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/*
* Copyright 2026 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
*
* https://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 com.example.compose.snippets.test
import androidx.compose.material3.Text
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.test.ExperimentalTestApi
import androidx.compose.ui.test.assertIsDisplayed
import androidx.compose.ui.test.junit4.v2.createComposeRule
import androidx.compose.ui.test.onNodeWithText
import androidx.compose.ui.test.v2.runComposeUiTest
import kotlinx.coroutines.delay
import kotlinx.coroutines.test.advanceTimeBy
import kotlinx.coroutines.test.runTest
import org.junit.Rule
import org.junit.Test
class RunComposeUiTest {
@OptIn(ExperimentalTestApi::class)
// [START android_compose_test_runComposeUiTest]
@Test
fun testWithCoroutines() = runComposeUiTest {
setContent {
var status by remember { mutableStateOf("Loading...") }
LaunchedEffect(Unit) {
delay(1000)
status = "Done!"
}
Text(text = status)
}
onNodeWithText("Loading...").assertIsDisplayed()
mainClock.advanceTimeBy(1000 + 16 /* Frame buffer */)
onNodeWithText("Done!").assertIsDisplayed()
}
}
// [END android_compose_test_runComposeUiTest]
class Test2 {
// [START android_compose_test_v2_apis]
@get:Rule
val composeTestRule = createComposeRule()
@Test
fun testWithCoroutines() {
composeTestRule.setContent {
var status by remember { mutableStateOf("Loading...") }
LaunchedEffect(Unit) {
delay(1000)
status = "Done!"
}
Text(text = status)
}
// NOT RECOMMENDED
// Fails: runTest creates a new, separate scheduler.
// Advancing time here does NOT advance the compose clock.
// To fix this without migrating, you would need to share the scheduler
// by passing 'composeTestRule.mainClock.scheduler' to runTest.
runTest {
composeTestRule.onNodeWithText("Loading...").assertIsDisplayed()
advanceTimeBy(1000)
composeTestRule.onNodeWithText("Done!").assertIsDisplayed()
}
}
// [END android_compose_test_v2_apis]
}