1 /*
2  * Copyright 2020 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 androidx.compose.testutils
18 
19 import androidx.activity.ComponentActivity
20 import androidx.compose.ui.test.junit4.AndroidComposeTestRule
21 import androidx.test.ext.junit.rules.ActivityScenarioRule
22 
23 /**
24  * Takes the given test case and prepares it for execution-controlled test via
25  * [ComposeTestCaseSetup].
26  */
forGivenTestCasenull27 fun <A : ComponentActivity> AndroidComposeTestRule<ActivityScenarioRule<A>, A>.forGivenTestCase(
28     testCase: ComposeTestCase
29 ): ComposeTestCaseSetup {
30     fun getActivity(): A {
31         var activity: A? = null
32         activityRule.scenario.onActivity { activity = it }
33         if (activity == null) {
34             throw IllegalStateException("Activity was not set in the ActivityScenarioRule!")
35         }
36         return activity!!
37     }
38 
39     return AndroidComposeTestCaseSetup(testCase, getActivity())
40 }
41