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 com.android.systemui.compose
18 
19 import android.content.Context
20 import android.testing.AndroidTestingRunner
21 import android.testing.ViewUtils
22 import android.widget.FrameLayout
23 import androidx.compose.ui.platform.ComposeView
24 import androidx.test.filters.SmallTest
25 import com.android.systemui.SysuiTestCase
26 import com.google.common.truth.Truth.assertThat
27 import org.junit.Test
28 import org.junit.runner.RunWith
29 
30 @SmallTest
31 @RunWith(AndroidTestingRunner::class)
32 class ComposeInitializerTest : SysuiTestCase() {
33     @Test
34     fun testCanAddComposeViewInInitializedWindow() {
35         if (!ComposeFacade.isComposeAvailable()) {
36             return
37         }
38 
39         val root = TestWindowRoot(context)
40         try {
41             runOnMainThreadAndWaitForIdleSync { ViewUtils.attachView(root) }
42             assertThat(root.isAttachedToWindow).isTrue()
43 
44             runOnMainThreadAndWaitForIdleSync { root.addView(ComposeView(context)) }
45         } finally {
46             runOnMainThreadAndWaitForIdleSync { ViewUtils.detachView(root) }
47         }
48     }
49 
50     private fun runOnMainThreadAndWaitForIdleSync(f: () -> Unit) {
51         mContext.mainExecutor.execute(f)
52         waitForIdleSync()
53     }
54 
55     class TestWindowRoot(context: Context) : FrameLayout(context) {
56         override fun onAttachedToWindow() {
57             super.onAttachedToWindow()
58             ComposeFacade.composeInitializer().onAttachedToWindow(this)
59         }
60 
61         override fun onDetachedFromWindow() {
62             super.onDetachedFromWindow()
63             ComposeFacade.composeInitializer().onDetachedFromWindow(this)
64         }
65     }
66 }
67