java - JUnit:创建JavaBean时测试int类型的ID是否为null

Question

我对测试有点陌生。我有一个带有 spring boot 和 oracle db 的小应用程序。我想在我的 JavaBean 类可以具有空 ID int 值时编写一个测试。这甚至可以测试吗？

目前我有这段代码，但我认为它工作不正确。

ReportModel reportModel = new ReportModel();

Validator validator = createValidator();
Set<ConstraintViolation<ReportModel>> constraintViolationSet = validator.validate(reportModel);

assertThat(constraintViolationSet.size()).isEqualTo(0);

编辑:完整测试类:

public class ValidatorTests {

    private Validator createValidator() {
        LocalValidatorFactoryBean localValidatorFactoryBean = new LocalValidatorFactoryBean();
        localValidatorFactoryBean.afterPropertiesSet();
        return localValidatorFactoryBean;
    }

    @Test
    public void shouldNotValidateWhenIdIsNull() {
        LocaleContextHolder.setLocale(Locale.ENGLISH);
        ReportModel reportModel = new ReportModel();

        Validator validator = createValidator();
        Set<ConstraintViolation<ReportModel>> constraintViolationSet = validator.validate(reportModel);

        assertThat(constraintViolationSet.size()).isEqualTo(0);
    }
}

Answer 1

试试这个:

assertEquals(constraintViolationSet.size(), 0);

或者，

assertTrue(constraintViolationSet.isEmpty());