base/win/scoped_process_information_unittest.cc

   1 // Copyright (c) 2012 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 #include <windows.h>
   6
   7 #include <string>
   8
   9 #include "base/command_line.h"
  10 #include "base/process/kill.h"
  11 #include "base/test/multiprocess_test.h"
  12 #include "base/win/scoped_process_information.h"
  13 #include "testing/multiprocess_func_list.h"
  14
  15 namespace {
  16
  17 const DWORD kProcessId = 4321;
  18 const DWORD kThreadId = 1234;
  19 const HANDLE kProcessHandle = reinterpret_cast<HANDLE>(7651);
  20 const HANDLE kThreadHandle = reinterpret_cast<HANDLE>(1567);
  21
  22 void MockCreateProcess(base::win::ScopedProcessInformation* process_info) {
  23   PROCESS_INFORMATION process_information = {};
  24   process_information.dwProcessId = kProcessId;
  25   process_information.dwThreadId = kThreadId;
  26   process_information.hProcess = kProcessHandle;
  27   process_information.hThread = kThreadHandle;
  28   process_info->Set(process_information);
  29 }
  30
  31 }  // namespace
  32
  33 class ScopedProcessInformationTest : public base::MultiProcessTest {
  34  protected:
  35   void DoCreateProcess(const std::string& main_id,
  36                        PROCESS_INFORMATION* process_handle);
  37 };
  38
  39 MULTIPROCESS_TEST_MAIN(ReturnSeven) {
  40   return 7;
  41 }
  42
  43 MULTIPROCESS_TEST_MAIN(ReturnNine) {
  44   return 9;
  45 }
  46
  47 void ScopedProcessInformationTest::DoCreateProcess(
  48     const std::string& main_id, PROCESS_INFORMATION* process_handle) {
  49   std::wstring cmd_line = MakeCmdLine(main_id).GetCommandLineString();
  50   STARTUPINFO startup_info = {};
  51   startup_info.cb = sizeof(startup_info);
  52
  53   EXPECT_TRUE(::CreateProcess(NULL, &cmd_line[0],
  54                               NULL, NULL, false, 0, NULL, NULL,
  55                               &startup_info, process_handle));
  56 }
  57
  58 TEST_F(ScopedProcessInformationTest, InitiallyInvalid) {
  59   base::win::ScopedProcessInformation process_info;
  60   ASSERT_FALSE(process_info.IsValid());
  61 }
  62
  63 TEST_F(ScopedProcessInformationTest, Receive) {
  64   base::win::ScopedProcessInformation process_info;
  65   MockCreateProcess(&process_info);
  66
  67   EXPECT_TRUE(process_info.IsValid());
  68   EXPECT_EQ(kProcessId, process_info.process_id());
  69   EXPECT_EQ(kThreadId, process_info.thread_id());
  70   EXPECT_EQ(kProcessHandle, process_info.process_handle());
  71   EXPECT_EQ(kThreadHandle, process_info.thread_handle());
  72   process_info.Take();
  73 }
  74
  75 TEST_F(ScopedProcessInformationTest, TakeProcess) {
  76   base::win::ScopedProcessInformation process_info;
  77   MockCreateProcess(&process_info);
  78
  79   HANDLE process = process_info.TakeProcessHandle();
  80   EXPECT_EQ(kProcessHandle, process);
  81   EXPECT_EQ(NULL, process_info.process_handle());
  82   EXPECT_EQ(0, process_info.process_id());
  83   EXPECT_TRUE(process_info.IsValid());
  84   process_info.Take();
  85 }
  86
  87 TEST_F(ScopedProcessInformationTest, TakeThread) {
  88   base::win::ScopedProcessInformation process_info;
  89   MockCreateProcess(&process_info);
  90
  91   HANDLE thread = process_info.TakeThreadHandle();
  92   EXPECT_EQ(kThreadHandle, thread);
  93   EXPECT_EQ(NULL, process_info.thread_handle());
  94   EXPECT_EQ(0, process_info.thread_id());
  95   EXPECT_TRUE(process_info.IsValid());
  96   process_info.Take();
  97 }
  98
  99 TEST_F(ScopedProcessInformationTest, TakeBoth) {
 100   base::win::ScopedProcessInformation process_info;
 101   MockCreateProcess(&process_info);
 102
 103   process_info.TakeProcessHandle();
 104   process_info.TakeThreadHandle();
 105   EXPECT_FALSE(process_info.IsValid());
 106   process_info.Take();
 107 }
 108
 109 TEST_F(ScopedProcessInformationTest, TakeWholeStruct) {
 110   base::win::ScopedProcessInformation process_info;
 111   MockCreateProcess(&process_info);
 112
 113   PROCESS_INFORMATION to_discard = process_info.Take();
 114   EXPECT_EQ(kProcessId, to_discard.dwProcessId);
 115   EXPECT_EQ(kThreadId, to_discard.dwThreadId);
 116   EXPECT_EQ(kProcessHandle, to_discard.hProcess);
 117   EXPECT_EQ(kThreadHandle, to_discard.hThread);
 118   EXPECT_FALSE(process_info.IsValid());
 119 }
 120
 121 TEST_F(ScopedProcessInformationTest, Duplicate) {
 122   PROCESS_INFORMATION temp_process_information;
 123   DoCreateProcess("ReturnSeven", &temp_process_information);
 124   base::win::ScopedProcessInformation process_info;
 125   process_info.Set(temp_process_information);
 126
 127   base::win::ScopedProcessInformation duplicate;
 128   duplicate.DuplicateFrom(process_info);
 129
 130   ASSERT_TRUE(process_info.IsValid());
 131   ASSERT_NE(0u, process_info.process_id());
 132   ASSERT_EQ(duplicate.process_id(), process_info.process_id());
 133   ASSERT_NE(0u, process_info.thread_id());
 134   ASSERT_EQ(duplicate.thread_id(), process_info.thread_id());
 135
 136   // Validate that we have separate handles that are good.
 137   int exit_code = 0;
 138   ASSERT_TRUE(base::WaitForExitCode(process_info.TakeProcessHandle(),
 139                                     &exit_code));
 140   ASSERT_EQ(7, exit_code);
 141
 142   exit_code = 0;
 143   ASSERT_TRUE(base::WaitForExitCode(duplicate.TakeProcessHandle(),
 144                                     &exit_code));
 145   ASSERT_EQ(7, exit_code);
 146
 147   ASSERT_TRUE(::CloseHandle(process_info.TakeThreadHandle()));
 148   ASSERT_TRUE(::CloseHandle(duplicate.TakeThreadHandle()));
 149 }
 150
 151 TEST_F(ScopedProcessInformationTest, Set) {
 152   base::win::ScopedProcessInformation base_process_info;
 153   MockCreateProcess(&base_process_info);
 154
 155   PROCESS_INFORMATION base_struct = base_process_info.Take();
 156
 157   base::win::ScopedProcessInformation process_info;
 158   process_info.Set(base_struct);
 159
 160   EXPECT_EQ(kProcessId, process_info.process_id());
 161   EXPECT_EQ(kThreadId, process_info.thread_id());
 162   EXPECT_EQ(kProcessHandle, process_info.process_handle());
 163   EXPECT_EQ(kThreadHandle, process_info.thread_handle());
 164   base_struct = process_info.Take();
 165 }