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Avoid using volatile FeatureFlags in DefaultFeatureFlagServiceTest

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Benoit Marty 2025-10-17 12:33:07 +02:00 • committed by Benoit Marty
parent ba52b9ad3a
commit a24cde6d0b
1 changed files with 30 additions and 12 deletions
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42
libraries/featureflag/impl/src/test/kotlin/io/element/android/libraries/featureflag/impl/DefaultFeatureFlagServiceTest.kt
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@ -11,19 +11,37 @@ import app.cash.turbine.test
import com.google.common.truth.Truth.assertThat
import io.element.android.libraries.core.meta.BuildMeta
import io.element.android.libraries.featureflag.api.Feature
import io.element.android.libraries.featureflag.api.FeatureFlags
import io.element.android.libraries.featureflag.test.FakeFeature
import io.element.android.libraries.matrix.test.core.aBuildMeta
import kotlinx.coroutines.test.runTest
import org.junit.Test
class DefaultFeatureFlagServiceTest {
private val aFeature = FakeFeature(
key = "test_feature",
title = "Test Feature",
)
@Test
fun `given service without provider when feature is checked then it returns the default value`() = runTest {
val featureWithDefaultToFalse = FakeFeature(
key = "test_feature",
title = "Test Feature",
defaultValue = { false }
)
val featureWithDefaultToTrue = FakeFeature(
key = "test_feature_2",
title = "Test Feature 2",
defaultValue = { true }
)
val buildMeta = aBuildMeta()
val featureFlagService = createDefaultFeatureFlagService(buildMeta = buildMeta)
featureFlagService.isFeatureEnabledFlow(FeatureFlags.Space).test {
assertThat(awaitItem()).isEqualTo(FeatureFlags.Space.defaultValue(buildMeta))
featureFlagService.isFeatureEnabledFlow(featureWithDefaultToFalse).test {
assertThat(awaitItem()).isFalse()
cancelAndIgnoreRemainingEvents()
}
featureFlagService.isFeatureEnabledFlow(featureWithDefaultToTrue).test {
assertThat(awaitItem()).isTrue()
cancelAndIgnoreRemainingEvents()
}
}
@ -31,7 +49,7 @@ class DefaultFeatureFlagServiceTest {
@Test
fun `given service without provider when set enabled feature is called then it returns false`() = runTest {
val featureFlagService = createDefaultFeatureFlagService()
val result = featureFlagService.setFeatureEnabled(FeatureFlags.Space, true)
val result = featureFlagService.setFeatureEnabled(aFeature, true)
assertThat(result).isFalse()
}
@ -43,7 +61,7 @@ class DefaultFeatureFlagServiceTest {
providers = setOf(featureFlagProvider),
buildMeta = buildMeta,
)
val result = featureFlagService.setFeatureEnabled(FeatureFlags.Space, true)
val result = featureFlagService.setFeatureEnabled(aFeature, true)
assertThat(result).isTrue()
}
@ -55,10 +73,10 @@ class DefaultFeatureFlagServiceTest {
providers = setOf(featureFlagProvider),
buildMeta = buildMeta
)
featureFlagService.setFeatureEnabled(FeatureFlags.Space, true)
featureFlagService.isFeatureEnabledFlow(FeatureFlags.Space).test {
featureFlagService.setFeatureEnabled(aFeature, true)
featureFlagService.isFeatureEnabledFlow(aFeature).test {
assertThat(awaitItem()).isTrue()
featureFlagService.setFeatureEnabled(FeatureFlags.Space, false)
featureFlagService.setFeatureEnabled(aFeature, false)
assertThat(awaitItem()).isFalse()
}
}
@ -72,9 +90,9 @@ class DefaultFeatureFlagServiceTest {
providers = setOf(lowPriorityFeatureFlagProvider, highPriorityFeatureFlagProvider),
buildMeta = buildMeta
)
lowPriorityFeatureFlagProvider.setFeatureEnabled(FeatureFlags.Space, false)
highPriorityFeatureFlagProvider.setFeatureEnabled(FeatureFlags.Space, true)
featureFlagService.isFeatureEnabledFlow(FeatureFlags.Space).test {
lowPriorityFeatureFlagProvider.setFeatureEnabled(aFeature, false)
highPriorityFeatureFlagProvider.setFeatureEnabled(aFeature, true)
featureFlagService.isFeatureEnabledFlow(aFeature).test {
assertThat(awaitItem()).isTrue()
}
}
@ -143,7 +161,7 @@ class DefaultFeatureFlagServiceTest {
private fun createDefaultFeatureFlagService(
providers: Set<FeatureFlagProvider> = emptySet(),
buildMeta: BuildMeta = aBuildMeta(),
features: List<Feature> = FeatureFlags.entries,
features: List<Feature> = emptyList(),
) = DefaultFeatureFlagService(
providers = providers,
buildMeta = buildMeta,