1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef MOJO_COMMON_TEST_MULTIPROCESS_TEST_HELPER_H_ 6 #define MOJO_COMMON_TEST_MULTIPROCESS_TEST_HELPER_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "base/process/process_handle.h" 13 #include "base/test/multiprocess_test.h" 14 #include "base/test/test_timeouts.h" 15 #include "mojo/embedder/scoped_platform_handle.h" 16 #include "testing/multiprocess_func_list.h" 17 18 namespace mojo { 19 20 namespace embedder { 21 class PlatformChannelPair; 22 } 23 24 namespace test { 25 26 class MultiprocessTestHelper { 27 public: 28 MultiprocessTestHelper(); 29 ~MultiprocessTestHelper(); 30 31 // Start a child process and run the "main" function "named" |test_child_name| 32 // declared using |MOJO_MULTIPROCESS_TEST_CHILD_MAIN()| or 33 // |MOJO_MULTIPROCESS_TEST_CHILD_TEST()| (below). 34 void StartChild(const std::string& test_child_name); 35 // Wait for the child process to terminate. 36 // Returns the exit code of the child process. Note that, though it's declared 37 // to be an |int|, the exit code is subject to mangling by the OS. E.g., we 38 // usually return -1 on error in the child (e.g., if |test_child_name| was not 39 // found), but this is mangled to 255 on Linux. You should only rely on codes 40 // 0-127 being preserved, and -1 being outside the range 0-127. 41 int WaitForChildShutdown(); 42 43 // Like |WaitForChildShutdown()|, but returns true on success (exit code of 0) 44 // and false otherwise. You probably want to do something like 45 // |EXPECT_TRUE(WaitForChildTestShutdown());|. Mainly for use with 46 // |MOJO_MULTIPROCESS_TEST_CHILD_TEST()|. 47 bool WaitForChildTestShutdown(); 48 49 // For use by |MOJO_MULTIPROCESS_TEST_CHILD_MAIN()| only: 50 static void ChildSetup(); 51 52 // For use in the main process: 53 embedder::ScopedPlatformHandle server_platform_handle; 54 55 // For use (and only valid) in the child process: 56 static embedder::ScopedPlatformHandle client_platform_handle; 57 58 private: 59 scoped_ptr<embedder::PlatformChannelPair> platform_channel_pair_; 60 61 // Valid after |StartChild()| and before |WaitForChildShutdown()|. 62 base::ProcessHandle test_child_handle_; 63 64 DISALLOW_COPY_AND_ASSIGN(MultiprocessTestHelper); 65 }; 66 67 // Use this to declare the child process's "main()" function for tests using 68 // |MultiprocessTestHelper|. It returns an |int|, which will be the process's 69 // exit code (but see the comment about |WaitForChildShutdown()|). 70 #define MOJO_MULTIPROCESS_TEST_CHILD_MAIN(test_child_name) \ 71 MULTIPROCESS_TEST_MAIN_WITH_SETUP( \ 72 test_child_name ## TestChildMain, \ 73 ::mojo::test::MultiprocessTestHelper::ChildSetup) 74 75 // Use this (and |WaitForChildTestShutdown()|) for the child process's "main()", 76 // if you want to use |EXPECT_...()| or |ASSERT_...()|; it has a |void| return 77 // type. (Note that while an |ASSERT_...()| failure will abort the test in the 78 // child, it will not abort the test in the parent.) 79 #define MOJO_MULTIPROCESS_TEST_CHILD_TEST(test_child_name) \ 80 void test_child_name ## TestChildTest(); \ 81 MOJO_MULTIPROCESS_TEST_CHILD_MAIN(test_child_name) { \ 82 test_child_name ## TestChildTest(); \ 83 return (::testing::Test::HasFatalFailure() || \ 84 ::testing::Test::HasNonfatalFailure()) ? 1 : 0; \ 85 } \ 86 void test_child_name ## TestChildTest() 87 88 } // namespace test 89 } // namespace mojo 90 91 #endif // MOJO_COMMON_TEST_MULTIPROCESS_TEST_HELPER_H_ 92
