1 files changed, 112 insertions, 0 deletions
diff --git a/testing/web-platform/tests/page-visibility/resources/pagevistestharness.js b/testing/web-platform/tests/page-visibility/resources/pagevistestharness.js
new file mode 100644
index 0000000000..d164d4603b
--- /dev/null
+++ b/testing/web-platform/tests/page-visibility/resources/pagevistestharness.js
@@ -0,0 +1,112 @@
+//
+// Helper functions for Page Visibility tests
+//
+
+var VISIBILITY_STATES =
+{
+    HIDDEN: "hidden",
+    VISIBLE: "visible"
+};
+
+var feature_check = false;
+
+//
+// All test() functions in the WebPerf PageVis test suite should use pv_test() instead.
+//
+// pv_test() validates the document.hidden and document.visibilityState attributes
+// exist prior to running tests and immediately shows a failure if they do not.
+//
+
+function pv_test(func, msg, doc)
+{
+    if (!doc)
+    {
+        doc = document;
+    }
+
+    // only run the feature check once, unless func == null, in which case,
+    // this call is intended as a feature check
+    if (!feature_check)
+    {
+        feature_check = true;
+
+        var hiddenVal = doc.hidden;
+        var visStateVal = doc.visibilityState;
+
+        // show a single error that the Page Visibility feature is undefined
+        test(function()
+        {
+            assert_true(hiddenVal !== undefined && hiddenVal != null,
+                        "document.hidden is defined and not null.");},
+                        "document.hidden is defined and not null.");
+
+        test(function()
+        {
+            assert_true(visStateVal !== undefined && hiddenVal != null,
+                        "document.visibilityState is defined and not null.");},
+                        "document.visibilityState is defined and not null.");
+
+    }
+
+    if (func)
+    {
+        test(func, msg);
+    }
+}
+
+
+function test_feature_exists(doc, msg)
+{
+    if (!msg)
+    {
+        msg = "";
+    }
+    var hiddenMsg = "document.hidden is defined" + msg + ".";
+    var stateMsg = "document.visibilityState is defined" + msg + ".";
+    pv_test(function(){assert_not_equals(document.hidden, undefined, hiddenMsg);}, hiddenMsg, doc);
+    pv_test(function(){assert_not_equals(document.visibilityState, undefined, stateMsg);}, stateMsg, doc);
+}
+
+//
+// Common helper functions
+//
+
+function test_true(value, msg)
+{
+    pv_test(function() { assert_true(value, msg); }, msg);
+}
+
+function test_equals(value, equals, msg)
+{
+    pv_test(function() { assert_equals(value, equals, msg); }, msg);
+}
+
+//
+// asynchronous test helper functions
+//
+
+function add_async_result(test_obj, pass_state)
+{
+    // add assertion to manual test for the pass state
+    test_obj.step(function() { assert_true(pass_state) });
+
+    // end manual test
+    test_obj.done();
+}
+
+function add_async_result_assert(test_obj, func)
+{
+    // add assertion to manual test for the pass state
+    test_obj.step(func);
+
+    // end manual test
+    test_obj.done();
+}
+
+var open_link;
+function TabSwitch()
+{
+    //var open_link = window.open("http://www.bing.com");
+    open_link = window.open('', '_blank');
+    step_timeout(function() { open_link.close(); }, 2000);
+}