File: test_document_timeline_origin_time_range.html

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<!doctype html>
<meta charset=utf-8>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../testcommon.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';

// If the originTime parameter passed to the DocumentTimeline exceeds
// the range of the internal storage type (a signed 64-bit integer number
// of ticks--a platform-dependent unit) then we should throw.
// Infinity isn't allowed as an origin time value and clamping to just
// inside the allowed range will just mean we overflow elsewhere.

test(function(t) {
  assert_throws({ name: 'TypeError'},
    function() {
      new DocumentTimeline({ originTime: Number.MAX_SAFE_INTEGER });
    });
}, 'Calculated current time is positive infinity');

test(function(t) {
  assert_throws({ name: 'TypeError'},
    function() {
      new DocumentTimeline({ originTime: -1 * Number.MAX_SAFE_INTEGER });
    });
}, 'Calculated current time is negative infinity');

</script>
</body>