| /* |
| * Copyright 2023 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. |
| */ |
| |
| package androidx.compose.foundation.text2 |
| |
| import androidx.compose.foundation.ExperimentalFoundationApi |
| import androidx.compose.foundation.text2.input.TextFieldState |
| import androidx.compose.foundation.text2.input.rememberTextFieldState |
| import androidx.compose.foundation.text2.input.selectAll |
| import androidx.compose.runtime.remember |
| import androidx.compose.ui.test.junit4.StateRestorationTester |
| import androidx.compose.ui.test.junit4.createComposeRule |
| import androidx.compose.ui.text.TextRange |
| import androidx.test.ext.junit.runners.AndroidJUnit4 |
| import androidx.test.filters.SmallTest |
| import com.google.common.truth.Truth.assertThat |
| import org.junit.Rule |
| import org.junit.Test |
| import org.junit.runner.RunWith |
| |
| @OptIn(ExperimentalFoundationApi::class) |
| @SmallTest |
| @RunWith(AndroidJUnit4::class) |
| class TextFieldStateRestorationTest { |
| |
| @get:Rule |
| val rule = createComposeRule() |
| |
| private val restorationTester = StateRestorationTester(rule) |
| |
| @Test |
| fun rememberTextFieldState_restoresTextAndSelection() { |
| lateinit var originalState: TextFieldState |
| lateinit var restoredState: TextFieldState |
| var rememberCount = 0 |
| restorationTester.setContent { |
| val state = rememberTextFieldState() |
| if (remember { rememberCount++ } == 0) { |
| originalState = state |
| } else { |
| restoredState = state |
| } |
| } |
| rule.runOnIdle { |
| originalState.edit { |
| append("hello, world") |
| selectAll() |
| } |
| } |
| |
| restorationTester.emulateSavedInstanceStateRestore() |
| |
| rule.runOnIdle { |
| assertThat(restoredState.text.toString()).isEqualTo("hello, world") |
| assertThat(restoredState.text.selectionInChars).isEqualTo(TextRange(0, 12)) |
| } |
| } |
| } |
