1 files changed, 98 insertions, 0 deletions
diff --git a/dom/bindings/test/TestInterfaceAsyncIterableDouble.cpp b/dom/bindings/test/TestInterfaceAsyncIterableDouble.cpp
new file mode 100644
index 0000000000..a0ec0d64f0
--- /dev/null
+++ b/dom/bindings/test/TestInterfaceAsyncIterableDouble.cpp
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/TestInterfaceAsyncIterableDouble.h"
+#include "mozilla/dom/TestInterfaceJSMaplikeSetlikeIterableBinding.h"
+#include "nsPIDOMWindow.h"
+#include "mozilla/dom/BindingUtils.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(TestInterfaceAsyncIterableDouble, mParent)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(TestInterfaceAsyncIterableDouble)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(TestInterfaceAsyncIterableDouble)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TestInterfaceAsyncIterableDouble)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+TestInterfaceAsyncIterableDouble::TestInterfaceAsyncIterableDouble(
+    nsPIDOMWindowInner* aParent)
+    : mParent(aParent) {
+  mValues.AppendElement(std::pair<nsString, nsString>(u"a"_ns, u"b"_ns));
+  mValues.AppendElement(std::pair<nsString, nsString>(u"c"_ns, u"d"_ns));
+  mValues.AppendElement(std::pair<nsString, nsString>(u"e"_ns, u"f"_ns));
+}
+
+// static
+already_AddRefed<TestInterfaceAsyncIterableDouble>
+TestInterfaceAsyncIterableDouble::Constructor(const GlobalObject& aGlobal,
+                                              ErrorResult& aRv) {
+  nsCOMPtr<nsPIDOMWindowInner> window =
+      do_QueryInterface(aGlobal.GetAsSupports());
+  if (!window) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return nullptr;
+  }
+
+  RefPtr<TestInterfaceAsyncIterableDouble> r =
+      new TestInterfaceAsyncIterableDouble(window);
+  return r.forget();
+}
+
+JSObject* TestInterfaceAsyncIterableDouble::WrapObject(
+    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
+  return TestInterfaceAsyncIterableDouble_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+nsPIDOMWindowInner* TestInterfaceAsyncIterableDouble::GetParentObject() const {
+  return mParent;
+}
+
+already_AddRefed<Promise>
+TestInterfaceAsyncIterableDouble::GetNextIterationResult(Iterator* aIterator,
+                                                         ErrorResult& aRv) {
+  RefPtr<Promise> promise = Promise::Create(mParent->AsGlobal(), aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  NS_DispatchToMainThread(NewRunnableMethod<RefPtr<Iterator>, RefPtr<Promise>>(
+      "TestInterfaceAsyncIterableDouble::GetNextIterationResult", this,
+      &TestInterfaceAsyncIterableDouble::ResolvePromise, aIterator, promise));
+
+  return promise.forget();
+}
+
+void TestInterfaceAsyncIterableDouble::ResolvePromise(Iterator* aIterator,
+                                                      Promise* aPromise) {
+  IteratorData& data = aIterator->Data();
+
+  // Test data: ['a', 'b'], ['c', 'd'], ['e', 'f']
+  uint32_t idx = data.mIndex;
+  if (idx >= mValues.Length()) {
+    iterator_utils::ResolvePromiseForFinished(aPromise);
+  } else {
+    switch (aIterator->GetIteratorType()) {
+      case IterableIteratorBase::IteratorType::Keys:
+        aPromise->MaybeResolve(mValues[idx].first);
+        break;
+      case IterableIteratorBase::IteratorType::Values:
+        aPromise->MaybeResolve(mValues[idx].second);
+        break;
+      case IterableIteratorBase::IteratorType::Entries:
+        iterator_utils::ResolvePromiseWithKeyAndValue(
+            aPromise, mValues[idx].first, mValues[idx].second);
+        break;
+    }
+
+    data.mIndex++;
+  }
+}
+
+}  // namespace mozilla::dom