1 /*
<lambda>null2  * 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.tools.flicker.assertors.assertions
18 
19 import android.tools.flicker.ScenarioInstance
20 import android.tools.flicker.assertions.FlickerTest
21 import android.tools.flicker.assertors.ComponentTemplate
22 
23 /**
24  * Checks that the app layer doesn't exist or is invisible at the start of the transition, but is
25  * created and/or becomes visible during the transition.
26  */
27 class HasAtMostOneWindowMatching(private val component: ComponentTemplate) :
28     AssertionTemplateWithComponent(component) {
29     /** {@inheritDoc} */
30     override fun doEvaluate(scenarioInstance: ScenarioInstance, flicker: FlickerTest) {
31         flicker.assertWm {
32             invoke("HasAtMostOneWindowMatching") {
33                 val matcher = component.build(scenarioInstance)
34                 val windowCount =
35                     it.wmState.windowStates.count { window -> matcher.windowMatchesAnyOf(window) }
36                 require(windowCount <= 1) { "Matched more than 1 $matcher" }
37             }
38         }
39     }
40 }
41