Create a simple abstraction to a native OS thread, mostly useful for unittesting when you don't want a message loop.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1217 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 108 insertions, 0 deletions

diff --git a/base/simple_thread_unittest.cc b/base/simple_thread_unittest.cc
new file mode 100644
index 0000000..c894637
--- /dev/null
+++ b/base/simple_thread_unittest.cc
@@ -0,0 +1,108 @@
+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <vector>
+
+#include "base/call_wrapper.h"
+#include "base/scoped_ptr.h"
+#include "base/simple_thread.h"
+#include "base/string_util.h"
+#include "base/waitable_event.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+void SetInt(int* p, int x) {
+  *p = x;
+}
+
+void SignalEvent(base::WaitableEvent* event) {
+  EXPECT_FALSE(event->IsSignaled());
+  event->Signal();
+  EXPECT_TRUE(event->IsSignaled());
+}
+
+}  // namespace
+
+TEST(SimpleThreadTest, CreateAndJoin) {
+  int stack_int = 0;
+
+  CallWrapper* wrapper = NewFunctionCallWrapper(SetInt, &stack_int, 7);
+  EXPECT_EQ(0, stack_int);
+  scoped_ptr<base::SimpleThread> thread(
+      new base::CallWrapperSimpleThread(wrapper));
+  EXPECT_FALSE(thread->HasBeenStarted());
+  EXPECT_FALSE(thread->HasBeenJoined());
+  EXPECT_EQ(0, stack_int);
+
+  thread->Start();
+  EXPECT_TRUE(thread->HasBeenStarted());
+  EXPECT_FALSE(thread->HasBeenJoined());
+
+  thread->Join();
+  EXPECT_TRUE(thread->HasBeenStarted());
+  EXPECT_TRUE(thread->HasBeenJoined());
+  EXPECT_EQ(7, stack_int);
+}
+
+TEST(SimpleThreadTest, WaitForEvent) {
+  // Create a thread, and wait for it to signal us.
+  base::WaitableEvent event(true, false);
+
+  scoped_ptr<base::SimpleThread> thread(new base::CallWrapperSimpleThread(
+      NewFunctionCallWrapper(SignalEvent, &event)));
+
+  EXPECT_FALSE(event.IsSignaled());
+  thread->Start();
+  event.Wait();
+  EXPECT_TRUE(event.IsSignaled());
+  thread->Join();
+}
+
+TEST(SimpleThreadTest, Named) {
+  base::WaitableEvent event(true, false);
+
+  base::SimpleThread::Options options;
+  scoped_ptr<base::SimpleThread> thread(new base::CallWrapperSimpleThread(
+      NewFunctionCallWrapper(SignalEvent, &event), options, "testy"));
+  EXPECT_EQ(thread->name_prefix(), "testy");
+  EXPECT_FALSE(event.IsSignaled());
+
+  thread->Start();
+  EXPECT_EQ(thread->name_prefix(), "testy");
+  EXPECT_EQ(thread->name(), std::string("testy/") + IntToString(thread->tid()));
+  event.Wait();
+
+  EXPECT_TRUE(event.IsSignaled());
+  thread->Join();
+
+  // We keep the name and tid, even after the thread is gone.
+  EXPECT_EQ(thread->name_prefix(), "testy");
+  EXPECT_EQ(thread->name(), std::string("testy/") + IntToString(thread->tid()));
+}