<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=587106 --> <head> <title>Test for Bug 587106</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=587106">Mozilla Bug 587106</a> <p id="display"><canvas id="c"><canvas></p> <div id="content" style="display: none"> </div> <pre id="test"> <script type="application/javascript"> /** Test for Bug 587106 **/ var ctx=document.getElementById('c').getContext('2d'); for (var i = 0; i < 100; ++i) { // Skip things that will give different alpha values depending on weird // rounding stuff. var tentativeAlpha = i / 100 * 255; if (Math.abs(tentativeAlpha.toFixed(1) - tentativeAlpha.toFixed(0)) == 0.5) { // Skip this one, please! continue; } ctx.strokeStyle = 'rgba(0, 0, 0, ' + (i/100) + ')'; is(ctx.strokeStyle, 'rgba(0, 0, 0, ' + (i/100) + ')', 'strokeStyle should match for opacity='+(i/100)); } </script> </pre> </body> </html>