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-rw-r--r--xpcom/tests/gtest/TestThreads_mac.mm53
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=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 https://mozilla.org/MPL/2.0/. */
+
+#include <Foundation/Foundation.h>
+
+#include "gtest/gtest.h"
+#include "mozilla/SyncRunnable.h"
+#include "nsIThread.h"
+#include "nsIThreadManager.h"
+
+using namespace mozilla;
+
+// Tests whether an nsThread ran a block in its NSRunLoop.
+// ThreadCreationOptions.isUiThread gets set to aIsUiThread.
+// Returns true if a block ran on the NSRunLoop.
+bool UiThreadRunsRunLoop(bool aIsUiThread) {
+ nsCOMPtr<nsIThread> thread;
+ nsIThreadManager::ThreadCreationOptions options;
+ options.isUiThread = aIsUiThread;
+ MOZ_ALWAYS_SUCCEEDS(
+ NS_NewNamedThread("Testing Thread", getter_AddRefs(thread), nullptr, options));
+
+ __block bool blockRanInRunLoop = false;
+ {
+ // We scope this so `loop` doesn't live past `thread-Shutdown()` since this file is compiled
+ // without ARC.
+ NSRunLoop* loop = nil;
+ auto syncRunnable = MakeRefPtr<SyncRunnable>(NS_NewRunnableFunction(__func__, [&] {
+ // If the thread doesn't already have an NSRunLoop, one will be created.
+ loop = NSRunLoop.currentRunLoop;
+ }));
+ MOZ_ALWAYS_SUCCEEDS(syncRunnable->DispatchToThread(thread));
+
+ [loop performBlock:^void() {
+ blockRanInRunLoop = true;
+ }];
+ }
+
+ thread->Shutdown();
+ return blockRanInRunLoop;
+}
+
+TEST(ThreadsMac, OptionsIsUiThread)
+{
+ const bool isUiThread = true;
+ const bool isNoUiThread = false;
+
+ EXPECT_TRUE(UiThreadRunsRunLoop(isUiThread));
+ EXPECT_FALSE(UiThreadRunsRunLoop(isNoUiThread));
+}