test_bug513439.html (952B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=513439 5 --> 6 <head> 7 <title>Test for Bug 513439</title> 8 <script src="/tests/SimpleTest/SimpleTest.js"></script> 9 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 10 </head> 11 <body> 12 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=513439">Mozilla Bug 513439</a> 13 <p id="display"></p> 14 <div id="content" style="display: none"> 15 16 </div> 17 <pre id="test"> 18 <script type="application/javascript"> 19 20 /** Test for Bug 513439 */ 21 22 SimpleTest.waitForExplicitFinish(); 23 24 SpecialPowers.pushPrefEnv({set: [["layout.css.devPixelsPerPx", "2"]]}, () => { 25 is(window.devicePixelRatio, 2, "devPixelsPerPx wasn't set correctly"); 26 27 SpecialPowers.pushPrefEnv({set: [["layout.css.devPixelsPerPx", "1.5"]]}, () => { 28 is(window.devicePixelRatio, 1.5, "devPixelsPerPx wasn't set correctly"); 29 SimpleTest.finish(); 30 }); 31 }); 32 33 </script> 34 </pre> 35 </body> 36 </html>