无法在 kotlin 中使用 mock 或没有测试这个 dataClass

Question

除了cardNumber和termsAndCondition之外都成功了。这两个返回null。测试期间如何返回真值？ （我没有删除一些 cmets 来显示我已经尝试过的代码。）

NewCardValidation.kt

data class NewCreditCardValidation(
    var cardNumber: MasterPassEditText? = null,
    var termsAndCondition: CompoundButton? = null,
    var cardMonth: Int? = null,
    var cardYear: Int? = null,
    var cardName: String? = null
) {
    val isValid: Boolean
        get() = when {
            cardNumber?.isEmpty == true -> false
            termsAndCondition?.isChecked == false -> false
            cardMonth == null -> false
            cardYear == null -> false
            cardName.isNullOrBlank() -> false
            else -> true
        }
}

NewCardValidationTest.kt

@RunWith(MockitoJUnitRunner::class)
class NewCreditCardValidationTest{
    private val newCardValidation = NewCreditCardValidation()
    @Test
    fun `Check cardValidation is valid`(){
        newCardValidation.cardNumber?.setText("4111111111111111")
      //  Mockito.`when`(newCardValidation.termsAndCondition?.isChecked).thenReturn(true)
        newCardValidation.termsAndCondition?.isChecked = true
       // doReturn(true).`when`(newCardValidation.termsAndCondition?.isChecked)
        newCardValidation.cardMonth = 10
        newCardValidation.cardYear = 2023
        newCardValidation.cardName = "mycard"
        Truth.assertThat(newCardValidation.isValid).isTrue()
    }
}

Answer 1

因为isValid 是val，所以在类实例化时创建。为函数更改它，每次都会计算它，包括对变量的更改。