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Add extension function to retrieve a Flow of NavBackStackEntries #89

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simonschiller wants to merge 4 commits into from
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Add extension function to retrieve a Flow of NavBackStackEntries #89

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c58ad20
Add extension function to retrieve a flow of NavBackStackEntries
simonschiller Oct 14, 2020
5950e78
Use Truth in tests
simonschiller Oct 15, 2020
9fe60e6
Change to extension property
simonschiller Oct 21, 2020
a04c781
Rename method to be more consistent with existing API
simonschiller Oct 24, 2020
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Use Truth in tests
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@simonschiller
simonschiller committed Oct 29, 2020
commit 5950e786285bbc2bb4359893585452f40a798d8d
7 changes: 4 additions & 3 deletions ...tion/navigation-runtime-ktx/src/androidTest/java/androidx/navigation/NavControllerTest.kt
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Expand Up @@ -21,13 +21,12 @@ import androidx.test.core.app.ApplicationProvider
import androidx.test.filters.SmallTest
import androidx.testutils.TestNavigator
import androidx.testutils.test
import kotlinx.coroutines.ExperimentalCoroutinesApi
import com.google.common.truth.Truth.assertWithMessage
import kotlinx.coroutines.flow.collect
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.flow.take
import kotlinx.coroutines.flow.withIndex
import kotlinx.coroutines.runBlocking
import org.junit.Assert.assertEquals
import org.junit.Assert.assertTrue
import org.junit.Test

Expand Down Expand Up @@ -63,7 +62,9 @@ class NavControllerTest {
.withIndex()
.onEach { (index, backStackEntry) ->
val expectedDestination = index + 1
assertEquals(expectedDestination, backStackEntry.destination.id)
assertWithMessage("Flow emitted unexpected back stack entry (wrong destination)")
.that(backStackEntry.destination.id)
.isEqualTo(expectedDestination)

if (expectedDestination < navController.graph.count()) {
navController.navigate(expectedDestination + 1)
Expand Down