public  void testConstructorNull() 
{
        MessageNotReadableException ex = new MessageNotReadableException(null);
        assertNull(ex.getMessage());
        assertNull(ex.getErrorCode());
        assertNull(ex.getLinkedException());
}

 public  void testConstructorNullNull() 
{
        MessageNotReadableException ex = new MessageNotReadableException(null, null);
        assertNull(ex.getMessage());
        assertNull(ex.getErrorCode());
        assertNull(ex.getLinkedException());
}

 public  void testConstructorNullString() 
{
        String expected = "some code";
        MessageNotReadableException ex = new MessageNotReadableException(null, expected);
        assertNull(ex.getMessage());
        assertEquals(expected, ex.getErrorCode());
        assertNull(ex.getLinkedException());
}

 public  void testConstructorString() 
{
        String expected = "some message";
        MessageNotReadableException ex = new MessageNotReadableException(expected);
        assertEquals(expected, ex.getMessage());
        assertNull(ex.getErrorCode());
        assertNull(ex.getLinkedException());
}

 public  void testConstructorStringNull() 
{
        String expected = "some message";
        MessageNotReadableException ex = new MessageNotReadableException(expected, null);
        assertEquals(expected, ex.getMessage());
        assertNull(ex.getErrorCode());
        assertNull(ex.getLinkedException());
}

 public  void testConstructorStringString() 
{
        String expectedMessage = "some message";
        String expectedCode = "some code";
        MessageNotReadableException ex = new MessageNotReadableException(expectedMessage, expectedCode);
        assertEquals(expectedMessage, ex.getMessage());
        assertEquals(expectedCode, ex.getErrorCode());
        assertNull(ex.getLinkedException());
}