Golang中的单元测试模式识别

Question

I am building unit testing of the application that uses os.Exit(1), once os.Exit(1) executes remaining test file are skipped with go test, I am thinking about suppressing os.Exit during the unit test execution only. I wonder how I can determine that app has been bootstrap from go test runner?

Answer 1

You will find various ways to unit test method with os.Exit() in "Testing os.Exit scenarios in Go with coverage information (coveralls.io/Goveralls)".

It uses a function which is:

• os.Exit() when you are not testing

  var osExit = os.Exit
  

• and "yourOsExit" when you are testing.

  func TestCrasher(t *testing.T) {
      // Save current function and restore at the end:
      oldOsExit := osExit
      defer func() { osExit = oldOsExit }()
      osExit = myExit