assertEquals(2, pair.length, "row " + i + " must be [dos, ntstatus]");
        }
    }

    @Test
    @DisplayName("Messages: array is present and contains expected first entries")
    void dosErrorMessagesContainsExpectedTexts() {
        // Arrange & Act
        String[] msgs = DosError.DOS_ERROR_MESSAGES;

        // Assert
        assertNotNull(msgs);