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Class8/testing rules end #5

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95250dc
TestDispatchers
juandagaines Apr 9, 2025
e81ae11
TestDispatchers
juandagaines Apr 9, 2025
a16b9f9
navigation tests
juandagaines Apr 10, 2025
0bf0063
navigation tests
juandagaines Apr 10, 2025
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11 changes: 4 additions & 7 deletions app/src/test/java/com/juandgaines/testground/presentation/ProfileViewModelTest.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ import com.juandgaines.testground.domain.Place
import com.juandgaines.testground.domain.Profile
import com.juandgaines.testground.domain.User
import com.juandgaines.testground.domain.UserRepository
import com.juandgaines.testground.util.MainDispatcherRule
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.test.StandardTestDispatcher
Expand All @@ -24,14 +25,15 @@ import java.util.UUID
@OptIn(ExperimentalCoroutinesApi::class)
class ProfileViewModelTest {

private val testDispatcher = StandardTestDispatcher()
@get:Rule
val testDispatcher = MainDispatcherRule()

private lateinit var viewModel: ProfileViewModel
private lateinit var repository: UserRepositoryFake

@Before
fun setUp() {
Dispatchers.setMain(testDispatcher)


repository = UserRepositoryFake()
viewModel = ProfileViewModel(
Expand All @@ -44,11 +46,6 @@ class ProfileViewModelTest {
)
}

@After
fun tearDown() {
Dispatchers.resetMain()
}

@Test
fun givenValidUserId_whenLoadProfile_thenProfileIsLoaded() = runTest {
// Act
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23 changes: 23 additions & 0 deletions app/src/test/java/com/juandgaines/testground/util/MainDispatcherRule.kt
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@@ -0,0 +1,23 @@
package com.juandgaines.testground.util

import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.test.TestDispatcher
import kotlinx.coroutines.test.UnconfinedTestDispatcher
import kotlinx.coroutines.test.resetMain
import kotlinx.coroutines.test.setMain
import org.junit.rules.TestWatcher
import org.junit.runner.Description

@OptIn(ExperimentalCoroutinesApi::class)
class MainDispatcherRule(
private val testDispatcher: TestDispatcher = UnconfinedTestDispatcher()
) : TestWatcher() {
override fun starting(description: Description) {
Dispatchers.setMain(testDispatcher)
}

override fun finished(description: Description) {
Dispatchers.resetMain()
}
}