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

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()