Remove defaults to pass test

core/data/src/commonTest/kotlin/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNiaNetworkDataSource.kt

@@ -21,6 +21,7 @@ import com.google.samples.apps.nowinandroid.core.network.fake.FakeNiaNetworkData
 import com.google.samples.apps.nowinandroid.core.network.model.NetworkChangeList
 import com.google.samples.apps.nowinandroid.core.network.model.NetworkNewsResource
 import com.google.samples.apps.nowinandroid.core.network.model.NetworkTopic
+import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.UnconfinedTestDispatcher
 import kotlinx.serialization.json.Json
@@ -33,6 +34,7 @@ enum class CollectionType {
 /**
  * Test double for [NiaNetworkDataSource]
  */
+@OptIn(ExperimentalCoroutinesApi::class)
 class TestNiaNetworkDataSource : NiaNetworkDataSource {
 
     private val source = FakeNiaNetworkDataSource(

core/datastore-proto/src/commonMain/kotlin/com/google/samples/apps/nowinandroid/core/datastore/UserPreferences.kt

@@ -28,10 +28,10 @@ data class UserPreferences(
     val newsResourceChangeListVersion: Int,
     val hasDoneIntToStringIdMigration: Boolean,
     val hasDoneListToMapMigration: Boolean,
-    val followedTopicIds: Set<String> = emptySet(),
-    val followedAuthorIds: Set<String> = emptySet(),
-    val bookmarkedNewsResourceIds: Set<String> = emptySet(),
-    val viewedNewsResourceIds: Set<String> = emptySet(),
+    val followedTopicIds: Set<String>,
+    val followedAuthorIds: Set<String>,
+    val bookmarkedNewsResourceIds: Set<String>,
+    val viewedNewsResourceIds: Set<String>,
     val themeBrand: ThemeBrandProto,
     val darkThemeConfig: DarkThemeConfigProto,
     val shouldHideOnboarding: Boolean,
@@ -48,6 +48,10 @@ data class UserPreferences(
             darkThemeConfig = DARK_THEME_CONFIG_FOLLOW_SYSTEM,
             shouldHideOnboarding = false,
             useDynamicColor = false,
+            followedTopicIds = emptySet(),
+            followedAuthorIds = emptySet(),
+            bookmarkedNewsResourceIds = emptySet(),
+            viewedNewsResourceIds = emptySet(),
         )
     }
 }