CountryDBtests.java

@SuppressWarnings("Not presented method findByTwoLetterCode(). Fix it in shortest possible time.")
    @Ignore
    @Test
    public void testFindByTwoLetterCode() {
      CountryData countryData = new CountryData();
      String twoLetterCode = "AZ";
      countryData.code2 = twoLetterCode;
      Long countryId = countryDB.create(countryData);
      Country country = countryDB.findByTwoLetterCode("AZ");
      Assert.assertEquals(countryId, country.id);
      Assert.assertEquals(twoLetterCode, country.twoLetterCode);
    }

// Try this pattern:
@Test
public void testFindByTwoLetterCode() {
      final String expectedTwoLetterCode = "AZ";
    
      final CountryData countryData = new CountryData();
      countryData.code2 = expectedTwoLetterCode;
      final Long createdCountryId = countryDB.create(countryData);
    
      final Country fetchedCountryByTwoLetterCode = countryDB.findByTwoLetterCode(expectedTwoLetterCode);
    
      Assert.assertEquals(createdCountryId, fetchedCountryByTwoLetterCode.id);
      Assert.assertEquals(expectedTwoLetterCode, fetchedCountryByTwoLetterCode.twoLetterCode);
    }