1/* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package androidx.room.integration.kotlintestapp.test 18 19import androidx.lifecycle.LiveData 20import androidx.lifecycle.Observer 21 22object LiveDataTestUtil { 23 24 @Throws(InterruptedException::class) 25 fun <T> getValue(liveData: LiveData<T>): T { 26 val data = arrayOfNulls<Any>(1) 27 val observer = object : Observer<T> { 28 override fun onChanged(o: T?) { 29 data[0] = o 30 liveData.removeObserver(this) 31 } 32 } 33 liveData.observeForever(observer) 34 35 return data[0] as T 36 } 37} 38