// When & Then
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, null));
    }

    @Test
    @DisplayName("Constructor should handle empty filename")
    void testConstructorWithEmptyFilename() {
        // When & Then
        assertDoesNotThrow(() -> new Trans2GetDfsReferral(mockConfig, ""));
    }

    @Test
    @DisplayName("isForceUnicode should always return true")