单元测试在Firebase Task API的addOnCompleteListener之后停止

时间:2018-03-06 10:25:25

标签: firebase firebase-realtime-database google-tasks-api android-junit

我为我的App实现了我的第一个测试用例。在每个测试用例之前,我需要使用Firebase登录。

我使用Tasks API编写了Firebase类中的所有内容。 Firebase类是异步的但发回一个Task,结果可以使用addOnCompleteListener读取。但是,登录后,logUserIn(),测试停止,“someNumber”无法打印。我不能将logUserIn()方法放在@Before方法中,因为它是异步的。

@RunWith(AndroidJUnit4::class)
class NetworthServiceTest {

    @Rule
    @JvmField
    val rule = ActivityTestRule(MainActivity::class.java)

    private fun logUserIn(): Task<Boolean> {
        val tcs = TaskCompletionSource<Boolean>()

        val task = FirebaseService().initialize(
                TEST_USER_EMAIL,
                TEST_USER_PASSWORD,
                rule.activity)

        task.addOnCompleteListener {
            Assert.assertEquals("User " + TEST_USER_EMAIL + " cannot be logged in", "", it.result.second)

            val loginManager = UtilsProvider().getBookyLoginManager()
            Assert.assertEquals("User should be logged in", true, loginManager.isLoggedIn())

            tcs.setResult(true)
        }

        return tcs.task
    }

    @Test
    @Throws(Exception::class)
    fun whenReadingTableShouldGive10Results() {
        val task = logUserIn()
        task.addOnCompleteListener {
            val someNumber = 10
            Log.d("","print nr = "+ someNumber)
        }
    }
}


class FirebaseService {

    fun initialize(email: String, password: String, activity: Activity): Task<Pair<Any, String>> {
        database = FirebaseDatabase.getInstance().reference
        auth = FirebaseAuth.getInstance()

        val tcs = TaskCompletionSource<Pair<Any, String>>()

        auth!!.signInWithEmailAndPassword(email, password)
                .addOnCompleteListener(activity) { task ->
                    if (task.isSuccessful) {
                        user = auth!!.currentUser
                        isInitialized = true
                        val pair = Pair<Any, String>(null, "")
                        tcs.setResult(pair)
                    } else {
                        val pair = Pair<Any, String>(null, "error: " + task.exception!!.message)
                        tcs.setResult(pair)
                    }
                }
        return tcs.task
    }
}

1 个答案:

答案 0 :(得分:1)

您可以use Tasks.await() to block the current thread等待任务完成。对于应用程序代码,我们不建议这样做(请参阅this blog中的更多内容),但测试应该没问题。