diff --git a/testing/web-platform/meta/dom/events/AddEventListenerOptions-passive.html.ini b/testing/web-platform/meta/dom/events/AddEventListenerOptions-passive.html.ini
new file mode 100644
index 000000000000..daa2db61f616
--- /dev/null
+++ b/testing/web-platform/meta/dom/events/AddEventListenerOptions-passive.html.ini
@@ -0,0 +1,4 @@
+[AddEventListenerOptions-passive.html]
+  [returnValue should be ignored if-and-only-if the passive option is true]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/dom/events/Event-constructors.html.ini b/testing/web-platform/meta/dom/events/Event-constructors.html.ini
new file mode 100644
index 000000000000..69db3949a539
--- /dev/null
+++ b/testing/web-platform/meta/dom/events/Event-constructors.html.ini
@@ -0,0 +1,7 @@
+[Event-constructors.html]
+  [Event constructors 2]
+    expected: FAIL
+
+  [Event constructors 3]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/dom/events/Event-defaultPrevented-after-dispatch.html.ini b/testing/web-platform/meta/dom/events/Event-defaultPrevented-after-dispatch.html.ini
new file mode 100644
index 000000000000..5187ca566809
--- /dev/null
+++ b/testing/web-platform/meta/dom/events/Event-defaultPrevented-after-dispatch.html.ini
@@ -0,0 +1,4 @@
+[Event-defaultPrevented-after-dispatch.html]
+  [Default prevention via returnValue]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/dom/events/Event-initEvent.html.ini b/testing/web-platform/meta/dom/events/Event-initEvent.html.ini
new file mode 100644
index 000000000000..0b4ce51d9406
--- /dev/null
+++ b/testing/web-platform/meta/dom/events/Event-initEvent.html.ini
@@ -0,0 +1,13 @@
+[Event-initEvent.html]
+  [Properties of initEvent(type, true, true)]
+    expected: FAIL
+
+  [Properties of initEvent(type, true, false)]
+    expected: FAIL
+
+  [Properties of initEvent(type, false, true)]
+    expected: FAIL
+
+  [Properties of initEvent(type, false, false)]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/dom/events/Event-returnValue.html.ini b/testing/web-platform/meta/dom/events/Event-returnValue.html.ini
new file mode 100644
index 000000000000..e9c34f6438f4
--- /dev/null
+++ b/testing/web-platform/meta/dom/events/Event-returnValue.html.ini
@@ -0,0 +1,19 @@
+[Event-returnValue.html]
+  [When an event is created, returnValue should be initialized to true.]
+    expected: FAIL
+
+  [preventDefault() should not change returnValue if cancelable is false.]
+    expected: FAIL
+
+  [returnValue=false should have no effect if cancelable is false.]
+    expected: FAIL
+
+  [preventDefault() should change returnValue if cancelable is true.]
+    expected: FAIL
+
+  [initEvent should unset returnValue.]
+    expected: FAIL
+
+  [returnValue=true should have no effect once the canceled flag was set.]
+    expected: FAIL
+
diff --git a/testing/web-platform/meta/dom/events/EventTarget-dispatchEvent-returnvalue.html.ini b/testing/web-platform/meta/dom/events/EventTarget-dispatchEvent-returnvalue.html.ini
new file mode 100644
index 000000000000..5fe7e8ffe604
--- /dev/null
+++ b/testing/web-platform/meta/dom/events/EventTarget-dispatchEvent-returnvalue.html.ini
@@ -0,0 +1,7 @@
+[EventTarget-dispatchEvent-returnvalue.html]
+  [Return value of EventTarget.dispatchEvent() affected by preventDefault().]
+    expected: FAIL
+
+  [Return value of EventTarget.dispatchEvent() affected by returnValue.]
+    expected: FAIL
+