1 files changed, 41 insertions, 0 deletions
diff --git a/chromium/content/browser/browser_main_loop_unittest.cc b/chromium/content/browser/browser_main_loop_unittest.cc
new file mode 100644
index 00000000000..3e2f04f04ec
--- /dev/null
+++ b/chromium/content/browser/browser_main_loop_unittest.cc
@@ -0,0 +1,41 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/browser_main_loop.h"
+
+#include "base/command_line.h"
+#include "base/message_loop/message_loop.h"
+#include "base/sys_info.h"
+#include "base/task_scheduler/task_scheduler.h"
+#include "base/test/scoped_command_line.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/common/main_function_params.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+// Verify that a single-process browser process has at least as many threads as
+// the number of cores in its foreground pool.
+TEST(BrowserMainLoopTest, CreateThreadsInSingleProcess) {
+  {
+    base::MessageLoop message_loop;
+    base::test::ScopedCommandLine scoped_command_line;
+    scoped_command_line.GetProcessCommandLine()->AppendSwitch(
+        switches::kSingleProcess);
+    MainFunctionParams main_function_params(
+        *scoped_command_line.GetProcessCommandLine());
+    BrowserMainLoop browser_main_loop(main_function_params);
+    browser_main_loop.MainMessageLoopStart();
+    browser_main_loop.CreateThreads();
+    EXPECT_GE(base::TaskScheduler::GetInstance()
+                  ->GetMaxConcurrentTasksWithTraitsDeprecated(
+                      {base::TaskPriority::USER_VISIBLE}),
+              base::SysInfo::NumberOfProcessors());
+    browser_main_loop.ShutdownThreadsAndCleanUp();
+  }
+  base::TaskScheduler::GetInstance()->JoinForTesting();
+  base::TaskScheduler::SetInstance(nullptr);
+}
+
+}  // namespace content