Reduce test flakiness by warming up molecule tests (#1226)

appnav/src/test/kotlin/io/element/android/appnav/RootPresenterTest.kt

@@ -31,10 +31,16 @@ import io.element.android.features.rageshake.test.screenshot.FakeScreenshotHolde
 import io.element.android.services.apperror.api.AppErrorState
 import io.element.android.services.apperror.api.AppErrorStateService
 import io.element.android.services.apperror.impl.DefaultAppErrorStateService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class RootPresenterTest {
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = createPresenter()

appnav/src/test/kotlin/io/element/android/appnav/loggedin/LoggedInPresenterTest.kt

@@ -29,11 +29,18 @@ import io.element.android.libraries.matrix.test.roomlist.FakeRoomListService
 import io.element.android.libraries.push.api.PushService
 import io.element.android.libraries.pushproviders.api.Distributor
 import io.element.android.libraries.pushproviders.api.PushProvider
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.consumeItemsUntilPredicate
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class LoggedInPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = createPresenter()

features/analytics/impl/build.gradle.kts

@@ -51,4 +51,5 @@ dependencies {
     testImplementation(libs.test.mockk)
     testImplementation(projects.libraries.matrix.test)
     testImplementation(projects.services.analytics.test)
+    testImplementation(projects.tests.testutils)
 }

features/analytics/impl/src/test/kotlin/io/element/android/features/analytics/impl/AnalyticsOptInPresenterTest.kt

@@ -23,11 +23,18 @@ import com.google.common.truth.Truth.assertThat
 import io.element.android.features.analytics.api.AnalyticsOptInEvents
 import io.element.android.libraries.matrix.test.core.aBuildMeta
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class AnalyticsOptInPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - enable`() = runTest {
         val analyticsService = FakeAnalyticsService(isEnabled = false)

features/analytics/impl/src/test/kotlin/io/element/android/features/analytics/impl/preferences/AnalyticsPreferencesPresenterTest.kt

@@ -23,10 +23,17 @@ import com.google.common.truth.Truth.assertThat
 import io.element.android.features.analytics.api.AnalyticsOptInEvents
 import io.element.android.libraries.matrix.test.core.aBuildMeta
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class AnalyticsPreferencesPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state available`() = runTest {
         val presenter = DefaultAnalyticsPreferencesPresenter(

features/createroom/impl/build.gradle.kts

@@ -65,6 +65,7 @@ dependencies {
     testImplementation(projects.libraries.mediapickers.test)
     testImplementation(projects.libraries.mediaupload.test)
     testImplementation(projects.libraries.usersearch.test)
+    testImplementation(projects.tests.testutils)
 
     ksp(libs.showkase.processor)
 }

features/createroom/impl/src/test/kotlin/io/element/android/features/createroom/impl/addpeople/AddPeoplePresenterTests.kt

@@ -24,12 +24,18 @@ import io.element.android.features.createroom.impl.CreateRoomDataStore
 import io.element.android.features.createroom.impl.userlist.FakeUserListPresenterFactory
 import io.element.android.features.createroom.impl.userlist.UserListDataStore
 import io.element.android.libraries.usersearch.test.FakeUserRepository
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
 import org.junit.Before
+import org.junit.Rule
 import org.junit.Test
 
 class AddPeoplePresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private lateinit var presenter: AddPeoplePresenter
 
     @Before

features/createroom/impl/src/test/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomPresenterTests.kt

@@ -38,6 +38,7 @@ import io.element.android.libraries.mediapickers.test.FakePickerProvider
 import io.element.android.libraries.mediaupload.api.MediaUploadInfo
 import io.element.android.libraries.mediaupload.test.FakeMediaPreProcessor
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.mockkStatic
@@ -47,6 +48,7 @@ import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.test.runTest
 import org.junit.After
 import org.junit.Before
+import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.robolectric.RobolectricTestRunner
@@ -58,6 +60,10 @@ private const val AN_URI_FROM_GALLERY = "content://uri_from_gallery"
 @RunWith(RobolectricTestRunner::class)
 class ConfigureRoomPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private lateinit var presenter: ConfigureRoomPresenter
     private lateinit var userListDataStore: UserListDataStore
     private lateinit var createRoomDataStore: CreateRoomDataStore

features/createroom/impl/src/test/kotlin/io/element/android/features/createroom/impl/root/CreateRoomRootPresenterTests.kt

@@ -35,13 +35,19 @@ import io.element.android.libraries.matrix.test.core.aBuildMeta
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
 import io.element.android.libraries.usersearch.test.FakeUserRepository
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.test.runTest
 import org.junit.Before
+import org.junit.Rule
 import org.junit.Test
 
 class CreateRoomRootPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private lateinit var userRepository: FakeUserRepository
     private lateinit var presenter: CreateRoomRootPresenter
     private lateinit var fakeUserListPresenter: FakeUserListPresenter

features/createroom/impl/src/test/kotlin/io/element/android/features/createroom/impl/userlist/DefaultUserListPresenterTests.kt

@@ -25,12 +25,18 @@ import io.element.android.libraries.matrix.ui.components.aMatrixUser
 import io.element.android.libraries.matrix.ui.components.aMatrixUserList
 import io.element.android.libraries.usersearch.api.UserSearchResult
 import io.element.android.libraries.usersearch.test.FakeUserRepository
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class DefaultUserListPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val userRepository = FakeUserRepository()
 
     @Test

features/ftue/impl/build.gradle.kts

@@ -57,6 +57,7 @@ dependencies {
     testImplementation(projects.services.analytics.test)
     testImplementation(projects.libraries.permissions.impl)
     testImplementation(projects.libraries.permissions.test)
+    testImplementation(projects.tests.testutils)
 
     ksp(libs.showkase.processor)
 }

features/ftue/impl/src/test/kotlin/io/element/android/features/ftue/impl/migration/MigrationScreenPresenterTest.kt

@@ -25,10 +25,17 @@ import io.element.android.libraries.matrix.api.roomlist.RoomListService
 import io.element.android.libraries.matrix.test.A_SESSION_ID
 import io.element.android.libraries.matrix.test.FakeMatrixClient
 import io.element.android.libraries.matrix.test.roomlist.FakeRoomListService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class MigrationScreenPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial`() = runTest {
         val presenter = createPresenter()

features/ftue/impl/src/test/kotlin/io/element/android/features/ftue/impl/notifications/NotificationsOptInPresenterTests.kt

@@ -26,16 +26,22 @@ import io.element.android.libraries.permissions.api.PermissionsPresenter
 import io.element.android.libraries.permissions.impl.FakePermissionStateProvider
 import io.element.android.libraries.permissions.test.FakePermissionsPresenter
 import io.element.android.services.toolbox.test.sdk.FakeBuildVersionSdkIntProvider
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.StandardTestDispatcher
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runCurrent
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class NotificationsOptInPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private var isFinished = false
 
     @Test

features/invitelist/impl/build.gradle.kts

@@ -54,6 +54,7 @@ dependencies {
     testImplementation(projects.libraries.push.test)
     testImplementation(projects.features.invitelist.test)
     testImplementation(projects.services.analytics.test)
+    testImplementation(projects.tests.testutils)
 
     ksp(libs.showkase.processor)
 }

features/invitelist/impl/src/test/kotlin/io/element/android/features/invitelist/impl/InviteListPresenterTests.kt

@@ -44,10 +44,15 @@ import io.element.android.libraries.push.api.notifications.NotificationDrawerMan
 import io.element.android.libraries.push.test.notifications.FakeNotificationDrawerManager
 import io.element.android.services.analytics.api.AnalyticsService
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class InviteListPresenterTests {
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
 
     @Test
     fun `present - starts empty, adds invites when received`() = runTest {

features/leaveroom/impl/src/test/kotlin/io/element/android/features/leaveroom/impl/LeaveRoomPresenterImplTest.kt

@@ -29,14 +29,20 @@ import io.element.android.libraries.matrix.api.timeline.item.event.MembershipCha
 import io.element.android.libraries.matrix.test.A_ROOM_ID
 import io.element.android.libraries.matrix.test.FakeMatrixClient
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.testCoroutineDispatchers
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class LeaveRoomPresenterImplTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state hides all dialogs`() = runTest {
         val presenter = createPresenter()

features/location/impl/build.gradle.kts

@@ -57,4 +57,5 @@ dependencies {
     testImplementation(projects.libraries.matrix.test)
     testImplementation(projects.services.analytics.test)
     testImplementation(projects.features.messages.test)
+    testImplementation(projects.tests.testutils)
 }

features/location/impl/src/test/kotlin/io/element/android/features/location/impl/send/SendLocationPresenterTest.kt

@@ -34,12 +34,18 @@ import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
 import io.element.android.libraries.matrix.test.room.SendLocationInvocation
 import io.element.android.libraries.textcomposer.MessageComposerMode
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class SendLocationPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val permissionsPresenterFake = PermissionsPresenterFake()
     private val fakeMatrixRoom = FakeMatrixRoom()
     private val fakeAnalyticsService = FakeAnalyticsService()

features/location/impl/src/test/kotlin/io/element/android/features/location/impl/show/ShowLocationPresenterTest.kt

@@ -27,12 +27,18 @@ import io.element.android.features.location.impl.common.permissions.PermissionsP
 import io.element.android.features.location.impl.common.permissions.PermissionsPresenterFake
 import io.element.android.features.location.impl.common.permissions.PermissionsState
 import io.element.android.libraries.matrix.test.core.aBuildMeta
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ShowLocationPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val permissionsPresenterFake = PermissionsPresenterFake()
     private val fakeLocationActions = FakeLocationActions()
     private val fakeBuildMeta = aBuildMeta(applicationName = "app name")

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/changeserver/ChangeServerPresenterTest.kt

@@ -26,10 +26,17 @@ import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.test.A_HOMESERVER
 import io.element.android.libraries.matrix.test.A_HOMESERVER_URL
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ChangeServerPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = ChangeServerPresenter(

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/oidc/webview/OidcPresenterTest.kt

@@ -27,11 +27,18 @@ import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.test.A_THROWABLE
 import io.element.android.libraries.matrix.test.auth.A_OIDC_DATA
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class OidcPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = OidcPresenter(

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/screens/changeaccountprovider/ChangeAccountProviderPresenterTest.kt

@@ -24,10 +24,17 @@ import io.element.android.features.login.impl.accountprovider.AccountProvider
 import io.element.android.features.login.impl.accountprovider.AccountProviderDataSource
 import io.element.android.features.login.impl.changeserver.ChangeServerPresenter
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ChangeAccountProviderPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val changeServerPresenter = ChangeServerPresenter(

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/screens/confirmaccountprovider/ConfirmAccountProviderPresenterTest.kt

@@ -31,11 +31,18 @@ import io.element.android.libraries.matrix.test.A_HOMESERVER
 import io.element.android.libraries.matrix.test.A_HOMESERVER_OIDC
 import io.element.android.libraries.matrix.test.A_THROWABLE
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.waitForPredicate
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ConfirmAccountProviderPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial test`() = runTest {
         val presenter = createConfirmAccountProviderPresenter()

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/screens/loginpassword/LoginPasswordPresenterTest.kt

@@ -31,10 +31,17 @@ import io.element.android.libraries.matrix.test.A_SESSION_ID
 import io.element.android.libraries.matrix.test.A_THROWABLE
 import io.element.android.libraries.matrix.test.A_USER_NAME
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class LoginPasswordPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val authenticationService = FakeAuthenticationService()

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/screens/searchaccountprovider/SearchAccountProviderPresenterTest.kt

@@ -30,11 +30,18 @@ import io.element.android.features.login.impl.resolver.network.WellKnownSlidingS
 import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.test.A_HOMESERVER_URL
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.testCoroutineDispatchers
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class SearchAccountProviderPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val fakeWellknownRequest = FakeWellknownRequest()

features/login/impl/src/test/kotlin/io/element/android/features/login/impl/screens/waitlistscreen/WaitListPresenterTest.kt

@@ -30,10 +30,17 @@ import io.element.android.libraries.matrix.test.A_THROWABLE
 import io.element.android.libraries.matrix.test.A_USER_ID
 import io.element.android.libraries.matrix.test.auth.FakeAuthenticationService
 import io.element.android.libraries.matrix.test.core.aBuildMeta
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class WaitListPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val authenticationService = FakeAuthenticationService().apply {

features/logout/impl/build.gradle.kts

@@ -48,4 +48,5 @@ dependencies {
     testImplementation(libs.test.truth)
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
+    testImplementation(projects.tests.testutils)
 }

features/logout/impl/src/test/kotlin/io/element/android/features/logout/impl/LogoutPreferencePresenterTest.kt

@@ -25,10 +25,17 @@ import io.element.android.features.logout.api.LogoutPreferenceState
 import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.test.A_THROWABLE
 import io.element.android.libraries.matrix.test.FakeMatrixClient
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class LogoutPreferencePresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = DefaultLogoutPreferencePresenter(

features/messages/impl/src/test/kotlin/io/element/android/features/messages/MessagesPresenterTest.kt

@@ -70,6 +70,7 @@ import io.element.android.libraries.mediaupload.api.MediaSender
 import io.element.android.libraries.mediaupload.test.FakeMediaPreProcessor
 import io.element.android.libraries.textcomposer.MessageComposerMode
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.consumeItemsUntilPredicate
 import io.element.android.tests.testutils.consumeItemsUntilTimeout
 import io.element.android.tests.testutils.testCoroutineDispatchers
@@ -77,10 +78,15 @@ import io.element.android.tests.testutils.waitForPredicate
 import io.mockk.mockk
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class MessagesPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val mockMediaUrl: Uri = mockk("localMediaUri")
 
     @Test

features/messages/impl/src/test/kotlin/io/element/android/features/messages/actionlist/ActionListPresenterTest.kt

@@ -33,11 +33,18 @@ import io.element.android.features.messages.impl.timeline.model.event.aTimelineI
 import io.element.android.features.messages.impl.timeline.model.event.aTimelineItemStateEventContent
 import io.element.android.libraries.matrix.test.A_MESSAGE
 import io.element.android.libraries.matrix.test.core.aBuildMeta
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ActionListPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = anActionListPresenter(isBuildDebuggable = true)

features/messages/impl/src/test/kotlin/io/element/android/features/messages/attachments/AttachmentsPreviewPresenterTest.kt

@@ -34,13 +34,19 @@ import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
 import io.element.android.libraries.mediaupload.api.MediaPreProcessor
 import io.element.android.libraries.mediaupload.api.MediaSender
 import io.element.android.libraries.mediaupload.test.FakeMediaPreProcessor
+import io.element.android.tests.testutils.WarmUpRule
 import io.mockk.mockk
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class AttachmentsPreviewPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val mediaPreProcessor = FakeMediaPreProcessor()
     private val mockMediaUrl: Uri = mockk("localMediaUri")
 

features/messages/impl/src/test/kotlin/io/element/android/features/messages/forward/ForwardMessagesPresenterTests.kt

@@ -30,13 +30,20 @@ import io.element.android.libraries.matrix.test.FakeMatrixClient
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
 import io.element.android.libraries.matrix.test.room.aRoomSummaryDetail
 import io.element.android.libraries.matrix.test.roomlist.FakeRoomListService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ForwardMessagesPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = aPresenter()

features/messages/impl/src/test/kotlin/io/element/android/features/messages/media/viewer/MediaViewerPresenterTest.kt

@@ -33,15 +33,22 @@ import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.designsystem.utils.SnackbarDispatcher
 import io.element.android.libraries.matrix.test.media.FakeMediaLoader
 import io.element.android.libraries.matrix.test.media.aMediaSource
+import io.element.android.tests.testutils.WarmUpRule
 import io.mockk.mockk
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 private val TESTED_MEDIA_INFO = aFileInfo()
 
 class MediaViewerPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
+
     private val mockMediaUri: Uri = mockk("localMediaUri")
     private val localMediaFactory = FakeLocalMediaFactory(mockMediaUri)
 

features/messages/impl/src/test/kotlin/io/element/android/features/messages/report/ReportMessagePresenterTests.kt

@@ -28,11 +28,17 @@ import io.element.android.libraries.matrix.api.room.MatrixRoom
 import io.element.android.libraries.matrix.test.AN_EVENT_ID
 import io.element.android.libraries.matrix.test.A_USER_ID
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ReportMessagePresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `presenter - initial state`() = runTest {
         val presenter = aPresenter()

features/messages/impl/src/test/kotlin/io/element/android/features/messages/textcomposer/MessageComposerPresenterTest.kt

@@ -55,15 +55,21 @@ import io.element.android.libraries.mediaupload.api.MediaUploadInfo
 import io.element.android.libraries.mediaupload.test.FakeMediaPreProcessor
 import io.element.android.libraries.textcomposer.MessageComposerMode
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import io.mockk.mockk
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 import java.io.File
 
 class MessageComposerPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val pickerProvider = FakePickerProvider().apply {
         givenResult(mockk()) // Uri is not available in JVM, so the only way to have a non-null Uri is using Mockk
     }

features/messages/impl/src/test/kotlin/io/element/android/features/messages/timeline/TimelinePresenterTest.kt

@@ -37,15 +37,22 @@ import io.element.android.libraries.matrix.test.room.aMessageContent
 import io.element.android.libraries.matrix.test.room.anEventTimelineItem
 import io.element.android.libraries.matrix.test.timeline.FakeMatrixTimeline
 import io.element.android.libraries.matrix.ui.components.aMatrixUserList
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.awaitWithLatch
 import io.element.android.tests.testutils.testCoroutineDispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 import java.util.Date
 
 class TimelinePresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = createTimelinePresenter()

features/messages/impl/src/test/kotlin/io/element/android/features/messages/timeline/components/customreaction/CustomReactionPresenterTests.kt

@@ -26,11 +26,17 @@ import io.element.android.features.messages.impl.timeline.components.customreact
 import io.element.android.features.messages.impl.timeline.components.customreaction.CustomReactionPresenter
 import io.element.android.features.messages.impl.timeline.components.customreaction.CustomReactionState
 import io.element.android.libraries.matrix.test.AN_EVENT_ID
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class CustomReactionPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val presenter = CustomReactionPresenter(emojibaseProvider = FakeEmojibaseProvider())
 
     @Test

features/messages/impl/src/test/kotlin/io/element/android/features/messages/timeline/components/reactionsummary/ReactionSummaryPresenterTests.kt

@@ -30,10 +30,17 @@ import io.element.android.libraries.matrix.test.A_USER_ID
 import io.element.android.libraries.matrix.test.A_USER_NAME
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
 import io.element.android.libraries.matrix.test.room.aRoomMember
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ReactionSummaryPresenterTests {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val aggregatedReaction = anAggregatedReaction(userId = A_USER_ID, key = "👍", isHighlighted = true)
     private val roomMember = aRoomMember(userId = A_USER_ID,  avatarUrl = AN_AVATAR_URL, displayName = A_USER_NAME)
     private val summaryEvent = ReactionSummaryEvents.ShowReactionSummary(AN_EVENT_ID, listOf(aggregatedReaction), aggregatedReaction.key)

features/messages/impl/src/test/kotlin/io/element/android/features/messages/timeline/components/retrysendmenu/RetrySendMenuPresenterTests.kt

@@ -25,11 +25,17 @@ import io.element.android.features.messages.impl.timeline.components.retrysendme
 import io.element.android.features.messages.impl.timeline.components.retrysendmenu.RetrySendMenuPresenter
 import io.element.android.libraries.matrix.test.A_TRANSACTION_ID
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class RetrySendMenuPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private val room = FakeMatrixRoom()
     private val presenter = RetrySendMenuPresenter(room)
 

features/onboarding/impl/build.gradle.kts

@@ -48,4 +48,5 @@ dependencies {
     testImplementation(libs.test.truth)
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
+    testImplementation(projects.tests.testutils)
 }

features/onboarding/impl/src/test/kotlin/io/element/android/features/onboarding/impl/OnBoardingPresenterTest.kt

@@ -20,10 +20,17 @@ import app.cash.molecule.RecompositionMode
 import app.cash.molecule.moleculeFlow
 import app.cash.turbine.test
 import com.google.common.truth.Truth.assertThat
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class OnBoardingPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = OnBoardingPresenter()

features/poll/impl/build.gradle.kts

@@ -48,6 +48,7 @@ dependencies {
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
     testImplementation(projects.services.analytics.test)
+    testImplementation(projects.tests.testutils)
 
     ksp(libs.showkase.processor)
 }

features/poll/impl/src/test/kotlin/io/element/android/features/poll/impl/create/CreatePollPresenterTest.kt

@@ -23,12 +23,18 @@ import com.google.common.truth.Truth
 import io.element.android.libraries.matrix.api.poll.PollKind
 import io.element.android.libraries.matrix.test.room.CreatePollInvocation
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class CreatePollPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private var navUpInvocationsCount = 0
     private val fakeMatrixRoom = FakeMatrixRoom()
     // private val fakeAnalyticsService = FakeAnalyticsService() // TODO Polls: add analytics

features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/about/AboutPresenterTest.kt

@@ -20,10 +20,17 @@ import app.cash.molecule.RecompositionMode
 import app.cash.molecule.moleculeFlow
 import app.cash.turbine.test
 import com.google.common.truth.Truth.assertThat
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class AboutPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = AboutPresenter()

features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/analytics/AnalyticsSettingsPresenterTest.kt

@@ -23,10 +23,17 @@ import com.google.common.truth.Truth.assertThat
 import io.element.android.features.analytics.impl.preferences.DefaultAnalyticsPreferencesPresenter
 import io.element.android.libraries.matrix.test.core.aBuildMeta
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class AnalyticsSettingsPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val analyticsPresenter = DefaultAnalyticsPreferencesPresenter(FakeAnalyticsService(), aBuildMeta())

features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsPresenterTest.kt

@@ -28,10 +28,17 @@ import io.element.android.features.rageshake.test.rageshake.FakeRageshakeDataSto
 import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.featureflag.api.FeatureFlags
 import io.element.android.libraries.featureflag.test.FakeFeatureFlagService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class DeveloperSettingsPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - ensures initial state is correct`() = runTest {
         val rageshakePresenter = DefaultRageshakePreferencesPresenter(FakeRageShake(), FakeRageshakeDataStore())

features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/developer/tracing/ConfigureTracingPresenterTest.kt

@@ -22,11 +22,17 @@ import app.cash.turbine.test
 import com.google.common.truth.Truth.assertThat
 import io.element.android.libraries.matrix.api.tracing.LogLevel
 import io.element.android.libraries.matrix.api.tracing.Target
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.waitForPredicate
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class ConfigureTracingPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
     @Test
     fun `present - initial state`() = runTest {
         val store = InMemoryTracingConfigurationStore()

features/preferences/impl/src/test/kotlin/io/element/android/features/preferences/impl/root/PreferencesRootPresenterTest.kt

@@ -30,10 +30,17 @@ import io.element.android.libraries.matrix.test.A_USER_NAME
 import io.element.android.libraries.matrix.test.FakeMatrixClient
 import io.element.android.libraries.matrix.test.verification.FakeSessionVerificationService
 import io.element.android.services.analytics.test.FakeAnalyticsService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class PreferencesRootPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val matrixClient = FakeMatrixClient()

features/rageshake/impl/build.gradle.kts

@@ -57,4 +57,5 @@ dependencies {
     testImplementation(libs.test.mockk)
     testImplementation(projects.libraries.matrix.test)
     testImplementation(projects.features.rageshake.test)
+    testImplementation(projects.tests.testutils)
 }

features/rageshake/impl/src/test/kotlin/io/element/android/features/rageshake/impl/bugreport/BugReportPresenterTest.kt

@@ -26,13 +26,20 @@ import io.element.android.features.rageshake.test.screenshot.A_SCREENSHOT_URI
 import io.element.android.features.rageshake.test.screenshot.FakeScreenshotHolder
 import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.test.A_FAILURE_REASON
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 const val A_SHORT_DESCRIPTION = "bug!"
 const val A_LONG_DESCRIPTION = "I have seen a bug!"
 
 class BugReportPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = BugReportPresenter(

features/rageshake/impl/src/test/kotlin/io/element/android/features/rageshake/impl/crash/ui/CrashDetectionPresenterTest.kt

@@ -24,10 +24,17 @@ import io.element.android.features.rageshake.api.crash.CrashDetectionEvents
 import io.element.android.features.rageshake.impl.crash.DefaultCrashDetectionPresenter
 import io.element.android.features.rageshake.test.crash.A_CRASH_DATA
 import io.element.android.features.rageshake.test.crash.FakeCrashDataStore
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class CrashDetectionPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state no crash`() = runTest {
         val presenter = DefaultCrashDetectionPresenter(

features/rageshake/impl/src/test/kotlin/io/element/android/features/rageshake/impl/detection/RageshakeDetectionPresenterTest.kt

@@ -28,14 +28,20 @@ import io.element.android.features.rageshake.test.rageshake.FakeRageShake
 import io.element.android.features.rageshake.test.rageshake.FakeRageshakeDataStore
 import io.element.android.features.rageshake.test.screenshot.FakeScreenshotHolder
 import io.element.android.libraries.matrix.test.AN_EXCEPTION
+import io.element.android.tests.testutils.WarmUpRule
 import io.mockk.mockk
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
 import org.junit.BeforeClass
+import org.junit.Rule
 import org.junit.Test
 
 class RageshakeDetectionPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     companion object {
         private lateinit var aBitmap: Bitmap
 

features/rageshake/impl/src/test/kotlin/io/element/android/features/rageshake/impl/preferences/RageshakePreferencesPresenterTest.kt

@@ -24,10 +24,17 @@ import io.element.android.features.rageshake.api.preferences.RageshakePreference
 import io.element.android.features.rageshake.test.rageshake.A_SENSITIVITY
 import io.element.android.features.rageshake.test.rageshake.FakeRageShake
 import io.element.android.features.rageshake.test.rageshake.FakeRageshakeDataStore
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class RageshakePreferencesPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state available`() = runTest {
         val presenter = DefaultRageshakePreferencesPresenter(

features/roomdetails/impl/src/test/kotlin/io/element/android/features/roomdetails/RoomDetailsPresenterTests.kt

@@ -40,13 +40,19 @@ import io.element.android.libraries.matrix.test.A_SESSION_ID
 import io.element.android.libraries.matrix.test.A_USER_ID_2
 import io.element.android.libraries.matrix.test.FakeMatrixClient
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 @ExperimentalCoroutinesApi
 class RoomDetailsPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private fun aRoomDetailsPresenter(room: MatrixRoom, leaveRoomPresenter: LeaveRoomPresenter = LeaveRoomPresenterFake()): RoomDetailsPresenter {
         val roomMemberDetailsPresenterFactory = object : RoomMemberDetailsPresenter.Factory {
             override fun create(roomMemberId: UserId): RoomMemberDetailsPresenter {

features/roomdetails/impl/src/test/kotlin/io/element/android/features/roomdetails/edit/RoomDetailsEditPresenterTest.kt

@@ -32,6 +32,7 @@ import io.element.android.libraries.matrix.ui.media.AvatarAction
 import io.element.android.libraries.mediapickers.test.FakePickerProvider
 import io.element.android.libraries.mediaupload.api.MediaUploadInfo
 import io.element.android.libraries.mediaupload.test.FakeMediaPreProcessor
+import io.element.android.tests.testutils.WarmUpRule
 import io.mockk.every
 import io.mockk.mockk
 import io.mockk.mockkStatic
@@ -40,12 +41,17 @@ import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
 import org.junit.After
 import org.junit.Before
+import org.junit.Rule
 import org.junit.Test
 import java.io.File
 
 @ExperimentalCoroutinesApi
 class RoomDetailsEditPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     private lateinit var fakePickerProvider: FakePickerProvider
     private lateinit var fakeMediaPreProcessor: FakeMediaPreProcessor
 

features/roomdetails/impl/src/test/kotlin/io/element/android/features/roomdetails/impl/invite/RoomInviteMembersPresenterTest.kt

@@ -36,14 +36,20 @@ import io.element.android.libraries.matrix.ui.components.aMatrixUser
 import io.element.android.libraries.matrix.ui.components.aMatrixUserList
 import io.element.android.libraries.usersearch.api.UserSearchResult
 import io.element.android.libraries.usersearch.test.FakeUserRepository
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.testCoroutineDispatchers
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 internal class RoomInviteMembersPresenterTest {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state has no results and no search`() = runTest {
         val presenter = RoomInviteMembersPresenter(

features/roomdetails/impl/src/test/kotlin/io/element/android/features/roomdetails/members/RoomMemberListPresenterTests.kt

@@ -32,15 +32,21 @@ import io.element.android.libraries.designsystem.theme.components.SearchBarResul
 import io.element.android.libraries.matrix.api.room.MatrixRoom
 import io.element.android.libraries.matrix.api.room.MatrixRoomMembersState
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.testCoroutineDispatchers
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 @ExperimentalCoroutinesApi
 class RoomMemberListPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `search is done automatically on start, but is async`() = runTest {
         val presenter = createPresenter()

features/roomdetails/impl/src/test/kotlin/io/element/android/features/roomdetails/members/details/RoomMemberDetailsPresenterTests.kt

@@ -29,13 +29,19 @@ import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.api.room.MatrixRoomMembersState
 import io.element.android.libraries.matrix.test.A_THROWABLE
 import io.element.android.libraries.matrix.test.FakeMatrixClient
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 @ExperimentalCoroutinesApi
 class RoomMemberDetailsPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - returns the room member's data, then updates it if needed`() = runTest {
         val roomMember = aRoomMember(displayName = "Alice")

features/roomlist/impl/src/test/kotlin/io/element/android/features/roomlist/impl/RoomListPresenterTests.kt

@@ -50,15 +50,21 @@ import io.element.android.libraries.matrix.test.FakeMatrixClient
 import io.element.android.libraries.matrix.test.room.aRoomSummaryFilled
 import io.element.android.libraries.matrix.test.roomlist.FakeRoomListService
 import io.element.android.libraries.matrix.test.verification.FakeSessionVerificationService
+import io.element.android.tests.testutils.WarmUpRule
 import io.element.android.tests.testutils.consumeItemsUntilPredicate
 import io.element.android.tests.testutils.testCoroutineDispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.test.TestScope
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class RoomListPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - should start with no user and then load user with success`() = runTest {
         val presenter = createRoomListPresenter()

features/verifysession/impl/build.gradle.kts

@@ -47,6 +47,7 @@ dependencies {
     testImplementation(libs.test.truth)
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
+    testImplementation(projects.tests.testutils)
 
     ksp(libs.showkase.processor)
 }

features/verifysession/impl/src/test/kotlin/io/element/android/features/verifysession/impl/VerifySelfSessionPresenterTests.kt

@@ -26,13 +26,19 @@ import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.matrix.api.verification.VerificationEmoji
 import io.element.android.libraries.matrix.api.verification.VerificationFlowState
 import io.element.android.libraries.matrix.test.verification.FakeSessionVerificationService
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 @ExperimentalCoroutinesApi
 class VerifySelfSessionPresenterTests {
 
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - Initial state is received`() = runTest {
         val presenter = createPresenter()

libraries/permissions/impl/build.gradle.kts

@@ -57,6 +57,7 @@ dependencies {
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
     testImplementation(projects.libraries.permissions.test)
+    testImplementation(projects.tests.testutils)
 
     ksp(libs.showkase.processor)
 }

libraries/permissions/impl/src/test/kotlin/io/element/android/libraries/permissions/impl/DefaultPermissionsPresenterTest.kt

@@ -26,12 +26,19 @@ import com.google.accompanist.permissions.PermissionStatus
 import com.google.common.truth.Truth.assertThat
 import io.element.android.libraries.permissions.api.PermissionsEvents
 import io.element.android.libraries.permissions.test.InMemoryPermissionsStore
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 const val A_PERMISSION = "A_PERMISSION"
 
 class DefaultPermissionsPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val permissionsStore = InMemoryPermissionsStore()

libraries/permissions/noop/build.gradle.kts

@@ -31,4 +31,5 @@ dependencies {
     testImplementation(libs.molecule.runtime)
     testImplementation(libs.test.truth)
     testImplementation(libs.test.turbine)
+    testImplementation(projects.tests.testutils)
 }

libraries/permissions/noop/src/test/kotlin/io/element/android/libraries/permissions/noop/NoopPermissionsPresenterTest.kt

@@ -20,10 +20,17 @@ import app.cash.molecule.RecompositionMode
 import app.cash.molecule.moleculeFlow
 import app.cash.turbine.test
 import com.google.common.truth.Truth.assertThat
+import io.element.android.tests.testutils.WarmUpRule
 import kotlinx.coroutines.test.runTest
+import org.junit.Rule
 import org.junit.Test
 
 class NoopPermissionsPresenterTest {
+
+    @Rule
+    @JvmField
+    val warmUpRule = WarmUpRule()
+
     @Test
     fun `present - initial state`() = runTest {
         val presenter = NoopPermissionsPresenter()

tests/testutils/build.gradle.kts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 plugins {
-    id("io.element.android-library")
+    id("io.element.android-compose-library")
     alias(libs.plugins.ksp)
 }
 
@@ -31,4 +31,5 @@ dependencies {
     implementation(libs.coroutines.test)
     implementation(projects.libraries.core)
     implementation(libs.test.turbine)
+    implementation(libs.molecule.runtime)
 }

tests/testutils/src/main/kotlin/io/element/android/tests/testutils/WarmUpRule.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * 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 io.element.android.tests.testutils
+
+import app.cash.molecule.RecompositionMode
+import app.cash.molecule.moleculeFlow
+import app.cash.turbine.test
+import kotlinx.coroutines.test.runTest
+import org.junit.rules.TestRule
+import org.junit.runner.Description
+import org.junit.runners.model.Statement
+import kotlin.time.Duration.Companion.seconds
+
+/**
+ * moleculeFlow can take time to initialise during the first test of any given
+ * test class.
+ *
+ * Applying this test rule ensures that the slow initialisation is not done
+ * inside runTest which has a short default timeout.
+ */
+class WarmUpRule: TestRule {
+    override fun apply(base: Statement, description: Description): Statement = object: Statement() {
+        override fun evaluate() {
+            runTest(timeout = 60.seconds) {
+                moleculeFlow(RecompositionMode.Immediate) {
+                    // Do nothing
+                }.test {
+                    awaitItem() // Await a Unit composition
+                }
+            }
+            base.evaluate()
+        }
+    }
+}