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dom/power/test/test_power_set_screen_brightness.html
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| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <meta charset="utf-8"> | |
| 5 <title>Test Setting Screen Brightness with Power Management API</title> | |
| 6 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> | |
| 7 <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 8 </head> | |
| 9 <body> | |
| 10 <p id="display"></p> | |
| 11 <div id="content" style="display: none"></div> | |
| 12 <pre id="test"> | |
| 13 <script type="application/javascript"> | |
| 14 | |
| 15 "use strict"; | |
| 16 | |
| 17 // Test setting brightness to a value < 0 | |
| 18 function testInvalidBrightness1() { | |
| 19 try { | |
| 20 navigator.mozPower.screenBrightness = -1; | |
| 21 } catch (e) { | |
| 22 return ok(true, "Invalid brightness level results in exception."); | |
| 23 } | |
| 24 ok(false, "Exeception not thrown for invalid brightness level."); | |
| 25 } | |
| 26 | |
| 27 // Test setting brightness to a value > 1 | |
| 28 function testInvalidBrightness2() { | |
| 29 try { | |
| 30 navigator.mozPower.screenBrightness = 2; | |
| 31 } catch (e) { | |
| 32 return ok(true, "Invalid brightness level results in exception."); | |
| 33 } | |
| 34 ok(false, "Exeception not thrown for invalid brightness level."); | |
| 35 } | |
| 36 | |
| 37 function testSettingBrightness() { | |
| 38 var newBright = 0.312; | |
| 39 navigator.mozPower.screenBrightness = newBright; | |
| 40 ok(fuzzyEq(newBright, navigator.mozPower.screenBrightness), | |
| 41 "Set new brightness value."); | |
| 42 } | |
| 43 | |
| 44 function startTests() { | |
| 45 testInvalidBrightness1(); | |
| 46 testInvalidBrightness2(); | |
| 47 testSettingBrightness(); | |
| 48 | |
| 49 SimpleTest.finish(); | |
| 50 } | |
| 51 | |
| 52 function fuzzyEq(a, b) { | |
| 53 var epsilon = 0.002; | |
| 54 return Math.abs(a - b) < epsilon; | |
| 55 } | |
| 56 | |
| 57 SimpleTest.expectAssertions(0, 9); | |
| 58 SimpleTest.waitForExplicitFinish(); | |
| 59 if (SpecialPowers.hasPermission("power", document)) { | |
| 60 // Currently only applicable on FxOS | |
| 61 if (navigator.userAgent.indexOf("Mobile") != -1 && | |
| 62 navigator.appVersion.indexOf("Android") == -1) { | |
| 63 startTests(); | |
| 64 } else { | |
| 65 ok(true, "mozPower on Firefox OS only."); | |
| 66 SimpleTest.finish(); | |
| 67 } | |
| 68 } else { | |
| 69 // Add the permission and reload so it's propogated | |
| 70 SpecialPowers.addPermission("power", true, document); | |
| 71 window.location.reload(); | |
| 72 } | |
| 73 </script> | |
| 74 </pre> | |
| 75 </body> | |
| 76 </html> |
