1 files changed, 93 insertions, 0 deletions
diff --git a/testing/web-platform/tests/shadow-dom/resources/event-path-test-helpers.js b/testing/web-platform/tests/shadow-dom/resources/event-path-test-helpers.js
new file mode 100644
index 000000000..091bcd082
--- /dev/null
+++ b/testing/web-platform/tests/shadow-dom/resources/event-path-test-helpers.js
@@ -0,0 +1,93 @@
+
+function dispatchEventWithLog(shadow, target, event) {
+    var eventPath = [];
+    var relatedTargets = [];
+    var pathAtTargets = [];
+
+    var attachedNodes = [];
+    for (var nodeKey in shadow) {
+        var startingNode = shadow[nodeKey];
+        for (var node = startingNode; node; node = node.parentNode) {
+            if (attachedNodes.indexOf(node) >= 0)
+                continue;
+            attachedNodes.push(node);
+            node.addEventListener(event.type, (function (event) {
+                eventPath.push(this.label);
+                relatedTargets.push(event.relatedTarget ? event.relatedTarget.label : null);
+
+                if (!event.composedPath) // Don't fail all tests just for the lack of composedPath.
+                    return;
+
+                pathAtTargets.push(event.composedPath().map(function (node) { return node.label; }));
+            }).bind(node));
+        }
+    }
+
+    target.dispatchEvent(event);
+
+    return {eventPath: eventPath, relatedTargets: relatedTargets, pathAtTargets: pathAtTargets};
+}
+
+/*
+-SR: ShadowRoot  -S: Slot
+A ------------------------------- A-SR
++ B ------------ B-SR             + A1 --- A1-SR
+  + C            + B1 --- B1-SR   + A2-S   + A1a
+  + D --- D-SR     + B1a  + B1b --- B1b-SR
+          + D1            + B1c-S   + B1b1
+                                    + B1b2
+*/
+function createTestTree(mode) {
+    var namedNodes = {};
+
+    function element(name) {
+        var element = document.createElement(name.indexOf('-S') > 0 ? 'slot' : 'div');
+        element.label = name;
+        namedNodes[name] = element;
+        for (var i = 1; i < arguments.length; i++) {
+            var item = arguments[i];
+            if (typeof(item) == 'function')
+                item(element);
+            else
+                element.appendChild(item);
+        }
+        return element;
+    }
+
+    function shadow(name) {
+        var children = [];
+        for (var i = 1; i < arguments.length; i++)
+            children.push(arguments[i]);
+        return function (element) {
+            var shadowRoot = element.attachShadow({mode: mode});
+            shadowRoot.label = name;
+            namedNodes[name] = shadowRoot;
+            for (var child of children)
+                shadowRoot.appendChild(child);
+        }
+    }
+
+    var host = element('A',
+        shadow('A-SR',
+            element('A1',
+                shadow('A1-SR',
+                    element('A1a'))),
+            element('A2-S')
+        ),
+        element('B',
+            shadow('B-SR',
+                element('B1',
+                    shadow('B1-SR',
+                        element('B1b',
+                            shadow('B1b-SR',
+                                element('B1b1'),
+                                element('B1b2'))),
+                        element('B1c-S')),
+                    element('B1a'))),
+            element('C'),
+            element('D',
+                shadow('D-SR',
+                    element('D1')))));
+
+    return namedNodes;
+}