Added the ToolsSanityTest test case to base_unittests.

tools_sanity_test.cc contains positive tests for tools used on the buildbots.
ToolsSanityTest.MemoryLeak contains an memory leak reportable by Memcheck and 
heap leak checker.
ToolsSanityTest.DataRace contains a data race reportable by ThreadSanitizer.

The corresponding suppressions are in
tools/valgrind/{memcheck,tsan}/suppressions.txt
The idea is to check the tools' reports for their presence when testing
base_unittests.

Review URL: http://codereview.chromium.org/491044

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@34826 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 50 insertions, 0 deletions

diff --git a/base/tools_sanity_unittest.cc b/base/tools_sanity_unittest.cc
new file mode 100644
index 0000000..91f56b4
--- /dev/null
+++ b/base/tools_sanity_unittest.cc
@@ -0,0 +1,50 @@
+// Copyright (c) 2009 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 "base/message_loop.h"
+#include "base/thread.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+// We use caps here just to ensure that the method name doesn't interfere with
+// the wildcarded suppressions.
+class TOOLS_SANITY_TEST_CONCURRENT_THREAD : public PlatformThread::Delegate {
+ public:
+  explicit TOOLS_SANITY_TEST_CONCURRENT_THREAD(bool *value) : value_(value) {}
+  ~TOOLS_SANITY_TEST_CONCURRENT_THREAD() {}
+  void ThreadMain() {
+    *value_ = true;
+  }
+ private:
+  bool* value_;
+};
+
+}
+
+// A memory leak detector should report an error in this test.
+TEST(ToolsSanityTest, MemoryLeak) {
+  int *leak = new int[256];  // Leak some memory intentionally.
+  leak[4] = 1;  // Make sure the allocated memory is used.
+}
+
+// A data race detector should report an error in this test.
+TEST(ToolsSanityTest, DataRace) {
+  bool shared = false;
+  PlatformThreadHandle a;
+  PlatformThreadHandle b;
+  PlatformThread::Delegate *thread1 =
+      new TOOLS_SANITY_TEST_CONCURRENT_THREAD(&shared);
+  PlatformThread::Delegate *thread2 =
+      new TOOLS_SANITY_TEST_CONCURRENT_THREAD(&shared);
+
+  PlatformThread::Create(0, thread1, &a);
+  PlatformThread::Create(0, thread2, &b);
+  PlatformThread::Join(a);
+  PlatformThread::Join(b);
+  EXPECT_TRUE(shared);
+  delete thread1;
+  delete thread2;
+}
+