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NavHostControllerTest.kt
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NavHostControllerTest.kt
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/*
* Copyright 2021 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.google.accompanist.navigation.animation
import androidx.compose.animation.ExperimentalAnimationApi
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.remember
import androidx.compose.ui.test.junit4.createComposeRule
import androidx.navigation.NavHostController
import androidx.navigation.NoOpNavigator
import androidx.navigation.compose.currentBackStackEntryAsState
import androidx.navigation.get
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.LargeTest
import com.google.common.truth.Truth.assertThat
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
@OptIn(ExperimentalAnimationApi::class)
@LargeTest
@RunWith(AndroidJUnit4::class)
class NavHostControllerTest {
@get:Rule
val composeTestRule = createComposeRule()
@Test
fun testRememberAnimatedNavController() {
lateinit var navController: NavHostController
composeTestRule.setContent {
navController = rememberAnimatedNavController()
// get state to trigger recompose on navigate
navController.currentBackStackEntryAsState().value
AnimatedNavHost(navController, startDestination = first) {
composable(first) { BasicText(first) }
composable(second) { BasicText(second) }
}
}
val navigator = composeTestRule.runOnIdle {
navController.navigatorProvider[AnimatedComposeNavigator::class]
}
// trigger recompose
composeTestRule.runOnIdle {
navController.navigate(second)
}
composeTestRule.runOnIdle {
assertThat(navController.navigatorProvider[AnimatedComposeNavigator::class])
.isEqualTo(navigator)
}
}
@Test
fun testRememberAnimatedNavControllerAddsCustomNavigator() {
lateinit var navController: NavHostController
composeTestRule.setContent {
val customNavigator = remember { NoOpNavigator() }
navController = rememberAnimatedNavController(customNavigator)
// get state to trigger recompose on navigate
navController.currentBackStackEntryAsState().value
AnimatedNavHost(navController, startDestination = first) {
composable(first) { BasicText(first) }
composable(second) { BasicText(second) }
}
}
val navigator = composeTestRule.runOnIdle {
navController.navigatorProvider[NoOpNavigator::class]
}
// trigger recompose
composeTestRule.runOnIdle {
navController.navigate(second)
}
composeTestRule.runOnIdle {
assertThat(navController.navigatorProvider[NoOpNavigator::class])
.isEqualTo(navigator)
}
}
}
private const val first = "first"
private const val second = "second"