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.ViewUtils
21 import android.widget.FrameLayout
22 import androidx.compose.ui.platform.ComposeView
23 import androidx.test.ext.junit.runners.AndroidJUnit4
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(AndroidJUnit4::class)
32 class ComposeInitializerTest : SysuiTestCase() {
33     @Test
testCanAddComposeViewInInitializedWindownull34     fun testCanAddComposeViewInInitializedWindow() {
35         val root = TestWindowRoot(context)
36         try {
37             runOnMainThreadAndWaitForIdleSync { ViewUtils.attachView(root) }
38             assertThat(root.isAttachedToWindow).isTrue()
39 
40             runOnMainThreadAndWaitForIdleSync { root.addView(ComposeView(context)) }
41         } finally {
42             runOnMainThreadAndWaitForIdleSync { ViewUtils.detachView(root) }
43         }
44     }
45 
runOnMainThreadAndWaitForIdleSyncnull46     private fun runOnMainThreadAndWaitForIdleSync(f: () -> Unit) {
47         mContext.mainExecutor.execute(f)
48         waitForIdleSync()
49     }
50 
51     class TestWindowRoot(context: Context) : FrameLayout(context) {
onAttachedToWindownull52         override fun onAttachedToWindow() {
53             super.onAttachedToWindow()
54             ComposeInitializer.onAttachedToWindow(this)
55         }
56 
onDetachedFromWindownull57         override fun onDetachedFromWindow() {
58             super.onDetachedFromWindow()
59             ComposeInitializer.onDetachedFromWindow(this)
60         }
61     }
62 }
63