Google C++单元测试框架GoogleTest---TestFixtur…

TEST_F(test_case_name, test_name) {
 ... test body ...
}?

template <typename E> // E is the element type.
class Queue {
 public:
  Queue();
  void Enqueue(const E& element);
  E* Dequeue(); // Returns NULL if the queue is empty.
  size_t size() const;
  ...
}; 

class QueueTest : public ::testing::Test {
 protected:
  virtual void SetUp() {
    q1_.Enqueue(1);
    q2_.Enqueue(2);
    q2_.Enqueue(3);
  }

  // virtual void TearDown() {}

  Queue<int> q0_;
  Queue<int> q1_;
  Queue<int> q2_;
}; 

TEST_F(QueueTest, IsEmptyInitially) {
  EXPECT_EQ(0, q0_.size());
}

TEST_F(QueueTest, DequeueWorks) {
  int* n = q0_.Dequeue();
  EXPECT_EQ(NULL, n);

  n = q1_.Dequeue();
  ASSERT_TRUE(n != NULL);
  EXPECT_EQ(1, *n);
  EXPECT_EQ(0, q1_.size());
  delete n;

  n = q2_.Dequeue();
  ASSERT_TRUE(n != NULL);
  EXPECT_EQ(2, *n);
  EXPECT_EQ(1, q2_.size());
  delete n;
} 

class QuickTest : public testing::Test {
protected:
	// Remember that SetUp() is run immediately before a test starts.
	// This is a good place to record the start time.
	//这个方法在每一个test之前执行
	virtual void SetUp() {
		start_time_ = time(NULL);
	}
	// TearDown() is invoked immediately after a test finishes.  Here we
	// check if the test was too slow.
	//这个方法在每一个test之后执行
	virtual void TearDown() {
		// Gets the time when the test finishes
		const time_t end_time = time(NULL);
		// Asserts that the test took no more than ~5 seconds.  Did you
		// know that you can use assertions in SetUp() and TearDown() as
		// well?
		EXPECT_TRUE(end_time - start_time_ <= 5) << "The test took too long.";
	}

	// The UTC time (in seconds) when the test starts
	time_t start_time_;
};

class IntegerFunctionTest : public QuickTest {
	// We don't need any more logic than already in the QuickTest fixture.
	// Therefore the body is empty.
};

TEST_F(IntegerFunctionTest, Factorial) {
	// Tests factorial of negative numbers.
	EXPECT_EQ(1, Factorial(-5));
	EXPECT_EQ(1, Factorial(-1));
	EXPECT_GT(Factorial(-10), 0);

	// Tests factorial of 0.
	EXPECT_EQ(1, Factorial(0));

	// Tests factorial of positive numbers.
	EXPECT_EQ(1, Factorial(1));
	EXPECT_EQ(2, Factorial(2));
	EXPECT_EQ(6, Factorial(3));
	EXPECT_EQ(40320, Factorial(8));
}

class QueueTest : public QuickTest {
protected:
	virtual void SetUp() {
		// First, we need to set up the super fixture (QuickTest).
		QuickTest::SetUp();

		// Second, some additional setup for this fixture.
		q1_.Enqueue(1);
		q2_.Enqueue(2);
		q2_.Enqueue(3);
	}

	// By default, TearDown() inherits the behavior of
	// QuickTest::TearDown().  As we have no additional cleaning work
	// for QueueTest, we omit it here.
	//
	// virtual void TearDown() {
	//   QuickTest::TearDown();
	// }

	Queue<int> q0_;
	Queue<int> q1_;
	Queue<int> q2_;
};

// Tests the default constructor.
TEST_F(QueueTest, DefaultConstructor) {
	EXPECT_EQ(0u, q0_.Size());
}