diff --git a/components/script/dom/testbinding.rs b/components/script/dom/testbinding.rs
index ba57bce3bf1..687d68a5eb9 100644
--- a/components/script/dom/testbinding.rs
+++ b/components/script/dom/testbinding.rs
@@ -188,6 +188,7 @@ impl TestBindingMethods for TestBinding {
     fn ReceiveObject(&self, _: *mut JSContext) -> *mut JSObject { panic!() }
     fn ReceiveUnion(&self) -> HTMLElementOrLong { HTMLElementOrLong::eLong(0) }
     fn ReceiveUnion2(&self) -> EventOrString { EventOrString::eString(DOMString::new()) }
+    fn ReceiveSequence(&self) -> Vec<i32> { vec![1] }
 
     fn ReceiveNullableBoolean(&self) -> Option<bool> { Some(false) }
     fn ReceiveNullableByte(&self) -> Option<i8> { Some(0) }
@@ -216,6 +217,7 @@ impl TestBindingMethods for TestBinding {
     fn ReceiveNullableUnion2(&self) -> Option<EventOrString> {
         Some(EventOrString::eString(DOMString::new()))
     }
+    fn ReceiveNullableSequence(&self) -> Option<Vec<i32>> { Some(vec![1]) }
 
     fn PassBoolean(&self, _: bool) {}
     fn PassByte(&self, _: i8) {}
@@ -242,6 +244,8 @@ impl TestBindingMethods for TestBinding {
     fn PassObject(&self, _: *mut JSContext, _: *mut JSObject) {}
     fn PassCallbackFunction(&self, _: Rc<Function>) {}
     fn PassCallbackInterface(&self, _: Rc<EventListener>) {}
+    fn PassSequence(&self, _: Vec<i32>) {}
+    fn PassStringSequence(&self, _: Vec<DOMString>) {}
 
     fn PassNullableBoolean(&self, _: Option<bool>) {}
     fn PassNullableByte(&self, _: Option<i8>) {}
@@ -266,6 +270,7 @@ impl TestBindingMethods for TestBinding {
     fn PassNullableUnion2(&self, _: Option<EventOrString>) {}
     fn PassNullableCallbackFunction(&self, _: Option<Rc<Function>>) {}
     fn PassNullableCallbackInterface(&self, _: Option<Rc<EventListener>>) {}
+    fn PassNullableSequence(&self, _: Option<Vec<i32>>) {}
 
     fn PassOptionalBoolean(&self, _: Option<bool>) {}
     fn PassOptionalByte(&self, _: Option<i8>) {}
@@ -291,6 +296,7 @@ impl TestBindingMethods for TestBinding {
     fn PassOptionalObject(&self, _: *mut JSContext, _: Option<*mut JSObject>) {}
     fn PassOptionalCallbackFunction(&self, _: Option<Rc<Function>>) {}
     fn PassOptionalCallbackInterface(&self, _: Option<Rc<EventListener>>) {}
+    fn PassOptionalSequence(&self, _: Option<Vec<i32>>) {}
 
     fn PassOptionalNullableBoolean(&self, _: Option<Option<bool>>) {}
     fn PassOptionalNullableByte(&self, _: Option<Option<i8>>) {}
@@ -315,6 +321,7 @@ impl TestBindingMethods for TestBinding {
     fn PassOptionalNullableUnion2(&self, _: Option<Option<EventOrString>>) {}
     fn PassOptionalNullableCallbackFunction(&self, _: Option<Option<Rc<Function>>>) {}
     fn PassOptionalNullableCallbackInterface(&self, _: Option<Option<Rc<EventListener>>>) {}
+    fn PassOptionalNullableSequence(&self, _: Option<Option<Vec<i32>>>) {}
 
     fn PassOptionalBooleanWithDefault(&self, _: bool) {}
     fn PassOptionalByteWithDefault(&self, _: i8) {}
diff --git a/components/script/dom/webidls/TestBinding.webidl b/components/script/dom/webidls/TestBinding.webidl
index e6495d90d66..7934182621e 100644
--- a/components/script/dom/webidls/TestBinding.webidl
+++ b/components/script/dom/webidls/TestBinding.webidl
@@ -149,6 +149,7 @@ interface TestBinding {
   object receiveObject();
   (HTMLElement or long) receiveUnion();
   (Event or DOMString) receiveUnion2();
+  sequence<long> receiveSequence();
 
   byte? receiveNullableByte();
   boolean? receiveNullableBoolean();
@@ -171,6 +172,7 @@ interface TestBinding {
   object? receiveNullableObject();
   (HTMLElement or long)? receiveNullableUnion();
   (Event or DOMString)? receiveNullableUnion2();
+  sequence<long>? receiveNullableSequence();
 
   void passBoolean(boolean arg);
   void passByte(byte arg);
@@ -197,6 +199,8 @@ interface TestBinding {
   void passObject(object arg);
   void passCallbackFunction(Function fun);
   void passCallbackInterface(EventListener listener);
+  void passSequence(sequence<long> seq);
+  void passStringSequence(sequence<DOMString> seq);
 
   void passNullableBoolean(boolean? arg);
   void passNullableByte(byte? arg);
@@ -221,6 +225,7 @@ interface TestBinding {
   void passNullableUnion2((Event or DOMString)? data);
   void passNullableCallbackFunction(Function? fun);
   void passNullableCallbackInterface(EventListener? listener);
+  void passNullableSequence(sequence<long>? seq);
 
   void passOptionalBoolean(optional boolean arg);
   void passOptionalByte(optional byte arg);
@@ -246,6 +251,7 @@ interface TestBinding {
   void passOptionalObject(optional object arg);
   void passOptionalCallbackFunction(optional Function fun);
   void passOptionalCallbackInterface(optional EventListener listener);
+  void passOptionalSequence(optional sequence<long> seq);
 
   void passOptionalNullableBoolean(optional boolean? arg);
   void passOptionalNullableByte(optional byte? arg);
@@ -270,6 +276,7 @@ interface TestBinding {
   void passOptionalNullableUnion2(optional (Event or DOMString)? data);
   void passOptionalNullableCallbackFunction(optional Function? fun);
   void passOptionalNullableCallbackInterface(optional EventListener? listener);
+  void passOptionalNullableSequence(optional sequence<long>? seq);
 
   void passOptionalBooleanWithDefault(optional boolean arg = false);
   void passOptionalByteWithDefault(optional byte arg = 0);