### Question:
DN implements Comparable<DN>, Serializable { public RDN getRDN(int pos) { return rdnComponents[pos]; } DN();  DN(RDN[] rdnComponents);  DN(List<RDN> rdnComponents);  DN(RDN rdn, DN parentDN); static DN rootDN(); boolean isRootDN(); int size(); RDN rdn(); DN rename(final DN fromDN, final DN toDN); RDN getRDN(int pos); DN parent(); DN getParentDNInSuffix(); DN child(RDN rdn); DN concat(RDN[] rdnComponents); DN child(DN relativeBaseDN); boolean isDescendantOf(DN dn); boolean isAncestorOf(DN dn); boolean matchesBaseAndScope(DN baseDN, SearchScope scope); static DN decode(ByteSequence dnString); static DN valueOf(String dnString); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString(); void toString(StringBuilder buffer); String toNormalizedUrlSafeString(); ByteString toNormalizedByteString(); @Override int compareTo(DN other); static final DN NULL_DN; static final byte NORMALIZED_RDN_SEPARATOR; static final byte NORMALIZED_AVA_SEPARATOR; static final byte NORMALIZED_ESC_BYTE; }### Answer:
@Test(dataProvider = "createParentAndRDNTestData") public void testGetRDN(String s, String p, String r) throws Exception { DN dn = DN.valueOf(s); RDN rdn = r != null ? RDN.decode(r) : null; assertEquals(dn.rdn(), rdn, "For DN " + s); }