1 files changed, 83 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-helpers.js b/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-helpers.js
new file mode 100644
index 0000000000..09c85dd7bc
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-helpers.js
@@ -0,0 +1,83 @@
+function enableAllTextTracks(textTracks) {
+    for (var i = 0; i < textTracks.length; i++) {
+        var track = textTracks[i];
+        if (track.mode == "disabled")
+            track.mode = "hidden";
+    }
+}
+
+function assert_cues_equal(cues, expected) {
+    assert_equals(cues.length, expected.length);
+    for (var i = 0; i < cues.length; i++) {
+        assert_equals(cues[i].id, expected[i].id);
+        assert_equals(cues[i].startTime, expected[i].startTime);
+        assert_equals(cues[i].endTime, expected[i].endTime);
+        assert_equals(cues[i].text, expected[i].text);
+    }
+}
+
+function assert_cues_match(cues, expected) {
+    assert_equals(cues.length, expected.length);
+    for (var i = 0; i < cues.length; i++) {
+        var cue = cues[i];
+        var expectedItem = expected[i];
+        for (var property of Object.getOwnPropertyNames(expectedItem))
+            assert_equals(cue[property], expectedItem[property]);
+    }
+}
+
+function assert_cues_html_content(cues, expected) {
+    assert_equals(cues.length, expected.length);
+    for (var i = 0; i < cues.length; i++) {
+        var expectedItem = expected[i];
+        var property = Object.getOwnPropertyNames(expectedItem)[0];
+        var propertyValue = expectedItem[property];
+        assert_equals(propertyValue(cues[i]), expectedItem.expected);
+    }
+}
+
+function check_cues_from_track(src, func) {
+    async_test(function(t) {
+        var video = document.createElement("video");
+        var trackElement = document.createElement("track");
+        trackElement.src = src;
+        trackElement.default = true;
+        video.appendChild(trackElement);
+
+        trackElement.onload = t.step_func_done(function() {
+            func(trackElement.track);
+        });
+    }, "Check cues from " + src);
+}
+
+function assert_cue_fragment(cue, children) {
+    var fragment = createFragment(children);
+    assert_true(fragment.isEqualNode(cue.getCueAsHTML()));
+}
+
+function assert_cue_fragment_as_textcontent(cue, children) {
+    var fragment = createFragment(children);
+    assert_equals(cue.getCueAsHTML().textContent, fragment.textContent);
+}
+
+function createFragment(children) {
+    var fragment = document.createDocumentFragment();
+    cloneChildrenToFragment(fragment, children);
+    return fragment;
+}
+
+function cloneChildrenToFragment(root, children) {
+    for (var child of children) {
+        var childElement;
+        if (child.type == "text") {
+            childElement = document.createTextNode(child.value);
+        } else {
+            childElement = document.createElement(child.type);
+            var styles = child.style || {};
+            for (var attr of Object.getOwnPropertyNames(styles))
+                childElement[attr] = styles[attr];
+            cloneChildrenToFragment(childElement, child.value);
+        }
+        root.appendChild(childElement);
+    }
+}
+\ No newline at end of file