Add some tests (mainly imported from EA). Also change type from String to SessionId, RoomId, etc.

services/appnavstate/test/build.gradle.kts

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2022 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.
+ */
+
+// TODO: Remove once https://youtrack.jetbrains.com/issue/KTIJ-19369 is fixed
+@Suppress("DSL_SCOPE_VIOLATION")
+plugins {
+    id("io.element.android-library")
+}
+
+android {
+    namespace = "io.element.android.services.appnavstate.test"
+}
+
+dependencies {
+    api(projects.libraries.matrix.api)
+    api(projects.services.appnavstate.api)
+}

services/appnavstate/test/src/main/kotlin/io/element/android/services/appnavstate/test/AppNavStateFixture.kt

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+/*
+ * 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.services.appnavstate.test
+
+import io.element.android.libraries.matrix.api.core.*
+import io.element.android.services.appnavstate.api.AppNavigationState
+
+fun anAppNavigationState(
+    sessionId: SessionId? = null,
+    spaceId: SpaceId? = MAIN_SPACE,
+    roomId: RoomId? = null,
+    threadId: ThreadId? = null,
+): AppNavigationState {
+    if (sessionId == null) {
+        return AppNavigationState.Root
+    }
+    val session = AppNavigationState.Session(sessionId)
+    if (spaceId == null) {
+        return session
+    }
+    val space = AppNavigationState.Space(spaceId, session)
+    if (roomId == null) {
+        return space
+    }
+    val room = AppNavigationState.Room(roomId, space)
+    if (threadId == null) {
+        return room
+    }
+    return AppNavigationState.Thread(threadId, room)
+}