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1 // Copyright (c) 2010 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 BASE_TEST_MULTIPROCESS_TEST_H_ | |
6 #define BASE_TEST_MULTIPROCESS_TEST_H_ | |
7 #pragma once | |
8 | |
9 #include <string> | |
10 | |
11 #include "base/basictypes.h" | |
12 #include "base/process.h" | |
13 #include "base/process_util.h" | |
14 #include "build/build_config.h" | |
15 #include "testing/platform_test.h" | |
16 | |
17 class CommandLine; | |
18 | |
19 namespace base { | |
20 | |
21 // A MultiProcessTest is a test class which makes it easier to | |
22 // write a test which requires code running out of process. | |
23 // | |
24 // To create a multiprocess test simply follow these steps: | |
25 // | |
26 // 1) Derive your test from MultiProcessTest. Example: | |
27 // | |
28 // class MyTest : public MultiProcessTest { | |
29 // }; | |
30 // | |
31 // TEST_F(MyTest, TestCaseName) { | |
32 // ... | |
33 // } | |
34 // | |
35 // 2) Create a mainline function for the child processes and include | |
36 // testing/multiprocess_func_list.h. | |
37 // See the declaration of the MULTIPROCESS_TEST_MAIN macro | |
38 // in that file for an example. | |
39 // 3) Call SpawnChild("foo"), where "foo" is the name of | |
40 // the function you wish to run in the child processes. | |
41 // That's it! | |
42 class MultiProcessTest : public PlatformTest { | |
43 public: | |
44 MultiProcessTest(); | |
45 | |
46 protected: | |
47 // Run a child process. | |
48 // 'procname' is the name of a function which the child will | |
49 // execute. It must be exported from this library in order to | |
50 // run. | |
51 // | |
52 // Example signature: | |
53 // extern "C" int __declspec(dllexport) FooBar() { | |
54 // // do client work here | |
55 // } | |
56 // | |
57 // Returns the handle to the child, or NULL on failure | |
58 ProcessHandle SpawnChild(const std::string& procname, bool debug_on_start); | |
59 | |
60 #if defined(OS_POSIX) | |
61 ProcessHandle SpawnChild(const std::string& procname, | |
62 const file_handle_mapping_vector& fds_to_map, | |
63 bool debug_on_start); | |
64 #endif | |
65 | |
66 CommandLine MakeCmdLine(const std::string& procname, bool debug_on_start); | |
67 | |
68 private: | |
69 #if defined(OS_WIN) | |
70 ProcessHandle SpawnChildImpl(const std::string& procname, | |
71 bool debug_on_start); | |
72 | |
73 #elif defined(OS_POSIX) | |
74 // TODO(port): with the CommandLine refactoring, this code is very similar | |
75 // to the Windows code. Investigate whether this can be made shorter. | |
76 ProcessHandle SpawnChildImpl(const std::string& procname, | |
77 const file_handle_mapping_vector& fds_to_map, | |
78 bool debug_on_start); | |
79 #endif | |
80 | |
81 DISALLOW_COPY_AND_ASSIGN(MultiProcessTest); | |
82 }; | |
83 | |
84 } // namespace base | |
85 | |
86 #endif // BASE_TEST_MULTIPROCESS_TEST_H_ | |
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