1 /* 2 * Copyright (C) 2022 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 17 package android.companion.cts.common 18 19 import kotlin.time.Duration 20 import kotlin.time.Duration.Companion.milliseconds 21 import kotlin.time.Duration.Companion.seconds 22 23 interface InvocationTracker<T> { 24 val invocations: List<T> 25 26 /** 27 * Await invocations of this callback by the given [actions]. 28 */ assertInvokedByActionsnull29 fun assertInvokedByActions( 30 timeout: Duration = 1.seconds, 31 minOccurrences: Int = 1, 32 actions: () -> Unit 33 ) { 34 require(minOccurrences > 0) { 35 "Must expect at least one callback occurrence. (Given $minOccurrences)" 36 } 37 val expectedInvocationCount = invocations.size + minOccurrences 38 actions() 39 if (!waitFor(timeout, interval = 100.milliseconds) { 40 invocations.size >= expectedInvocationCount 41 }) { 42 throw AssertionError( 43 "Callback was invoked ${invocations.size} times after $timeout ms! " + 44 "Expected at least $minOccurrences times." 45 ) 46 } 47 } 48 clearRecordedInvocationsnull49 fun clearRecordedInvocations() 50 51 fun recordInvocation(invocation: T) 52 } 53 54 internal class InvocationContainer<T> : InvocationTracker<T> { 55 private val _invocations: MutableList<T> = mutableListOf() 56 override val invocations: List<T> 57 @Synchronized 58 get() = _invocations 59 60 @Synchronized 61 override fun clearRecordedInvocations() = _invocations.clear() 62 63 @Synchronized 64 override fun recordInvocation(invocation: T) { 65 _invocations.add(invocation) 66 } 67 } 68