components/proximity_auth/logging/logging_unittest.cc

   1 // Copyright 2015 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/proximity_auth/logging/logging.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "components/proximity_auth/logging/log_buffer.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 namespace proximity_auth {
  13
  14 namespace {
  15
  16 const char kLog1[] = "Mahogony destined to make a sturdy table";
  17 const char kLog2[] = "Construction grade cedar";
  18 const char kLog3[] = "Pine infested by hungry beetles";
  19
  20 // Called for every log message added to the standard logging system. The new
  21 // log is saved in |g_standard_logs| and consumed so it does not flood stdout.
  22 base::LazyInstance<std::vector<std::string>> g_standard_logs =
  23     LAZY_INSTANCE_INITIALIZER;
  24 bool HandleStandardLogMessage(int severity,
  25                               const char* file,
  26                               int line,
  27                               size_t message_start,
  28                               const std::string& str) {
  29   g_standard_logs.Get().push_back(str);
  30   return true;
  31 }
  32
  33 }  // namespace
  34
  35 class ProximityAuthLoggingTest : public testing::Test {
  36  public:
  37   ProximityAuthLoggingTest() : previous_handler_(NULL) {}
  38
  39   void SetUp() override {
  40     LogBuffer::GetInstance()->Clear();
  41     g_standard_logs.Get().clear();
  42
  43     previous_handler_ = logging::GetLogMessageHandler();
  44     logging::SetLogMessageHandler(&HandleStandardLogMessage);
  45   }
  46
  47   void TearDown() override { logging::SetLogMessageHandler(previous_handler_); }
  48
  49  private:
  50   logging::LogMessageHandlerFunction previous_handler_;
  51 };
  52
  53 TEST_F(ProximityAuthLoggingTest, LogsSavedToBuffer) {
  54   int base_line_number = __LINE__;
  55   PA_LOG(INFO) << kLog1;
  56   PA_LOG(WARNING) << kLog2;
  57   PA_LOG(ERROR) << kLog3;
  58
  59   auto logs = LogBuffer::GetInstance()->logs();
  60   ASSERT_EQ(3u, logs->size());
  61
  62   auto iterator = logs->begin();
  63   const LogBuffer::LogMessage& log_message1 = *iterator;
  64   EXPECT_EQ(kLog1, log_message1.text);
  65   EXPECT_EQ(__FILE__, log_message1.file);
  66   EXPECT_EQ(base_line_number + 1, log_message1.line);
  67   EXPECT_EQ(logging::LOG_INFO, log_message1.severity);
  68
  69   ++iterator;
  70   const LogBuffer::LogMessage& log_message2 = *iterator;
  71   EXPECT_EQ(kLog2, log_message2.text);
  72   EXPECT_EQ(__FILE__, log_message2.file);
  73   EXPECT_EQ(base_line_number + 2, log_message2.line);
  74   EXPECT_EQ(logging::LOG_WARNING, log_message2.severity);
  75
  76   ++iterator;
  77   const LogBuffer::LogMessage& log_message3 = *iterator;
  78   EXPECT_EQ(kLog3, log_message3.text);
  79   EXPECT_EQ(__FILE__, log_message3.file);
  80   EXPECT_EQ(base_line_number + 3, log_message3.line);
  81   EXPECT_EQ(logging::LOG_ERROR, log_message3.severity);
  82 }
  83
  84 TEST_F(ProximityAuthLoggingTest, LogWhenBufferIsFull) {
  85   LogBuffer* log_buffer = LogBuffer::GetInstance();
  86   EXPECT_EQ(0u, log_buffer->logs()->size());
  87
  88   for (size_t i = 0; i < log_buffer->MaxBufferSize(); ++i) {
  89     PA_LOG(INFO) << "log " << i;
  90   }
  91
  92   EXPECT_EQ(log_buffer->MaxBufferSize(), log_buffer->logs()->size());
  93   PA_LOG(INFO) << kLog1;
  94   EXPECT_EQ(log_buffer->MaxBufferSize(), log_buffer->logs()->size());
  95
  96   auto iterator = log_buffer->logs()->begin();
  97   for (size_t i = 0; i < log_buffer->MaxBufferSize() - 1; ++iterator, ++i) {
  98     std::string expected_text = "log " + base::IntToString(i + 1);
  99     EXPECT_EQ(expected_text, (*iterator).text);
 100   }
 101   EXPECT_EQ(kLog1, (*iterator).text);
 102 }
 103
 104 TEST_F(ProximityAuthLoggingTest, StandardLogsCreated) {
 105   PA_LOG(INFO) << kLog1;
 106   PA_LOG(WARNING) << kLog2;
 107   PA_LOG(ERROR) << kLog3;
 108
 109   ASSERT_EQ(3u, g_standard_logs.Get().size());
 110   EXPECT_NE(std::string::npos, g_standard_logs.Get()[0].find(kLog1));
 111   EXPECT_NE(std::string::npos, g_standard_logs.Get()[1].find(kLog2));
 112   EXPECT_NE(std::string::npos, g_standard_logs.Get()[2].find(kLog3));
 113 }
 114
 115 }  // namespace proximity_auth