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Allow multiple renders to occur simultaneously
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Niklas von Hertzen
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Dec 24, 2014
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| <html> | ||
| <head> | ||
| <meta charset="utf-8"> | ||
| <title>Mocha Tests</title> | ||
| <link rel="stylesheet" href="lib/mocha.css" /> | ||
| <script src="../../dist/html2canvas.js"></script> | ||
| <script src="../assets/jquery-1.6.2.js"></script> | ||
| <script src="lib/expect.js"></script> | ||
| <script src="lib/mocha.js"></script> | ||
| <style> | ||
| #block { | ||
| width: 200px; | ||
| height: 200px; | ||
| } | ||
| #green-block { | ||
| width: 200px; | ||
| height: 200px; | ||
| background: green; | ||
| } | ||
| </style> | ||
| </head> | ||
| <body> | ||
| <div id="mocha"></div> | ||
| <div id="block"></div> | ||
| <div id="green-block"></div> | ||
| <script>mocha.setup('bdd')</script> | ||
| <script> | ||
| describe("Multiple renders", function() { | ||
| it("render correctly", function(done) { | ||
| var d = 0; | ||
| for (var i = 0; i < 10; i++) { | ||
| html2canvas(document.querySelector('#green-block')).then(function (canvas) { | ||
| expect(canvas.width).to.equal(200); | ||
| expect(canvas.height).to.equal(200); | ||
| validCanvasPixels(canvas); | ||
| canvas.width = canvas.height = 10; | ||
| d++; | ||
| if (d === 10) { | ||
| done(); | ||
| } | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| it("render correctly when non sequential", function(done) { | ||
| var d = 0; | ||
| for (var i = 0; i < 10; i++) { | ||
| html2canvas(document.querySelector('#block'), {onclone: function(document) { | ||
| return new Promise(function(resolve) { | ||
| document.querySelector('#block').style.backgroundColor = 'green'; | ||
| setTimeout(function() { | ||
| resolve(); | ||
| }, 100); | ||
| }); | ||
| }}).then(function (canvas) { | ||
| expect(canvas.width).to.equal(200); | ||
| expect(canvas.height).to.equal(200); | ||
| validCanvasPixels(canvas); | ||
| canvas.width = canvas.height = 10; | ||
| d++; | ||
| if (d === 10) { | ||
| done(); | ||
| } | ||
| }); | ||
| } | ||
| }); | ||
| }); | ||
|
|
||
| function validCanvasPixels(canvas) { | ||
| var ctx = canvas.getContext("2d"); | ||
| var data = ctx.getImageData(0, 0, canvas.width, canvas.height).data; | ||
| for (var i = 0, len = data.length; i < len; i+=4) { | ||
| if (data[i] !== 0 || data[i+1] !== 128 || data[i+2] !== 0 || data[i+3] !== 255) { | ||
| expect().fail("Invalid canvas data"); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| mocha.checkLeaks(); | ||
| mocha.globals(['jQuery']); | ||
| if (window.mochaPhantomJS) { | ||
| mochaPhantomJS.run(); | ||
| } | ||
| else { | ||
| mocha.run(); | ||
| } | ||
| </script> | ||
| </body> | ||
| </html> |