android - 即使未调用该方法，Mockito never() 也会被调用吗？

Question

这是我的 repo

interface TrendingRepository{

fun getTrendingRepos()

测试类

@RunWith(JUnit4::class)
class TrendingViewModelTest {

    private val trendingRepository = mock(TrendingRepository::class.java)
    private var trendingViewModel = TrendingViewModel(trendingRepository)

    @Test
    fun testWithNoNetwork() {
        trendingViewModel.isConnected = false
        verify(trendingRepository, never()).getTrendingRepos()
    }

    @Test
    fun testWithNetwork() {
        trendingViewModel.isConnected = true
        verify(trendingRepository, never()).getTrendingRepos()
    }
}

趋势 View 模型

fun fetchTrendingRepos() {
    if (isConnected) {
        loadingProgress.value = true
        compositeDisposable.add(
            trendingRepository.getTrendingRepos().subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe({ response ->
                    run {
                        loadingProgress.value = false
                },
                    { error ->
                        loadingProgress.value = false
                    }
                )
        )
    } 

这两个测试都通过了，但是 TrendingViewModel 仅在有 Activity 网络时才调用 getTrendingRepos()，isConnected = true

Answer 1

您应该在验证之前调用您正在测试的函数:

@RunWith(JUnit4::class)
class TrendingViewModelTest {

    private val trendingRepository = mock(TrendingRepository::class.java)
    private var trendingViewModel = TrendingViewModel(trendingRepository)

    @Test
    fun testWithNoNetwork() {
        trendingViewModel.isConnected = false
        trendingViewModel.fetchTrendingRepos()
        verify(trendingRepository, never()).getTrendingRepos()
    }

    @Test
    fun testWithNetwork() {
        trendingViewModel.isConnected = true
        trendingViewModel.fetchTrendingRepos()
        verify(trendingRepository, times(1)).getTrendingRepos()
    }
}