### Question:
VrfValidation { protected boolean ipVersionValidation(String ipVersion1, String ipVersion2) { return (ipVersion1.equalsIgnoreCase("4") && ipVersion2.equalsIgnoreCase("6")) || (ipVersion1.equalsIgnoreCase("6") && ipVersion2.equalsIgnoreCase("4")); }  void setBbInputSetupUtils(BBInputSetupUtils bbInputSetupUtils);  }### Answer:
@Test public void testIpVersionValidation() { String ipVersion1 = "4"; String ipVersion2 = "6"; boolean validation = vrfValidation.ipVersionValidation(ipVersion1, ipVersion2); assertEquals("Validation is correct", true, validation); validation = vrfValidation.ipVersionValidation(ipVersion2, ipVersion1); assertEquals("Validation is correct", true, validation); ipVersion1 = "6"; validation = vrfValidation.ipVersionValidation(ipVersion1, ipVersion2); assertEquals("Validation is correct", false, validation); }