Function failOnSendError

pkg/iostreams/iostreams_progress_indicator_test.go:232–246

failOnSendError adds an observer that will fail the test in a standardised way if any sending of input fails, without requiring an explicit assertion. Use WithRelaxedIO to disable this behaviour.

(t *testing.T)

//
// Use WithRelaxedIO to disable this behaviour.
func failOnSendError(t *testing.T) expect.ConsoleOpt {
	t.Helper()
	return expect.WithSendObserver(
		func(msg string, n int, err error) {
			t.Helper()

			if err != nil {
				t.Fatalf("Failed to send %q: %s\n", msg, err)
			}
			if len(msg) != n {
				t.Fatalf("Only sent %d of %d bytes for %q\n", n, len(msg), msg)
			}
		},
	)
}

// testCloser is a helper to fail the test if a Closer fails to close.
func testCloser(t *testing.T, closer io.Closer) {