在Google测试框架中从另一个测试执行测试

Question

Let's say I have two tests in the same testcase: writeTest and readTest

TEST_F(testcase, writeTest)
{
  ASSERT_EQ(OK, write_something();
} 

TEST_F(testcase, readTest)
{
  ASSERT_EQ(OK, write_something();
  ASSERT_EQ(OK, read_something();
}

My question is, can I execute writeTest from readTest?

To read something there must be something written. So I want to execute the writeTest (while being in test code of readTest) rather than repeating the codes of writeTest?

This is specially important when there is huge line of code in the writeTest.

Answer 1

Is there a need for your first test case at all. If you write something, how will you know it has worked without reading it afterwards?

First thing you have to ask yourself is, "What is the purpose of my test?"

For example.

Purpose: Write something which should return an error. Now it more important check the return error instead of verifying.

Purpose: Write a positive test case Now its important to test that what you have written can also be read.