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.runtime
18 
19 import android.view.View
20 import androidx.test.ext.junit.runners.AndroidJUnit4
21 import androidx.test.filters.MediumTest
22 import junit.framework.TestCase
23 import org.junit.Rule
24 import org.junit.Test
25 import org.junit.runner.RunWith
26 
27 @MediumTest
28 @RunWith(AndroidJUnit4::class)
29 class DisposeTests : BaseComposeTest() {
30     @get:Rule override val activityRule = makeTestActivityRule()
31 
32     private val NeverEqualObject =
33         object {
equalsnull34             override fun equals(other: Any?): Boolean {
35                 return false
36             }
37         }
38 
39     @Test
testDisposeCompositionnull40     fun testDisposeComposition() {
41         val log = mutableListOf<String>()
42 
43         lateinit var recomposeScope: RecomposeScope
44         val composable =
45             @Composable {
46                 recomposeScope = currentRecomposeScope
47                 DisposableEffect(NeverEqualObject) {
48                     log.add("onCommit")
49                     onDispose { log.add("onCommitDispose") }
50                 }
51                 DisposableEffect(Unit) {
52                     log.add("onActive")
53                     onDispose { log.add("onActiveDispose") }
54                 }
55             }
56 
57         fun assertLog(expected: String, block: () -> Unit) {
58             log.clear()
59             block()
60             TestCase.assertEquals(expected, log.joinToString())
61         }
62 
63         assertLog("onCommit, onActive") {
64             activity.show(composable)
65             activity.waitForAFrame()
66         }
67 
68         assertLog("onCommitDispose, onCommit") {
69             recomposeScope.invalidate()
70             activity.waitForAFrame()
71         }
72 
73         assertLog("onActiveDispose, onCommitDispose") {
74             activity.uiThread { activity.setContentView(View(activity)) }
75             activity.waitForAFrame()
76         }
77 
78         assertLog("onCommit, onActive") {
79             activity.show(composable)
80             activity.waitForAFrame()
81         }
82     }
83 }
84