[FeatureFlag] add more tests

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
+    }
+}