properties-value-inherit-002.html (7529B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title>CSS Transitions Test: transitioning inherited property values</title> 6 <meta name="timeout" content="long"> 7 <meta name="assert" content="Test checks that inherited property values that are not transitioned on a parent element start a transition"> 8 <link rel="help" title="3. Starting of transitions" href="http://www.w3.org/TR/css3-transitions/#starting"> 9 <link rel="author" title="Rodney Rehm" href="http://rodneyrehm.de/en/"> 10 <meta name="flags" content="dom "> 11 12 <script src="/resources/testharness.js" type="text/javascript"></script> 13 <script src="/resources/testharnessreport.js" type="text/javascript"></script> 14 15 <script src="./support/vendorPrefix.js" type="text/javascript"></script> 16 <script src="./support/helper.js" type="text/javascript"></script> 17 <script src="./support/runParallelAsyncHarness.js" type="text/javascript"></script> 18 <script src="./support/generalParallelTest.js" type="text/javascript"></script> 19 <script src="./support/properties.js" type="text/javascript"></script> 20 21 <style type="text/css"> 22 #offscreen { 23 position: absolute; 24 top: -100000px; 25 left: -100000px; 26 width: 100000px; 27 height: 100000px; 28 } 29 </style> 30 </head> 31 <body> 32 <!-- required by testharnessreport.js --> 33 <div id="log"></div> 34 <!-- elements used for testing --> 35 <div id="fixture" class="fixture"> 36 <div class="container"> 37 <div class="transition">Text sample</div> 38 </div> 39 </div> 40 <div id="offscreen"></div> 41 42 <!-- 43 SEE ./support/README.md for an abstract explanation of the test procedure 44 http://test.csswg.org/source/contributors/rodneyrehm/submitted/css3-transitions/README.md 45 --> 46 47 <script> 48 // http://www.w3.org/TR/css3-transitions/#starting 49 // Implementations also must not start a transition when the computed value changes because 50 // it is inherited (directly or indirectly) from another element that is transitioning the same property. 51 // Note: Parent element doesn't transition, so above quote doesn't apply! 52 53 // this test takes its time, give it a minute to run 54 var timeout = 60000; 55 setup({timeout: timeout}); 56 57 var tests = getPropertyTests(); 58 // for testing, limit to a couple of iterations 59 // tests = tests.slice(10, 30); 60 // or filter using one of: 61 // tests = filterPropertyTests(tests, "background-color color(rgba)"); 62 // tests = filterPropertyTests(tests, ["background-color color(rgba)", ...]); 63 // tests = filterPropertyTests(tests, /^background-color/); 64 65 // general transition-duration 66 var duration = '2s'; 67 68 runParallelAsyncHarness({ 69 // array of test data 70 tests: tests, 71 // the number of tests to run in parallel 72 testsPerSlice: 50, 73 // milliseconds to wait before calling teardown and ending test 74 duration: parseFloat(duration) * 1000, 75 // prepare individual test 76 setup: function(data, options) { 77 // clone and overwrite initial styles to be 78 // applied to #transition 79 var inherited = extend({}, data.from); 80 inherited[data.property] = 'inherit'; 81 82 var styles = { 83 // as we're testing inheritance, #fixture is our new parent 84 '.fixture': data.parentStyle, 85 // all styles including transition apply to to #container so they 86 // can inherit down to #transition 87 '.container': extend({}, data.parentStyle, data.from), 88 '.container.to': data.to, 89 '.container.how': {}, 90 // #transition only inherits and listens for transition events 91 '.transition': inherited, 92 '.transition.to' : {}, 93 '.transition.how' : {transition: addVendorPrefix(data.property) + ' ' + duration + ' linear 0s'} 94 }; 95 96 generalParallelTest.setup(data, options); 97 generalParallelTest.addStyles(data, options, styles); 98 }, 99 // cleanup after individual test 100 teardown: generalParallelTest.teardown, 101 // invoked prior to running a slice of tests 102 sliceStart: generalParallelTest.sliceStart, 103 // invoked after transitions have started 104 transitionsStarted: generalParallelTest.transitionsStarted, 105 // invoked after running a slice of tests 106 sliceDone: generalParallelTest.sliceDone, 107 // test cases, make them as granular as possible 108 cases: { 109 // test property values while transitioning 110 // values.start kicks off a transition 111 'values': { 112 // run actual test, assertions can be used here! 113 start: function(test, data, options) { 114 // identify initial and target values 115 generalParallelTest.getStyle(data); 116 // make sure values differ, if they don't, the property could most likely not be parsed 117 assert_not_equals(data.transition.from, data.transition.to, "initial and target values may not match"); 118 // kick off the transition 119 generalParallelTest.startTransition(data); 120 121 // make sure we didn't get the target value immediately. 122 // If we did, there wouldn't be a transition! 123 var current = data.transition.computedStyle(data.property); 124 assert_not_equals(current, data.transition.to, "must not be target value after start"); 125 }, 126 done: function(test, data, options) { 127 // make sure the property's value were neither initial nor target while transitioning 128 test.step(generalParallelTest.assertIntermediateValuesFunc(data, 'transition')); 129 } 130 }, 131 // test TransitionEnd events 132 'events': { 133 done: function(test, data, options) { 134 // make sure there were no events on parent 135 test.step(generalParallelTest.assertExpectedEventsFunc(data, 'container', "")); 136 // make sure we got the event for the tested property only 137 test.step(generalParallelTest.assertExpectedEventsFunc(data, 'transition', addVendorPrefix(data.property) + ":" + duration)); 138 } 139 } 140 }, 141 // called once all tests are done 142 done: generalParallelTest.done 143 }); 144 </script> 145 </body> 146 </html>