* 2. Value based tests for instance methods
     * --------------------------------------------------------------------- */
    @ParameterizedTest
    @MethodSource("hostnamesProvider")
    void firstCalledNameForInetAddressConformsToUpperCase(String hostname, String hostWithoutDot, String expectedPrefix) {
        // Arrange
        InetAddress addr = mock(InetAddress.class);
        when(addr.getHostName()).thenReturn(hostname);