使用 mockk 的测试用例不适用于功能

Question

I am new to mockk framework and trying to write a test case for below function

    fun fromCityWeather(cityWeather: List<CityWeather>): HomeWeather {
        return HomeWeather( 
            cityWeather.first().temperature,
            cityWeather.first().description
        )
    }

CityWeather and HomeWeather are my 2 classes and both have temperature and weather as fields. This function is written inside companion object of another class.

Please help me to understand the logic to start with as I have tried multiple times writing the test case while referring the blogs on internet and none worked.

Answer 1

You don't need mockk:

@Test
fun testFromCityWeather() {
    val weatherList = listOf(CityWeather("30", "degrees"), CityWeather("12", "degrees"))

    val expected = HomeWeather("30", "degrees")

    assertEquals(expected, fromCityWeather(weatherList))
}

(Assuming temperature and description are strings)