1/*
2author: W3C http://www.w3.org/
3help: http://www.w3.org/TR/navigation-timing/#sec-window.performance-attribute
4*/
5var performanceNamespace = window.performance;
6var namespace_check = false;
7function wp_test(func, msg, properties)
8{
9  // only run the namespace check once
10  if (!namespace_check)
11  {
12    namespace_check = true;
13
14    if (performanceNamespace === undefined || performanceNamespace == null)
15    {
16      // show a single error that window.performance is undefined
17      // The window.performance attribute provides a hosting area for performance related attributes.
18      test(function() { assert_true(performanceNamespace !== undefined && performanceNamespace != null, "window.performance is defined and not null"); }, "window.performance is defined and not null.");
19    }
20  }
21
22  test(func, msg, properties);
23}
24
25function test_true(value, msg, properties)
26{
27  wp_test(function () { assert_true(value, msg); }, msg, properties);
28}
29
30function test_equals(value, equals, msg, properties)
31{
32  wp_test(function () { assert_equals(value, equals, msg); }, msg, properties);
33}
34
35// assert for every entry in `expectedEntries`, there is a matching entry _somewhere_ in `actualEntries`
36function test_entries(actualEntries, expectedEntries) {
37  test_equals(actualEntries.length, expectedEntries.length)
38  expectedEntries.forEach(function (expectedEntry) {
39    var foundEntry = actualEntries.find(function (actualEntry) {
40      return typeof Object.keys(expectedEntry).find(function (key) {
41            return actualEntry[key] !== expectedEntry[key]
42          }) === 'undefined'
43    })
44    test_true(!!foundEntry, `Entry ${JSON.stringify(expectedEntry)} could not be found.`)
45    if (foundEntry) {
46      assert_object_equals(foundEntry.toJSON(), expectedEntry)
47    }
48  })
49}
50
51function delayedLoadListener(callback) {
52  window.addEventListener('load', function() {
53    // TODO(cvazac) Remove this setTimeout when spec enforces sync entries.
54    step_timeout(callback, 0)
55  })
56}
57