cmdtest

func LeakCheck ¶

func LeakCheck(c *check.C) func()

LeakCheck tests for output being leaked to os.Stdout and os.Stderr that should be sent elsewhere (e.g., the stdout and stderr streams passed to a cmd.RunFunc).

It redirects os.Stdout and os.Stderr to a tempfile, and returns a func, which the caller is expected to defer, that restores os.* and checks that the tempfile is empty.

Example:

func (s *Suite) TestSomething(c *check.C) {
	defer cmdtest.LeakCheck(c)()
	// ... do things that shouldn't print to os.Stderr or os.Stdout
}