verifyNoMoreInteractions(cifsContext, configuration);
    }

    @Test
    @DisplayName("getPreNTLMResponse: unsupported OEM encoding propagates as runtime exception")
    void testGetPreNTLMResponse_invalidEncoding() {
        // Arrange
        when(cifsContext.getConfig()).thenReturn(configuration);
        when(configuration.getOemEncoding()).thenReturn("X-INVALID-ENCODING-NOT-EXISTENT");

        // Act + Assert