Fork //base/gtest_prod_util.h into //mojo/edk/util/gtest_prod_utils.h.

mojo/edk/util/gtest_prod_utils.h

+// Copyright (c) 2012 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.
+
+// Utilities for (non-test) code to help with testing that code with gtest.
+// (Note that this file does not imply any dependency on gtest.)
+
+#ifndef MOJO_EDK_UTIL_GTEST_PROD_UTILS_H_
+#define MOJO_EDK_UTIL_GTEST_PROD_UTILS_H_
+
+// Like gtest's |FRIEND_TEST()| macro, but friends the given test with all
+// possible prefixes, so that when the test prefix is changed the friend
+// declarations won't need to be updated. For example:
+//
+//   class MyClass {
+//    private:
+//     void MyMethod();
+//     FRIEND_TEST_ALL_PREFIXES(MyClassTest, MyMethod);
+//   };
+#define FRIEND_TEST_ALL_PREFIXES(test_case_name, test_name)    \
+  friend class test_case_name##_##test_name##_Test;            \
+  friend class test_case_name##_##DISABLED_##test_name##_Test; \
+  friend class test_case_name##_##FLAKY_##test_name##_Test
+
+// Macro to forward-declare tests (with all possible prefixes).
+//
+// C++ compilers will refuse to compile the following code:
+//
+//   namespace foo {
+//   class MyClass {
+//    private:
+//     FRIEND_TEST_ALL_PREFIXES(MyClassTest, TestMethod);
+//     bool private_var;
+//   };
+//   }  // namespace foo
+//
+//   class MyClassTest::TestMethod() {
+//     foo::MyClass foo_class;
+//     foo_class.private_var = true;
+//   }
+//
+// unless you forward-declare |MyClassTest::TestMethod| outside of the |foo|
+// namespace. Use |FORWARD_DECLARE_TEST()| to do this. For example, in the code,
+// add the following at the top:
+//
+//   FORWARD_DECLARE_TEST(MyClassTest, TestMethod);
+#define FORWARD_DECLARE_TEST(test_case_name, test_name) \
+  class test_case_name##_##test_name##_Test;            \
+  class test_case_name##_##DISABLED_##test_name##_Test; \
+  class test_case_name##_##FLAKY_##test_name##_Test
+
+#endif  // MOJO_EDK_UTIL_GTEST_PROD_UTILS_H_