1 files changed, 158 insertions, 0 deletions
diff --git a/xpcom/tests/windows/TestCOM.cpp b/xpcom/tests/windows/TestCOM.cpp
new file mode 100644
index 0000000000..9f0b9854c8
--- /dev/null
+++ b/xpcom/tests/windows/TestCOM.cpp
@@ -0,0 +1,158 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 <windows.h>
+#include <unknwn.h>
+#include <stdio.h>
+#include "nsISupports.h"
+#include "nsIFactory.h"
+
+// unknwn.h is needed to build with WIN32_LEAN_AND_MEAN
+#include <unknwn.h>
+
+#include "gtest/gtest.h"
+
+// {5846BA30-B856-11d1-A98A-00805F8A7AC4}
+#define NS_ITEST_COM_IID \
+{ 0x5846ba30, 0xb856, 0x11d1, \
+  { 0xa9, 0x8a, 0x0, 0x80, 0x5f, 0x8a, 0x7a, 0xc4 } }
+
+class nsITestCom: public nsISupports
+{
+public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_ITEST_COM_IID)
+  NS_IMETHOD Test() = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsITestCom, NS_ITEST_COM_IID)
+
+/*
+ * nsTestCom
+ */
+
+class nsTestCom final : public nsITestCom {
+  NS_DECL_ISUPPORTS
+
+public:
+  nsTestCom() {
+  }
+
+  NS_IMETHOD Test() {
+    return NS_OK;
+  }
+
+  static int sDestructions;
+
+private:
+  ~nsTestCom() {
+    sDestructions++;
+  }
+};
+
+int nsTestCom::sDestructions;
+
+NS_IMPL_QUERY_INTERFACE(nsTestCom, nsITestCom)
+
+MozExternalRefCountType nsTestCom::AddRef()
+{
+  nsrefcnt res = ++mRefCnt;
+  NS_LOG_ADDREF(this, mRefCnt, "nsTestCom", sizeof(*this));
+  return res;
+}
+
+MozExternalRefCountType nsTestCom::Release()
+{
+  nsrefcnt res = --mRefCnt;
+  NS_LOG_RELEASE(this, mRefCnt, "nsTestCom");
+  if (res == 0) {
+    delete this;
+  }
+  return res;
+}
+
+class nsTestComFactory final : public nsIFactory {
+  ~nsTestComFactory() { sDestructions++; }
+  NS_DECL_ISUPPORTS
+public:
+  nsTestComFactory() {
+  }
+
+  NS_IMETHOD CreateInstance(nsISupports *aOuter,
+                            const nsIID &aIID,
+                            void **aResult);
+
+  NS_IMETHOD LockFactory(bool aLock) {
+    return NS_OK;
+  }
+
+  static int sDestructions;
+};
+
+int nsTestComFactory::sDestructions;
+
+NS_IMPL_ISUPPORTS(nsTestComFactory, nsIFactory)
+
+nsresult nsTestComFactory::CreateInstance(nsISupports *aOuter,
+					  const nsIID &aIID,
+					  void **aResult)
+{
+  if (aOuter != nullptr) {
+    return NS_ERROR_NO_AGGREGATION;
+  }
+
+  nsTestCom *t = new nsTestCom();
+
+  if (t == nullptr) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  NS_ADDREF(t);
+  nsresult res = t->QueryInterface(aIID, aResult);
+  NS_RELEASE(t);
+
+  return res;
+}
+
+TEST(TestCOM, WindowsInterop)
+{
+  nsTestComFactory *inst = new nsTestComFactory();
+
+  // Test we can QI nsIFactory to an IClassFactory.
+  IClassFactory *iFactory = nullptr;
+  nsresult rv = inst->QueryInterface(NS_GET_IID(nsIFactory),
+                                      (void **) &iFactory);
+  ASSERT_TRUE(NS_SUCCEEDED(rv));
+  ASSERT_TRUE(iFactory);
+
+  // Test we can CreateInstance with an IUnknown.
+  IUnknown *iUnknown = nullptr;
+
+  HRESULT hr = iFactory->LockServer(TRUE);
+  ASSERT_TRUE(SUCCEEDED(hr));
+  hr = iFactory->CreateInstance(nullptr, IID_IUnknown, (void **) &iUnknown);
+  ASSERT_TRUE(SUCCEEDED(hr));
+  ASSERT_TRUE(iUnknown);
+  hr = iFactory->LockServer(FALSE);
+  ASSERT_TRUE(SUCCEEDED(hr));
+
+  // Test we can QI an IUnknown to nsITestCom.
+  nsITestCom *iTestCom = nullptr;
+  GUID testGUID = NS_ITEST_COM_IID;
+  hr = iUnknown->QueryInterface(testGUID,
+				 (void **) &iTestCom);
+  ASSERT_TRUE(SUCCEEDED(hr));
+  ASSERT_TRUE(iTestCom);
+
+  // Make sure we can call our test function (and the pointer is valid).
+  rv = iTestCom->Test();
+  ASSERT_TRUE(NS_SUCCEEDED(rv));
+
+  iUnknown->Release();
+  iTestCom->Release();
+  iFactory->Release();
+
+  ASSERT_EQ(nsTestComFactory::sDestructions, 1);
+  ASSERT_EQ(nsTestCom::sDestructions, 1);
+}