Function TestCommandMocking

git/client_test.go:1978–2019

TestCommandMocking is an invoked test helper that emulates expected behavior for predefined shell commands, erroring when unexpected conditions are encountered.

(t *testing.T)

// TestCommandMocking is an invoked test helper that emulates expected behavior for predefined shell commands, erroring when unexpected conditions are encountered.
func TestCommandMocking(t *testing.T) {
	if os.Getenv("GH_WANT_HELPER_PROCESS_RICH") != "1" {
		return
	}

	jsonVar, ok := os.LookupEnv("GH_HELPER_PROCESS_RICH_COMMANDS")
	if !ok {
		fmt.Fprint(os.Stderr, "missing GH_HELPER_PROCESS_RICH_COMMANDS")
		// Exit 1 is used for empty key values in the git config. This is non-breaking in those use cases,
		// so this is returning a non-zero exit code to avoid suppressing this error for those use cases.
		os.Exit(16)
	}

	var commands mockedCommands
	if err := json.Unmarshal([]byte(jsonVar), &commands); err != nil {
		fmt.Fprint(os.Stderr, "failed to unmarshal GH_HELPER_PROCESS_RICH_COMMANDS")
		// Exit 1 is used for empty key values in the git config. This is non-breaking in those use cases,
		// so this is returning a non-zero exit code to avoid suppressing this error for those use cases.
		os.Exit(16)
	}

	// The discarded args are those for the go test binary itself, e.g. `-test.run=TestHelperProcessRich`
	realArgs := os.Args[3:]

	commandResult, ok := commands[args(strings.Join(realArgs, " "))]
	if !ok {
		fmt.Fprintf(os.Stderr, "unexpected command: %s\n", strings.Join(realArgs, " "))
		// Exit 1 is used for empty key values in the git config. This is non-breaking in those use cases,
		// so this is returning a non-zero exit code to avoid suppressing this error for those use cases.
		os.Exit(16)
	}

	if commandResult.Stdout != "" {
		fmt.Fprint(os.Stdout, commandResult.Stdout)
	}

	if commandResult.Stderr != "" {
		fmt.Fprint(os.Stderr, commandResult.Stderr)
	}

	os.Exit(commandResult.ExitStatus)
}

func TestHelperProcess(t *testing.T) {
	if os.Getenv("GH_WANT_HELPER_PROCESS") != "1" {