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1 // Copyright (c) 2014 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 "components/browser_watcher/watcher_metrics_provider_win.h" | |
6 | |
7 #include "base/process/process_handle.h" | |
8 #include "base/strings/stringprintf.h" | |
9 #include "base/test/histogram_tester.h" | |
10 #include "base/test/test_reg_util_win.h" | |
11 #include "testing/gtest/include/gtest/gtest.h" | |
12 | |
13 namespace browser_watcher { | |
14 | |
15 namespace { | |
16 | |
17 const wchar_t kRegistryPath[] = L"Software\\WatcherMetricsProviderWinTest"; | |
18 | |
19 class WatcherMetricsProviderWinTest : public testing::Test { | |
20 public: | |
21 typedef testing::Test Super; | |
22 | |
23 virtual void SetUp() override { | |
24 Super::SetUp(); | |
25 | |
26 override_manager_.OverrideRegistry(HKEY_CURRENT_USER); | |
27 } | |
28 | |
29 virtual void TearDown() override { | |
erikwright (departed)
2014/11/18 21:13:36
Remove?
Sigurður Ásgeirsson
2014/11/18 21:52:37
Done.
| |
30 Super::TearDown(); | |
31 } | |
32 | |
33 void AddProcessExitCode(bool use_own_pid, int exit_code) { | |
34 int pid = 0; | |
35 if (use_own_pid) { | |
36 pid = base::GetCurrentProcId(); | |
37 } else { | |
38 // Make sure not to accidentally collide with own pid. | |
39 do { | |
40 pid = rand(); | |
erikwright (departed)
2014/11/18 21:13:36
include whatever is required for rand()
Sigurður Ásgeirsson
2014/11/18 21:52:37
Done.
| |
41 } while (pid == static_cast<int>(base::GetCurrentProcId())); | |
42 } | |
43 | |
44 base::win::RegKey key(HKEY_CURRENT_USER, kRegistryPath, KEY_WRITE); | |
erikwright (departed)
2014/11/18 21:13:36
include for RegKey
Sigurður Ásgeirsson
2014/11/18 21:52:37
Done.
| |
45 | |
46 // Make up a unique key, starting with the given pid. | |
47 base::string16 key_name(base::StringPrintf(L"%d-%d", pid, rand())); | |
erikwright (departed)
2014/11/18 21:13:36
include string16
Sigurður Ásgeirsson
2014/11/18 21:52:37
Done.
| |
48 | |
49 // Write the exit code to registry. | |
50 ULONG result = key.WriteValue(key_name.c_str(), exit_code); | |
51 ASSERT_EQ(result, ERROR_SUCCESS); | |
52 } | |
53 | |
54 size_t ExitCodeRegistryPathValueCount() { | |
55 base::win::RegKey key(HKEY_CURRENT_USER, kRegistryPath, KEY_READ); | |
56 return key.GetValueCount(); | |
57 } | |
58 | |
59 protected: | |
60 registry_util::RegistryOverrideManager override_manager_; | |
61 base::HistogramTester histogram_tester_; | |
62 }; | |
63 | |
64 } // namespace | |
65 | |
66 TEST_F(WatcherMetricsProviderWinTest, RecordsStabilityHistogram) { | |
67 // Record multiple success exits. | |
68 for (size_t i = 0; i < 11; ++i) | |
69 AddProcessExitCode(false, 0); | |
70 | |
71 // Record a single failure. | |
72 AddProcessExitCode(false, 100); | |
73 | |
74 WatcherMetricsProviderWin provider(kRegistryPath); | |
75 | |
76 provider.ProvideStabilityMetrics(NULL); | |
77 histogram_tester_.ExpectBucketCount( | |
78 WatcherMetricsProviderWin::kBrowserExitCodeHistogramName, 0, 11); | |
79 histogram_tester_.ExpectBucketCount( | |
80 WatcherMetricsProviderWin::kBrowserExitCodeHistogramName, 100, 1); | |
81 histogram_tester_.ExpectTotalCount( | |
82 WatcherMetricsProviderWin::kBrowserExitCodeHistogramName, 12); | |
83 | |
84 // Verify that the reported values are gone. | |
85 EXPECT_EQ(ExitCodeRegistryPathValueCount(), 0); | |
86 } | |
87 | |
88 TEST_F(WatcherMetricsProviderWinTest, DoesNotReportOwnProcessId) { | |
89 // Record multiple success exits. | |
90 for (size_t i = 0; i < 11; ++i) | |
91 AddProcessExitCode(i, 0); | |
92 | |
93 // Record own process as STILL_ACTIVE. | |
94 AddProcessExitCode(true, STILL_ACTIVE); | |
95 | |
96 WatcherMetricsProviderWin provider(kRegistryPath); | |
97 | |
98 provider.ProvideStabilityMetrics(NULL); | |
99 histogram_tester_.ExpectUniqueSample( | |
100 WatcherMetricsProviderWin::kBrowserExitCodeHistogramName, 0, 11); | |
101 | |
102 // Verify that the reported values are gone. | |
103 EXPECT_EQ(ExitCodeRegistryPathValueCount(), 1); | |
104 } | |
105 | |
106 } // namespace browser_watcher | |
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