即使具有相同的数据，断言也无法比较两个数据类

问题描述

我有两个数据类 - hindiTranslation 和 EnglishTranslation。我正在使用第三个数据类 - hindiAndEnglishTranslation，将它们映射到房间数据库中的一对多关系中。我试图通过断言 hindiAndEnglishTranslation 的给定和检索对象是否相等来测试房间 Dao，但即使两个对象中的数据相同，测试也会失败。

印地语翻译：

@Entity(tableName = "hindi_translations")
data class hindiTranslation(
    @PrimaryKey
    var word: String,val hindiTranslation: String,val id: Long = randomNumberGenerator()
)

英文翻译：

@Entity(tableName = "english_translations")
data class EnglishTranslation(
    val translations: List<String>,val examples: List<String>,val usage: String,var parentKey: String,@PrimaryKey
    var englishId: Long = randomNumberGenerator(),)

印地语和英语翻译：

data class hindiAndEnglishTranslation(
    @Embedded val hindi: hindiTranslation,@Relation(
        parentColumn = "word",entityColumn = "parentKey"
    )
    val englishTranslations: List<EnglishTranslation>
)

Dao 测试中的代码：

    @Test
    fun getAllTranslations() = runBlockingTest {
        //  Given - inserting a few hindi and corresponding english translations
        database.getTranslationDao().inserthindiTranslation(hindi1)
        database.getTranslationDao().insertEnglishTranslation(english1)
        database.getTranslationDao().inserthindiTranslation(hindi2)
        database.getTranslationDao().insertEnglishTranslation(english22)
        database.getTranslationDao().insertEnglishTranslation(english32)
        database.getTranslationDao().insertEnglishTranslation(english42)

        //  When - all translations in database are fetched
        val translations = database.getTranslationDao().getAllTranslations()

        //  Then - the loaded translations contain the expected values
        assertthat(translations,equalTo((listof(hindiAndEnglish1,hindiAndEnglish2))))

    }

我得到的错误：

@R_404[email protected]: 
Expected: <hindiAndEnglishTranslation(hindi=hindiTranslation(word=hot,hindiTranslation=गरम,id=6050220789869782304),englishTranslations=[EnglishTranslation(translations=[having a high degree of heat or a high temperature,(of food) containing or consisting of pungent spices or peppers which produce a burning sensation when tasted,passionately enthusiastic,eager,or excited],examples=[it was hot inside the hall,a very hot dish cooked with green chili,the idea had been nurtured in his hot imagination],usage=Adjective,parentKey=hot,englishId=133595475665305056)])>
     but: was <hindiAndEnglishTranslation(hindi=hindiTranslation(word=hot,englishId=133595475665305056)])>

我做错了什么？

解决方法

您可能想要覆盖 hashcode 和 equals 方法。由于默认的 equals 方法是按引用而不是按数据进行比较。

,

您应该使用 npm install --legacy-peer-deps 而不是 assertContentEquals(expectedArray,actualArray)