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// Copyright 2009 Google Inc. All rights reserved.
//
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
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// in the documentation and/or other materials provided with the
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//
// Author: vladl@google.com (Vlad Losev)
//
// The Google C++ Testing Framework (Google Test)
//
// This file verifies Google Test event listeners receive events at the
// right times.
 
#include "gtest/gtest.h"
#include <vector>
 
using ::testing::AddGlobalTestEnvironment;
using ::testing::Environment;
using ::testing::InitGoogleTest;
using ::testing::Test;
using ::testing::TestCase;
using ::testing::TestEventListener;
using ::testing::TestInfo;
using ::testing::TestPartResult;
using ::testing::UnitTest;
 
// Used by tests to register their events.
std::vector<std::string>* g_events = NULL;
 
namespace testing {
namespace internal {
 
class EventRecordingListener : public TestEventListener {
 public:
  explicit EventRecordingListener(const char* name) : name_(name) {}
 
 protected:
  virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {
    g_events->push_back(GetFullMethodName("OnTestProgramStart"));
  }
 
  virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,
                                    int iteration) {
    Message message;
    message << GetFullMethodName("OnTestIterationStart")
            << "(" << iteration << ")";
    g_events->push_back(message.GetString());
  }
 
  virtual void OnEnvironmentsSetUpStart(const UnitTest& /*unit_test*/) {
    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpStart"));
  }
 
  virtual void OnEnvironmentsSetUpEnd(const UnitTest& /*unit_test*/) {
    g_events->push_back(GetFullMethodName("OnEnvironmentsSetUpEnd"));
  }
 
  virtual void OnTestCaseStart(const TestCase& /*test_case*/) {
    g_events->push_back(GetFullMethodName("OnTestCaseStart"));
  }
 
  virtual void OnTestStart(const TestInfo& /*test_info*/) {
    g_events->push_back(GetFullMethodName("OnTestStart"));
  }
 
  virtual void OnTestPartResult(const TestPartResult& /*test_part_result*/) {
    g_events->push_back(GetFullMethodName("OnTestPartResult"));
  }
 
  virtual void OnTestEnd(const TestInfo& /*test_info*/) {
    g_events->push_back(GetFullMethodName("OnTestEnd"));
  }
 
  virtual void OnTestCaseEnd(const TestCase& /*test_case*/) {
    g_events->push_back(GetFullMethodName("OnTestCaseEnd"));
  }
 
  virtual void OnEnvironmentsTearDownStart(const UnitTest& /*unit_test*/) {
    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownStart"));
  }
 
  virtual void OnEnvironmentsTearDownEnd(const UnitTest& /*unit_test*/) {
    g_events->push_back(GetFullMethodName("OnEnvironmentsTearDownEnd"));
  }
 
  virtual void OnTestIterationEnd(const UnitTest& /*unit_test*/,
                                  int iteration) {
    Message message;
    message << GetFullMethodName("OnTestIterationEnd")
            << "("  << iteration << ")";
    g_events->push_back(message.GetString());
  }
 
  virtual void OnTestProgramEnd(const UnitTest& /*unit_test*/) {
    g_events->push_back(GetFullMethodName("OnTestProgramEnd"));
  }
 
 private:
  std::string GetFullMethodName(const char* name) {
    return name_ + "." + name;
  }
 
  std::string name_;
};
 
class EnvironmentInvocationCatcher : public Environment {
 protected:
  virtual void SetUp() {
    g_events->push_back("Environment::SetUp");
  }
 
  virtual void TearDown() {
    g_events->push_back("Environment::TearDown");
  }
};
 
class ListenerTest : public Test {
 protected:
  static void SetUpTestCase() {
    g_events->push_back("ListenerTest::SetUpTestCase");
  }
 
  static void TearDownTestCase() {
    g_events->push_back("ListenerTest::TearDownTestCase");
  }
 
  virtual void SetUp() {
    g_events->push_back("ListenerTest::SetUp");
  }
 
  virtual void TearDown() {
    g_events->push_back("ListenerTest::TearDown");
  }
};
 
TEST_F(ListenerTest, DoesFoo) {
  // Test execution order within a test case is not guaranteed so we are not
  // recording the test name.
  g_events->push_back("ListenerTest::* Test Body");
  SUCCEED();  // Triggers OnTestPartResult.
}
 
TEST_F(ListenerTest, DoesBar) {
  g_events->push_back("ListenerTest::* Test Body");
  SUCCEED();  // Triggers OnTestPartResult.
}
 
}  // namespace internal
 
}  // namespace testing
 
using ::testing::internal::EnvironmentInvocationCatcher;
using ::testing::internal::EventRecordingListener;
 
void VerifyResults(const std::vector<std::string>& data,
                   const char* const* expected_data,
                   size_t expected_data_size) {
  const size_t actual_size = data.size();
  // If the following assertion fails, a new entry will be appended to
  // data.  Hence we save data.size() first.
  EXPECT_EQ(expected_data_size, actual_size);
 
  // Compares the common prefix.
  const size_t shorter_size = expected_data_size <= actual_size ?
      expected_data_size : actual_size;
  size_t i = 0;
  for (; i < shorter_size; ++i) {
    ASSERT_STREQ(expected_data[i], data[i].c_str())
        << "at position " << i;
  }
 
  // Prints extra elements in the actual data.
  for (; i < actual_size; ++i) {
    printf("  Actual event #%lu: %s\n",
        static_cast<unsigned long>(i), data[i].c_str());
  }
}
 
int main(int argc, char **argv) {
  std::vector<std::string> events;
  g_events = &events;
  InitGoogleTest(&argc, argv);
 
  UnitTest::GetInstance()->listeners().Append(
      new EventRecordingListener("1st"));
  UnitTest::GetInstance()->listeners().Append(
      new EventRecordingListener("2nd"));
 
  AddGlobalTestEnvironment(new EnvironmentInvocationCatcher);
 
  GTEST_CHECK_(events.size() == 0)
      << "AddGlobalTestEnvironment should not generate any events itself.";
 
  ::testing::GTEST_FLAG(repeat) = 2;
  int ret_val = RUN_ALL_TESTS();
 
  const char* const expected_events[] = {
    "1st.OnTestProgramStart",
    "2nd.OnTestProgramStart",
    "1st.OnTestIterationStart(0)",
    "2nd.OnTestIterationStart(0)",
    "1st.OnEnvironmentsSetUpStart",
    "2nd.OnEnvironmentsSetUpStart",
    "Environment::SetUp",
    "2nd.OnEnvironmentsSetUpEnd",
    "1st.OnEnvironmentsSetUpEnd",
    "1st.OnTestCaseStart",
    "2nd.OnTestCaseStart",
    "ListenerTest::SetUpTestCase",
    "1st.OnTestStart",
    "2nd.OnTestStart",
    "ListenerTest::SetUp",
    "ListenerTest::* Test Body",
    "1st.OnTestPartResult",
    "2nd.OnTestPartResult",
    "ListenerTest::TearDown",
    "2nd.OnTestEnd",
    "1st.OnTestEnd",
    "1st.OnTestStart",
    "2nd.OnTestStart",
    "ListenerTest::SetUp",
    "ListenerTest::* Test Body",
    "1st.OnTestPartResult",
    "2nd.OnTestPartResult",
    "ListenerTest::TearDown",
    "2nd.OnTestEnd",
    "1st.OnTestEnd",
    "ListenerTest::TearDownTestCase",
    "2nd.OnTestCaseEnd",
    "1st.OnTestCaseEnd",
    "1st.OnEnvironmentsTearDownStart",
    "2nd.OnEnvironmentsTearDownStart",
    "Environment::TearDown",
    "2nd.OnEnvironmentsTearDownEnd",
    "1st.OnEnvironmentsTearDownEnd",
    "2nd.OnTestIterationEnd(0)",
    "1st.OnTestIterationEnd(0)",
    "1st.OnTestIterationStart(1)",
    "2nd.OnTestIterationStart(1)",
    "1st.OnEnvironmentsSetUpStart",
    "2nd.OnEnvironmentsSetUpStart",
    "Environment::SetUp",
    "2nd.OnEnvironmentsSetUpEnd",
    "1st.OnEnvironmentsSetUpEnd",
    "1st.OnTestCaseStart",
    "2nd.OnTestCaseStart",
    "ListenerTest::SetUpTestCase",
    "1st.OnTestStart",
    "2nd.OnTestStart",
    "ListenerTest::SetUp",
    "ListenerTest::* Test Body",
    "1st.OnTestPartResult",
    "2nd.OnTestPartResult",
    "ListenerTest::TearDown",
    "2nd.OnTestEnd",
    "1st.OnTestEnd",
    "1st.OnTestStart",
    "2nd.OnTestStart",
    "ListenerTest::SetUp",
    "ListenerTest::* Test Body",
    "1st.OnTestPartResult",
    "2nd.OnTestPartResult",
    "ListenerTest::TearDown",
    "2nd.OnTestEnd",
    "1st.OnTestEnd",
    "ListenerTest::TearDownTestCase",
    "2nd.OnTestCaseEnd",
    "1st.OnTestCaseEnd",
    "1st.OnEnvironmentsTearDownStart",
    "2nd.OnEnvironmentsTearDownStart",
    "Environment::TearDown",
    "2nd.OnEnvironmentsTearDownEnd",
    "1st.OnEnvironmentsTearDownEnd",
    "2nd.OnTestIterationEnd(1)",
    "1st.OnTestIterationEnd(1)",
    "2nd.OnTestProgramEnd",
    "1st.OnTestProgramEnd"
  };
  VerifyResults(events,
                expected_events,
                sizeof(expected_events)/sizeof(expected_events[0]));
 
  // We need to check manually for ad hoc test failures that happen after
  // RUN_ALL_TESTS finishes.
  if (UnitTest::GetInstance()->Failed())
    ret_val = 1;
 
  return ret_val;
}