content/browser/mach_broker_mac_unittest.cc

   1 // Copyright (c) 2009 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 "content/browser/mach_broker_mac.h"
   6
   7 #include "base/synchronization/lock.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace content {
  11
  12 class MachBrokerTest : public testing::Test {
  13  public:
  14   // Helper function to acquire/release locks and call |PlaceholderForPid()|.
  15   void AddPlaceholderForPid(base::ProcessHandle pid, int child_process_id) {
  16     base::AutoLock lock(broker_.GetLock());
  17     broker_.AddPlaceholderForPid(pid, child_process_id);
  18   }
  19
  20   void InvalidateChildProcessId(int child_process_id) {
  21     broker_.InvalidateChildProcessId(child_process_id);
  22   }
  23
  24   int GetChildProcessCount(int child_process_id) {
  25     return broker_.child_process_id_map_.count(child_process_id);
  26   }
  27
  28   // Helper function to acquire/release locks and call |FinalizePid()|.
  29   void FinalizePid(base::ProcessHandle pid,
  30                    mach_port_t task_port) {
  31     base::AutoLock lock(broker_.GetLock());
  32     broker_.FinalizePid(pid, task_port);
  33   }
  34
  35  protected:
  36   MachBroker broker_;
  37 };
  38
  39 TEST_F(MachBrokerTest, Locks) {
  40   // Acquire and release the locks.  Nothing bad should happen.
  41   base::AutoLock lock(broker_.GetLock());
  42 }
  43
  44 TEST_F(MachBrokerTest, AddPlaceholderAndFinalize) {
  45   // Add a placeholder for PID 1.
  46   AddPlaceholderForPid(1, 1);
  47   EXPECT_EQ(0u, broker_.TaskForPid(1));
  48
  49   // Finalize PID 1.
  50   FinalizePid(1, 100u);
  51   EXPECT_EQ(100u, broker_.TaskForPid(1));
  52
  53   // Should be no entry for PID 2.
  54   EXPECT_EQ(0u, broker_.TaskForPid(2));
  55 }
  56
  57 TEST_F(MachBrokerTest, InvalidateChildProcessId) {
  58   // Add a placeholder for PID 1 and child process id 50.
  59   AddPlaceholderForPid(1, 50);
  60   FinalizePid(1, 100u);
  61
  62   EXPECT_EQ(100u, broker_.TaskForPid(1));
  63   InvalidateChildProcessId(50);
  64   EXPECT_EQ(0u, broker_.TaskForPid(1));
  65 }
  66
  67 TEST_F(MachBrokerTest, ValidateChildProcessIdMap) {
  68   // Add a placeholder for PID 1 and child process id 50.
  69   AddPlaceholderForPid(1, 50);
  70   FinalizePid(1, 100u);
  71
  72   EXPECT_EQ(1, GetChildProcessCount(50));
  73   InvalidateChildProcessId(50);
  74   EXPECT_EQ(0, GetChildProcessCount(50));
  75 }
  76
  77 TEST_F(MachBrokerTest, FinalizeUnknownPid) {
  78   // Finalizing an entry for an unknown pid should not add it to the map.
  79   FinalizePid(1u, 100u);
  80   EXPECT_EQ(0u, broker_.TaskForPid(1u));
  81 }
  82
  83 }  // namespace content