I am using Monkey Patching in Go. When I debug the following code in VSCode it shows that the function proc.Signal return the error programmed.
func TestCheckProcessRunning(t *testing.T) {
monkey.Patch((*os.Process).Signal, func(p *os.Process, sig os.Signal) error {
return errors.New("Signal failed")
})
proc := &os.Process{}
sig_e := proc.Signal(syscall.Signal(0))
fmt.Printf("%s\n", sig_e)
}
Signal failed
But when I tried to run the test using go test . , the patch is no longer applied and got a different error:
os: process not initialized
Any idea of what I am doing wrong?