| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| @file:OptIn(ExperimentalComposeApi::class) |
| package androidx.compose.test |
| |
| import androidx.compose.Composable |
| import androidx.compose.ExperimentalComposeApi |
| import androidx.compose.currentComposer |
| import androidx.compose.invalidate |
| import androidx.compose.key |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.MediumTest |
| import org.junit.Rule |
| import org.junit.runner.RunWith |
| import org.junit.Test |
| import kotlin.test.assertEquals |
| import kotlin.test.assertNotEquals |
| |
| @MediumTest |
| @RunWith(AndroidJUnit4::class) |
| class CompoundHashKeyTests : BaseComposeTest() { |
| @get:Rule |
| override val activityRule = makeTestActivityRule() |
| |
| @Test // b/157905524 |
| fun testWithSubCompose() { |
| val outerKeys = mutableListOf<Int>() |
| val innerKeys = mutableListOf<Int>() |
| val invalidates = mutableListOf<() -> Unit>() |
| fun invalidateComposition() { |
| invalidates.forEach { it() } |
| invalidates.clear() |
| } |
| @Composable |
| fun recordHashKeys() { |
| invalidates.add(invalidate) |
| outerKeys.add(currentComposer.currentCompoundKeyHash) |
| subCompose { |
| invalidates.add(invalidate) |
| innerKeys.add(currentComposer.currentCompoundKeyHash) |
| } |
| } |
| |
| val firstOuter = mutableListOf<Int>() |
| val firstInner = mutableListOf<Int>() |
| compose { |
| (0..1).forEach { |
| key(it) { |
| recordHashKeys() |
| } |
| } |
| }.then { |
| assertEquals(2, outerKeys.size) |
| assertEquals(2, innerKeys.size) |
| assertNotEquals(outerKeys[0], outerKeys[1]) |
| assertNotEquals(innerKeys[0], innerKeys[1]) |
| |
| firstOuter.addAll(outerKeys) |
| outerKeys.clear() |
| firstInner.addAll(innerKeys) |
| innerKeys.clear() |
| invalidateComposition() |
| }.then { |
| assertEquals(firstInner, innerKeys) |
| assertEquals(firstOuter, outerKeys) |
| } |
| } |
| } |