1 files changed, 56 insertions, 0 deletions
diff --git a/test/wpt/tests/common/performance-timeline-utils.js b/test/wpt/tests/common/performance-timeline-utils.js
new file mode 100644
index 0000000..b20241c
--- /dev/null
+++ b/test/wpt/tests/common/performance-timeline-utils.js
@@ -0,0 +1,56 @@
+/*
+author: W3C http://www.w3.org/
+help: http://www.w3.org/TR/navigation-timing/#sec-window.performance-attribute
+*/
+var performanceNamespace = window.performance;
+var namespace_check = false;
+function wp_test(func, msg, properties)
+{
+  // only run the namespace check once
+  if (!namespace_check)
+  {
+    namespace_check = true;
+
+    if (performanceNamespace === undefined || performanceNamespace == null)
+    {
+      // show a single error that window.performance is undefined
+      // The window.performance attribute provides a hosting area for performance related attributes.
+      test(function() { assert_true(performanceNamespace !== undefined && performanceNamespace != null, "window.performance is defined and not null"); }, "window.performance is defined and not null.");
+    }
+  }
+
+  test(func, msg, properties);
+}
+
+function test_true(value, msg, properties)
+{
+  wp_test(function () { assert_true(value, msg); }, msg, properties);
+}
+
+function test_equals(value, equals, msg, properties)
+{
+  wp_test(function () { assert_equals(value, equals, msg); }, msg, properties);
+}
+
+// assert for every entry in `expectedEntries`, there is a matching entry _somewhere_ in `actualEntries`
+function test_entries(actualEntries, expectedEntries) {
+  test_equals(actualEntries.length, expectedEntries.length)
+  expectedEntries.forEach(function (expectedEntry) {
+    var foundEntry = actualEntries.find(function (actualEntry) {
+      return typeof Object.keys(expectedEntry).find(function (key) {
+            return actualEntry[key] !== expectedEntry[key]
+          }) === 'undefined'
+    })
+    test_true(!!foundEntry, `Entry ${JSON.stringify(expectedEntry)} could not be found.`)
+    if (foundEntry) {
+      assert_object_equals(foundEntry.toJSON(), expectedEntry)
+    }
+  })
+}
+
+function delayedLoadListener(callback) {
+  window.addEventListener('load', function() {
+    // TODO(cvazac) Remove this setTimeout when spec enforces sync entries.
+    step_timeout(callback, 0)
+  })
+}