Function theStandardErrorShouldContain

acceptance/cli/cli.go:538–569

theStandardErrorShouldContain looks at the standard error (stderr) of the last invoked ec command and compares the expected error with the resulted error.

(ctx context.Context, expected *godog.DocString)

// theStandardErrorShouldContain looks at the standard error (stderr) of the last invoked ec
// command and compares the expected error with the resulted error.
func theStandardErrorShouldContain(ctx context.Context, expected *godog.DocString) error {
	status, err := ecStatusFrom(ctx)
	if err != nil {
		return err
	}

	if expected == nil {
		return errors.New("must provide expected error")
	}

	expectedStdErr := os.Expand(expected.Content, func(key string) string {
		return status.vars[key]
	})

	stderr := status.stderr.String()

	// shortcut, if the output is exactly as expected
	if stderr == expectedStdErr {
		return nil
	}

	if matched, err := regexp.MatchString(expectedStdErr, stderr); matched && err == nil {
		return nil
	}

	var b bytes.Buffer
	if diffErr := diff.Text("stderr", "expected", status.stderr, expectedStdErr, &b); diffErr != nil {
		return fmt.Errorf("expected error:\n%s\nnot found in standard error:\n%s", expectedStdErr, stderr)
	}

	return fmt.Errorf("expected and actual stderr differ:\n%s", b.String())
}

// theStandardOutputShouldMatchBaseline reads the expected text from a file instead of directly
// from the feature file