proton-mail-android/app/src/androidTest/java/ch/protonmail/android/api/models/room/LiveDataUtil.kt

48 lines
1.5 KiB
Kotlin

/*
* Copyright (c) 2022 Proton AG
*
* This file is part of Proton Mail.
*
* Proton Mail is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Proton Mail is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Proton Mail. If not, see https://www.gnu.org/licenses/.
*/
package ch.protonmail.android.api.models.room
import androidx.lifecycle.LiveData
import androidx.lifecycle.Observer
import org.junit.Assert
import java.util.concurrent.CountDownLatch
import java.util.concurrent.TimeUnit
@Throws(InterruptedException::class)
inline fun <reified T> LiveData<T>.getTestValue(timeout:Long=2,timeUnit:TimeUnit=TimeUnit.SECONDS):T? {
val data = arrayOfNulls<T?>(1)
val latch = CountDownLatch(1)
val observer = object : Observer<T> {
override fun onChanged(value: T?) {
data[0] = value
latch.countDown()
removeObserver(this)
}
}
observeForever(observer)
if (!latch.await(timeout, timeUnit)) {
Assert.fail("Execution took more than $timeout $timeUnit")
}
return data[0]
}
val <reified T> LiveData<T>.testValue:T? inline get(){
return getTestValue()
}