[FeatureFlag] add more tests

features/preferences/impl/build.gradle.kts

@@ -57,6 +57,7 @@ dependencies {
     testImplementation(libs.test.truth)
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
+    testImplementation(projects.libraries.featureflag.test)
     testImplementation(projects.features.rageshake.test)
     testImplementation(projects.features.rageshake.impl)
     testImplementation(projects.features.logout.impl)

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/root/PreferencesRootPresenter.kt

@@ -21,24 +21,25 @@ import io.element.android.features.logout.api.LogoutPreferencePresenter
 import io.element.android.features.rageshake.api.preferences.RageshakePreferencesPresenter
 import io.element.android.libraries.architecture.Async
 import io.element.android.libraries.architecture.Presenter
-import io.element.android.libraries.core.meta.BuildMeta
+import io.element.android.libraries.core.meta.BuildType
 import javax.inject.Inject
 
 class PreferencesRootPresenter @Inject constructor(
     private val logoutPresenter: LogoutPreferencePresenter,
     private val rageshakePresenter: RageshakePreferencesPresenter,
-    private val buildMeta: BuildMeta,
+    private val buildType: BuildType,
 ) : Presenter<PreferencesRootState> {
 
     @Composable
     override fun present(): PreferencesRootState {
         val logoutState = logoutPresenter.present()
         val rageshakeState = rageshakePresenter.present()
+        val showDeveloperSettings = buildType != BuildType.RELEASE
         return PreferencesRootState(
             logoutState = logoutState,
             rageshakeState = rageshakeState,
             myUser = Async.Uninitialized,
-            showDeveloperSettings = buildMeta.isDebug
+            showDeveloperSettings = showDeveloperSettings
         )
     }
 }

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

@@ -0,0 +1,80 @@
+/*
+ * 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.
+ */
+
+@file:OptIn(ExperimentalCoroutinesApi::class)
+
+package io.element.android.features.preferences.impl.developer
+
+import app.cash.molecule.RecompositionClock
+import app.cash.molecule.moleculeFlow
+import app.cash.turbine.test
+import com.google.common.truth.Truth.assertThat
+import io.element.android.libraries.featureflag.api.FeatureFlags
+import io.element.android.libraries.featureflag.test.FakeFeatureFlagService
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+
+class DeveloperSettingsPresenterTest {
+    @Test
+    fun `present - ensures initial state is correct`() = runTest {
+        val presenter = DeveloperSettingsPresenter(
+            FakeFeatureFlagService()
+        )
+        moleculeFlow(RecompositionClock.Immediate) {
+            presenter.present()
+        }.test {
+            val initialState = awaitItem()
+            assertThat(initialState.features).isEmpty()
+            cancelAndIgnoreRemainingEvents()
+        }
+    }
+
+    @Test
+    fun `present - ensures feature list is loaded`() = runTest {
+        val presenter = DeveloperSettingsPresenter(
+            FakeFeatureFlagService()
+        )
+        moleculeFlow(RecompositionClock.Immediate) {
+            presenter.present()
+        }.test {
+            skipItems(1)
+            val state = awaitItem()
+            assertThat(state.features).hasSize(FeatureFlags.values().size)
+            cancelAndIgnoreRemainingEvents()
+        }
+    }
+
+    @Test
+    fun `present - ensures state is updated when enabled feature event is triggered`() = runTest {
+        val presenter = DeveloperSettingsPresenter(
+            FakeFeatureFlagService()
+        )
+        moleculeFlow(RecompositionClock.Immediate) {
+            presenter.present()
+        }.test {
+            skipItems(1)
+            val stateBeforeEvent = awaitItem()
+            val featureBeforeEvent = stateBeforeEvent.features.first()
+            stateBeforeEvent.eventSink(DeveloperSettingsEvents.UpdateEnabledFeature(featureBeforeEvent, !featureBeforeEvent.isEnabled))
+            val stateAfterEvent = awaitItem()
+            val featureAfterEvent = stateAfterEvent.features.first()
+            assertThat(featureBeforeEvent.key).isEqualTo(featureAfterEvent.key)
+            assertThat(featureBeforeEvent.isEnabled).isNotEqualTo(featureAfterEvent.isEnabled)
+            cancelAndIgnoreRemainingEvents()
+        }
+    }
+}

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

@@ -27,6 +27,7 @@ import io.element.android.features.rageshake.impl.preferences.DefaultRageshakePr
 import io.element.android.features.rageshake.test.rageshake.FakeRageShake
 import io.element.android.features.rageshake.test.rageshake.FakeRageshakeDataStore
 import io.element.android.libraries.architecture.Async
+import io.element.android.libraries.core.meta.BuildType
 import io.element.android.libraries.matrix.test.FakeMatrixClient
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.test.runTest
@@ -38,7 +39,9 @@ class PreferencesRootPresenterTest {
         val logoutPresenter = DefaultLogoutPreferencePresenter(FakeMatrixClient())
         val rageshakePresenter = DefaultRageshakePreferencesPresenter(FakeRageShake(), FakeRageshakeDataStore())
         val presenter = PreferencesRootPresenter(
-            logoutPresenter, rageshakePresenter
+            logoutPresenter,
+            rageshakePresenter,
+            BuildType.DEBUG
         )
         moleculeFlow(RecompositionClock.Immediate) {
             presenter.present()
@@ -50,6 +53,7 @@ class PreferencesRootPresenterTest {
             assertThat(initialState.rageshakeState.isSupported).isTrue()
             assertThat(initialState.rageshakeState.sensitivity).isEqualTo(1.0f)
             assertThat(initialState.myUser).isEqualTo(Async.Uninitialized)
+            assertThat(initialState.showDeveloperSettings).isEqualTo(true)
         }
     }
 }

libraries/featureflag/api/src/main/kotlin/io/element/android/libraries/featureflag/api/FeatureFlagService.kt

@@ -17,7 +17,6 @@
 package io.element.android.libraries.featureflag.api
 
 interface FeatureFlagService {
-
     /**
      * @param feature the feature to check for
      *

libraries/featureflag/impl/src/main/kotlin/io/element/android/libraries/featureflag/impl/di/FeatureFlagModule.kt

@@ -20,36 +20,29 @@ import com.squareup.anvil.annotations.ContributesTo
 import dagger.Module
 import dagger.Provides
 import dagger.multibindings.ElementsIntoSet
-import io.element.android.libraries.core.meta.BuildMeta
+import io.element.android.libraries.core.meta.BuildType
 import io.element.android.libraries.di.AppScope
 import io.element.android.libraries.featureflag.impl.BuildtimeFeatureFlagProvider
 import io.element.android.libraries.featureflag.impl.FeatureFlagProvider
 import io.element.android.libraries.featureflag.impl.PreferencesFeatureFlagProvider
-import io.element.android.libraries.featureflag.impl.RuntimeFeatureFlagProvider
 
 @Module
 @ContributesTo(AppScope::class)
 object FeatureFlagModule {
 
-    @Provides
-    fun providesRuntimeFeatureFlagProvider(preferencesFeatureFlagProvider: PreferencesFeatureFlagProvider): RuntimeFeatureFlagProvider {
-        return preferencesFeatureFlagProvider
-    }
-
     @JvmStatic
     @Provides
     @ElementsIntoSet
     fun providesFeatureFlagProvider(
-        buildMeta: BuildMeta,
+        buildType: BuildType,
+        runtimeFeatureFlagProvider: PreferencesFeatureFlagProvider,
         buildtimeFeatureFlagProvider: BuildtimeFeatureFlagProvider,
-        runtimeFeatureFlagProvider: RuntimeFeatureFlagProvider,
     ): Set<FeatureFlagProvider> {
         val providers = HashSet<FeatureFlagProvider>()
-        //TODO change this condition?
-        if (buildMeta.isDebug) {
-            providers.add(runtimeFeatureFlagProvider)
-        } else {
+        if (buildType == BuildType.RELEASE) {
             providers.add(buildtimeFeatureFlagProvider)
+        } else {
+            providers.add(runtimeFeatureFlagProvider)
         }
         return providers
     }

libraries/featureflag/test/build.gradle.kts

@@ -0,0 +1,27 @@
+/*
+ * 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.
+ */
+
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "io.element.android.libraries.featureflag.test"
+
+    dependencies {
+        api(projects.libraries.featureflag.api)
+    }
+}

libraries/featureflag/test/src/main/java/io/element/android/libraries/featureflag/test/FakeFeatureFlagService.kt

@@ -0,0 +1,36 @@
+/*
+ * 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.libraries.featureflag.test
+
+import io.element.android.libraries.featureflag.api.Feature
+import io.element.android.libraries.featureflag.api.FeatureFlagService
+
+class FakeFeatureFlagService(
+    initialState: Map<String, Boolean> = emptyMap()
+) : FeatureFlagService {
+
+    private val enabledFeatures = HashMap(initialState)
+
+    override suspend fun setFeatureEnabled(feature: Feature, enabled: Boolean): Boolean {
+        enabledFeatures[feature.key] = enabled
+        return true
+    }
+
+    override suspend fun isFeatureEnabled(feature: Feature): Boolean {
+        return enabledFeatures[feature.key] ?: feature.defaultValue
+    }
+}

settings.gradle.kts

@@ -1,5 +1,7 @@
 import java.net.URI
 
+include(":libraries:featureflag:test")
+
 include(":libraries:featureflag:ui")
 
 /*