RequestContextTest.cpp File Reference

#include <thread>
#include <folly/Memory.h>
#include <folly/io/async/EventBase.h>
#include <folly/io/async/Request.h>
#include <folly/portability/GTest.h>

Go to the source code of this file.

Classes
class	TestData
class	RequestContextTest

Functions
	TEST_F (RequestContextTest, SimpleTest)
	TEST_F (RequestContextTest, RequestContextScopeGuard)
	TEST_F (RequestContextTest, defaultContext)
	TEST_F (RequestContextTest, setIfAbsentTest)
	TEST_F (RequestContextTest, testSetUnset)
	TEST_F (RequestContextTest, deadlockTest)
	TEST_F (RequestContextTest, sharedGlobalTest)
	TEST_F (RequestContextTest, ShallowCopyBasic)
	TEST_F (RequestContextTest, ShallowCopyOverwrite)
	TEST_F (RequestContextTest, ShallowCopyDefaultContext)
	TEST_F (RequestContextTest, ShallowCopyClear)

Variables
RequestToken	testtoken ("test")

Function Documentation

TEST_F	(	RequestContextTest	,
		SimpleTest
	)

Definition at line 95 of file RequestContextTest.cpp.

References a, folly::RequestContext::create(), folly::data(), data_, EXPECT_EQ, EXPECT_NE, EXPECT_TRUE, folly::RequestContext::get(), folly::RequestContext::getContextData(), folly::EventBase::loopForever(), folly::EventBase::runInEventBaseThread(), folly::RequestContext::saveContext(), folly::RequestContext::setContext(), folly::RequestContext::setContextData(), folly::EventBase::terminateLoopSoon(), and testtoken.

                                       {
  EventBase base;

  // There should always be a default context with get()
  EXPECT_TRUE(RequestContext::get() != nullptr);

  // but not with saveContext()
  EXPECT_EQ(RequestContext::saveContext(), nullptr);
  RequestContext::create();
  EXPECT_NE(RequestContext::saveContext(), nullptr);
  RequestContext::create();
  EXPECT_NE(RequestContext::saveContext(), nullptr);

  EXPECT_EQ(nullptr, RequestContext::get()->getContextData("test"));

  RequestContext::get()->setContextData("test", std::make_unique<TestData>(10));
  base.runInEventBaseThread([&]() {
    EXPECT_TRUE(RequestContext::get() != nullptr);
    auto data = dynamic_cast<TestData*>(
                    RequestContext::get()->getContextData(testtoken))
                    ->data_;
    EXPECT_EQ(10, data);
    base.terminateLoopSoon();
  });
  auto th = std::thread([&]() { base.loopForever(); });
  th.join();
  EXPECT_TRUE(RequestContext::get() != nullptr);
  auto a =
      dynamic_cast<TestData*>(RequestContext::get()->getContextData("test"));
  auto data = a->data_;
  EXPECT_EQ(10, data);

  RequestContext::setContext(std::shared_ptr<RequestContext>());
  // There should always be a default context
  EXPECT_TRUE(nullptr != RequestContext::get());
}

TEST_F	(	RequestContextTest	,
		RequestContextScopeGuard
	)

Definition at line 132 of file RequestContextTest.cpp.

References data_, EXPECT_EQ, and EXPECT_FALSE.

                                                     {
  RequestContextScopeGuard g0;
  setData(10);
  {
    RequestContextScopeGuard g1;
    EXPECT_FALSE(hasData());
    setData(20);
    EXPECT_EQ(20, getData().data_);
    EXPECT_EQ(1, getData().set_);
    EXPECT_EQ(0, getData().unset_);
  }
  EXPECT_EQ(10, getData().data_);
  EXPECT_EQ(2, getData().set_);
  EXPECT_EQ(1, getData().unset_);
}

TEST_F	(	RequestContextTest	,
		defaultContext
	)

Definition at line 148 of file RequestContextTest.cpp.

References data_, EXPECT_EQ, and EXPECT_FALSE.

                                           {
  // Don't create a top level guard
  setData(10);
  {
    RequestContextScopeGuard g1;
    EXPECT_FALSE(hasData());
  }
  EXPECT_EQ(10, getData().data_);
  EXPECT_EQ(1, getData().set_);
  EXPECT_EQ(0, getData().unset_);
}

TEST_F	(	RequestContextTest	,
		setIfAbsentTest
	)

Definition at line 160 of file RequestContextTest.cpp.

References data_, EXPECT_EQ, EXPECT_FALSE, EXPECT_TRUE, folly::RequestContext::get(), folly::RequestContext::setContext(), folly::RequestContext::setContextData(), and testtoken.

                                            {
  EXPECT_TRUE(RequestContext::get() != nullptr);

  RequestContext::get()->setContextData("test", std::make_unique<TestData>(10));
  EXPECT_FALSE(RequestContext::get()->setContextDataIfAbsent(
      "test", std::make_unique<TestData>(20)));
  EXPECT_EQ(
      10,
      dynamic_cast<TestData*>(RequestContext::get()->getContextData(testtoken))
          ->data_);

  EXPECT_TRUE(RequestContext::get()->setContextDataIfAbsent(
      "test2", std::make_unique<TestData>(20)));
  EXPECT_EQ(
      20,
      dynamic_cast<TestData*>(RequestContext::get()->getContextData("test2"))
          ->data_);

  RequestContext::setContext(std::shared_ptr<RequestContext>());
  EXPECT_TRUE(nullptr != RequestContext::get());
}

TEST_F	(	RequestContextTest	,
		testSetUnset
	)

Definition at line 182 of file RequestContextTest.cpp.

References folly::RequestContext::create(), EXPECT_EQ, folly::RequestContext::saveContext(), folly::RequestContext::setContext(), and testtoken.

                                         {
  RequestContext::create();
  auto ctx1 = RequestContext::saveContext();
  ctx1->setContextData("test", std::make_unique<TestData>(10));
  auto testData1 = dynamic_cast<TestData*>(ctx1->getContextData("test"));

  // onSet called in setContextData
  EXPECT_EQ(1, testData1->set_);

  // Override RequestContext
  RequestContext::create();
  auto ctx2 = RequestContext::saveContext();
  ctx2->setContextData(testtoken, std::make_unique<TestData>(20));
  auto testData2 = dynamic_cast<TestData*>(ctx2->getContextData(testtoken));

  // onSet called in setContextData
  EXPECT_EQ(1, testData2->set_);

  // Check ctx1->onUnset was called
  EXPECT_EQ(1, testData1->unset_);

  RequestContext::setContext(ctx1);
  EXPECT_EQ(2, testData1->set_);
  EXPECT_EQ(1, testData1->unset_);
  EXPECT_EQ(1, testData2->unset_);

  RequestContext::setContext(ctx2);
  EXPECT_EQ(2, testData1->set_);
  EXPECT_EQ(2, testData1->unset_);
  EXPECT_EQ(2, testData2->set_);
  EXPECT_EQ(1, testData2->unset_);
}

TEST_F	(	RequestContextTest	,
		deadlockTest
	)

Definition at line 215 of file RequestContextTest.cpp.

References folly::RequestContext::clearContextData(), folly::RequestContext::get(), folly::RequestContext::setContextData(), string, testtoken, and val.

                                         {
  class DeadlockTestData : public RequestData {
   public:
    explicit DeadlockTestData(const std::string& val) : val_(val) {}

    ~DeadlockTestData() override {
      RequestContext::get()->setContextData(
          val_, std::make_unique<TestData>(1));
    }

    bool hasCallback() override {
      return false;
    }

    std::string val_;
  };

  RequestContext::get()->setContextData(
      "test", std::make_unique<DeadlockTestData>("test2"));
  RequestContext::get()->clearContextData(testtoken);
}

TEST_F	(	RequestContextTest	,
		sharedGlobalTest
	)

Definition at line 239 of file RequestContextTest.cpp.

References ASSERT_FALSE, ASSERT_TRUE, folly::RequestContext::get(), and folly::RequestContext::setContextData().

                                             {
  static bool global = false;

  class GlobalTestData : public RequestData {
   public:
    void onSet() override {
      ASSERT_FALSE(global);
      global = true;
    }

    void onUnset() override {
      ASSERT_TRUE(global);
      global = false;
    }

    bool hasCallback() override {
      return true;
    }
  };

  RequestContextScopeGuard g0;
  RequestContext::get()->setContextData(
      "test", std::make_unique<GlobalTestData>());
  {
    RequestContextScopeGuard g1;
    RequestContext::get()->setContextData(
        "test", std::make_unique<GlobalTestData>());
  }
}

TEST_F	(	RequestContextTest	,
		ShallowCopyBasic
	)

Definition at line 269 of file RequestContextTest.cpp.

References data_, EXPECT_EQ, and EXPECT_FALSE.

                                             {
  ShallowCopyRequestContextScopeGuard g0;
  setData(123, "immutable");
  EXPECT_EQ(123, getData("immutable").data_);
  EXPECT_FALSE(hasData());

  {
    ShallowCopyRequestContextScopeGuard g1;
    EXPECT_EQ(123, getData("immutable").data_);
    setData(789);
    EXPECT_EQ(789, getData().data_);
  }

  EXPECT_FALSE(hasData());
  EXPECT_EQ(123, getData("immutable").data_);
  EXPECT_EQ(1, getData("immutable").set_);
  EXPECT_EQ(0, getData("immutable").unset_);
}

TEST_F	(	RequestContextTest	,
		ShallowCopyOverwrite
	)

Definition at line 288 of file RequestContextTest.cpp.

References data_, and EXPECT_EQ.

                                                 {
  RequestContextScopeGuard g0;
  setData(123);
  EXPECT_EQ(123, getData().data_);
  {
    ShallowCopyRequestContextScopeGuard g1(
        "test", std::make_unique<TestData>(789));
    EXPECT_EQ(789, getData().data_);
    EXPECT_EQ(1, getData().set_);
    EXPECT_EQ(0, getData().unset_);
  }
  EXPECT_EQ(123, getData().data_);
  EXPECT_EQ(2, getData().set_);
  EXPECT_EQ(1, getData().unset_);
}

TEST_F	(	RequestContextTest	,
		ShallowCopyDefaultContext
	)

Definition at line 304 of file RequestContextTest.cpp.

References data_, and EXPECT_EQ.

                                                      {
  // Don't set global scope guard
  setData(123);
  EXPECT_EQ(123, getData().data_);
  {
    ShallowCopyRequestContextScopeGuard g1(
        "test", std::make_unique<TestData>(789));
    EXPECT_EQ(789, getData().data_);
  }
  EXPECT_EQ(123, getData().data_);
  EXPECT_EQ(1, getData().set_);
  EXPECT_EQ(0, getData().unset_);
}

TEST_F	(	RequestContextTest	,
		ShallowCopyClear
	)

Definition at line 318 of file RequestContextTest.cpp.

References data_, and EXPECT_EQ.

                                             {
  RequestContextScopeGuard g0;
  setData(123);
  EXPECT_EQ(123, getData().data_);
  {
    ShallowCopyRequestContextScopeGuard g1;
    EXPECT_EQ(123, getData().data_);
    clearData();
    setData(789);
    EXPECT_EQ(789, getData().data_);
  }
  EXPECT_EQ(123, getData().data_);
  EXPECT_EQ(2, getData().set_);
  EXPECT_EQ(1, getData().unset_);
}

Variable Documentation

RequestToken testtoken("test")

Referenced by TEST_F().