### Question:
EncryptedPIN implements Serializable, Loggeable { public String getAccountNumber () { return accountNumber; } EncryptedPIN();  EncryptedPIN(byte[] pinBlock, byte pinBlockFormat, String accountNumber);  EncryptedPIN(byte[] pinBlock, byte pinBlockFormat, String accountNumber, boolean extract);  EncryptedPIN(String pinBlockHexString, byte pinBlockFormat, String accountNumber);  EncryptedPIN(String pinBlockHexString, byte pinBlockFormat, String accountNumber, boolean extract); void dump(PrintStream p, String indent); void setPINBlock(byte[] pinBlock); byte[] getPINBlock(); void setPINBlockFormat(byte pinBlockFormat); byte getPINBlockFormat(); void setAccountNumber(String extractedAccountNumber); String getAccountNumber(); static String extractAccountNumberPart(String accountNumber);  }### Answer:
@Test public void testConstructor() throws Throwable { EncryptedPIN encryptedPIN = new EncryptedPIN(); assertNull(encryptedPIN.getAccountNumber(), "encryptedPIN.getAccountNumber()"); }
@Test public void testGetAccountNumber() throws Throwable { byte[] pinBlock = new byte[0]; String result = new EncryptedPIN(pinBlock, (byte) 0, "testEncryptedPINAccountNumber").getAccountNumber(); assertEquals("AccountNumbe", result, "result"); }
@Test public void testGetAccountNumber1() throws Throwable { String result = new EncryptedPIN().getAccountNumber(); assertNull(result, "result"); }