Function failOnExpectError

pkg/iostreams/iostreams_progress_indicator_test.go:205–226

failOnExpectError adds an observer that will fail the test in a standardised way if any expectation on the command output fails, without requiring an explicit assertion. Use WithRelaxedIO to disable this behaviour.

(t *testing.T)

//
// Use WithRelaxedIO to disable this behaviour.
func failOnExpectError(t *testing.T) expect.ConsoleOpt {
	t.Helper()
	return expect.WithExpectObserver(
		func(matchers []expect.Matcher, buf string, err error) {
			t.Helper()

			if err == nil {
				return
			}

			if len(matchers) == 0 {
				t.Fatalf("Error occurred while matching %q: %s\n", buf, err)
			}

			var criteria []string
			for _, matcher := range matchers {
				criteria = append(criteria, fmt.Sprintf("%q", matcher.Criteria()))
			}
			t.Fatalf("Failed to find [%s] in %q: %s\n", strings.Join(criteria, ", "), buf, err)
		},
	)
}

// failOnSendError adds an observer that will fail the test in a standardised way
// if any sending of input fails, without requiring an explicit assertion.