 10 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1212477">Mozilla Bug 1212477</a> 11 <div> 12 <div id="id" class="test">text content</div> 13 <canvas id="canvas2d"></canvas> 14 <canvas id="canvas-webgl"></canvas> 15 <canvas id="canvas-foo"></canvas> 16 </div> 17 <script> 18 let chromeDocument = SpecialPowers.wrap(document); 19 let testElement = document.querySelector("div"); 20 21 let anonymousContent = chromeDocument.insertAnonymousContent(); 22 anonymousContent.root.appendChild(testElement.cloneNode(true)); 23 24 let canvas2d = anonymousContent.root.getElementById("canvas2d"); 25 let context2d = canvas2d.getContext("2d"); 26 27 is(context2d.toString(), "[object CanvasRenderingContext2D]", 28 "2D Context is returned properly"); 29 30 is(context2d.canvas, null, "context's canvas property"); 31 32 is(anonymousContent.root.getElementById("canvas-foo").getContext("foo"), 33 null, 34 "Context is null for unknown context type"); 35 36 const normalWebGL = document.createElement('canvas').getContext('webgl'); 37 if (normalWebGL) { 38 let canvasWebGL = anonymousContent.root.getElementById("canvas-webgl"); 39 let webgl = canvasWebGL.getContext("webgl"); 40 41 is(webgl.toString(), "[object WebGLRenderingContext]", 42 "WebGL Context is returned properly"); 43 44 is(webgl.canvas, null, 45 "WebGL context's canvas property is null in anonymous content"); 46 } 47 chromeDocument.removeAnonymousContent(anonymousContent); 48 </script>