### Question:
CertUtils { public static String getIssuerName(X509Certificate cert) { if (cert == null) { return null; } return cert.getIssuerX500Principal().getName(X500Principal.RFC2253, OID_MAP); }  static String getSubjectName(X509Certificate cert); static String getIssuerName(X509Certificate cert); static String getAttributeValue(X500Principal principal, String attributeName); static final String COMMON_NAME; static final String MAIL; static final String EMAIL_ADDRESS; static final String UID; }### Answer:
@Test public void issuerNameIsCorrectlyRetrieved() { assertThat(CertUtils.getIssuerName(cert)).isEqualTo(ISSUER_NAME); }