DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (a81015259a98)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=435441
-->
<head>
  <title>Test for Bug 435441</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=435441">Mozilla Bug 435441</a>
<div id="content" style="display: none"></div>
<pre id="test">
<script type="application/javascript">

/** Test for Bug 435441 **/


/**
 * I want to test a reasonable number of combinations rather than all of
 * them, but I also want the test results to be reproducable.  So use a
 * simple random number generator with my own seed.  See
 * http://en.wikipedia.org/wiki/Linear_congruential_generator
 * (Using the numbers from Numerical Recipes.)
 */
var rand_state = 1938266273; // a randomly (once) generated number in [0,2^32)
var all_integers = true;
function myrand()
{
  rand_state = ((rand_state * 1664525) + 1013904223) % 0x100000000;
  all_integers = all_integers &&
                 Math.ceil(rand_state) == Math.floor(rand_state);
  return rand_state / 0x100000000; // return value in [0,1)
}

// We want to test a bunch of values for each property.
// Each of these values will also have a "computed" property filled in
// below, so that we ensure it always computes to the same value.
var values = {
  "-moz-transition-duration":
    [
      { lone: true,  specified: "-moz-initial" },
      { lone: false, specified: "2s" },
      { lone: false, specified: "0s" },
      { lone: false, specified: "430ms" },
      { lone: false, specified: "-1s" },
    ],
  "-moz-transition-property":
    [
      { lone: true,  specified: "-moz-initial" },
      { lone: true,  specified: "none" },
      { lone: true,  specified: "all" },
      { lone: false, specified: "color" },
      { lone: false, specified: "border-spacing" },
      // Make sure to test the "unknown property" case.
      { lone: false, specified: "unsupported-property" },
      { lone: false, specified: "-other-unsupported-property" },
    ],
  "-moz-transition-timing-function":
    [
      { lone: true,  specified: "-moz-initial" },
      { lone: false, specified: "linear" },
      { lone: false, specified: "ease" },
      { lone: false, specified: "ease-in-out" },
      { lone: false, specified: "cubic-bezier(0, 0, 0.63, 1.00)" },
    ],
  "-moz-transition-delay":
    [
      { lone: true,  specified: "-moz-initial" },
      { lone: false, specified: "2s" },
      { lone: false, specified: "0s" },
      { lone: false, specified: "430ms" },
      { lone: false, specified: "-1s" },
    ],
};

var elt = document.getElementById("content");
var cs = getComputedStyle(elt, "");

// Add the "computed" property to all of the above values.
for (var prop in values) {
  var valueset = values[prop];
  for (var index in valueset) {
    var item = valueset[index];
    elt.style.setProperty(prop, item.specified, "");
    item.computed = cs.getPropertyValue(prop);
    elt.style.removeProperty(prop);
    isnot(item.computed, "", "computed value must not be empty");
    if (index != 0) {
      isnot(item.computed, valueset[index-1].computed,
            "computed value must not be the same as the last one");
    }
  }
}

var child = document.createElement("div");
elt.appendChild(child);
var child_cs = getComputedStyle(child, "");

// Now test a hundred random combinations of values on the parent and
// child.
for (var iteration = 0; iteration < 100; ++iteration) {
  // Figure out values on the parent.
  var parent_vals = {};
  for (var prop in values) {
    var valueset = values[prop];
    var list_length = Math.ceil(Math.pow(myrand(), 2) * 6);
      // 41% chance of length 1
    var specified = [];
    var computed = [];
    for (var i = 0; i < list_length; ++i) {
      var index;
      do {
        index = Math.floor(myrand() * valueset.length);
      } while (list_length != 1 && valueset[index].lone);
      specified.push(valueset[index].specified);
      computed.push(valueset[index].computed);
    }
    parent_vals[prop] = { specified: specified.join(", "),
                          computed:  computed.join(", ") };
    elt.style.setProperty(prop, parent_vals[prop].specified, "");
  }

  // Figure out values on the child.
  var child_vals = {};
  for (var prop in values) {
    var valueset = values[prop];
    // Use 0 as a magic value for "inherit".
    var list_length = Math.floor(Math.pow(myrand(), 1.5) * 7);
      // 27% chance of inherit
      // 16% chance of length 1
    if (list_length == 0) {
      child_vals[prop] = { specified: "inherit",
                           computed: parent_vals[prop].computed };
    } else {
      var specified = [];
      var computed = [];
      for (var i = 0; i < list_length; ++i) {
        var index;
        do {
          index = Math.floor(myrand() * valueset.length);
        } while (list_length != 1 && valueset[index].lone);
        specified.push(valueset[index].specified);
        computed.push(valueset[index].computed);
      }
      child_vals[prop] = { specified: specified.join(", "),
                           computed:  computed.join(", ") };
    }
    child.style.setProperty(prop, child_vals[prop].specified, "");
  }

  // Test computed values
  for (var prop in values) {
    is(cs.getPropertyValue(prop), parent_vals[prop].computed,
       "computed value of " + prop + ": " + parent_vals[prop].specified +
       " on parent.");
    is(child_cs.getPropertyValue(prop), child_vals[prop].computed,
       "computed value of " + prop + ": " + child_vals[prop].specified +
       " on child.");
  }
}

ok(all_integers, "pseudo-random number generator kept its numbers " +
                 "as integers throughout run");

</script>
</pre>
</body>
</html>