Await room: add tests on LoadingRoomStateFlowFactory

appnav/src/test/kotlin/io/element/android/appnav/room/LoadingRoomStateFlowFactoryTest.kt

@@ -0,0 +1,79 @@
+/*
+ * 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.appnav.room
+
+import app.cash.turbine.test
+import com.google.common.truth.Truth
+import io.element.android.libraries.matrix.api.room.RoomSummaryDataSource
+import io.element.android.libraries.matrix.test.A_ROOM_ID
+import io.element.android.libraries.matrix.test.A_SESSION_ID
+import io.element.android.libraries.matrix.test.FakeMatrixClient
+import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.libraries.matrix.test.room.FakeRoomSummaryDataSource
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+
+class LoadingRoomStateFlowFactoryTest {
+
+    @Test
+    fun `flow should emit Loading and then Loaded when there is a room in cache`() = runTest {
+        val room = FakeMatrixRoom(sessionId= A_SESSION_ID, roomId = A_ROOM_ID)
+        val matrixClient = FakeMatrixClient(A_SESSION_ID).apply {
+            givenGetRoomResult(A_ROOM_ID, room)
+        }
+        val flowFactory = LoadingRoomStateFlowFactory(matrixClient)
+        flowFactory
+            .create(this, A_ROOM_ID)
+        .test {
+            Truth.assertThat(awaitItem()).isEqualTo(LoadingRoomState.Loading)
+            Truth.assertThat(awaitItem()).isEqualTo(LoadingRoomState.Loaded(room))
+        }
+    }
+
+    @Test
+    fun `flow should emit Loading and then Loaded when there is a room in cache after SS is loaded`() = runTest {
+        val room = FakeMatrixRoom(sessionId= A_SESSION_ID, roomId = A_ROOM_ID)
+        val roomSummaryDataSource = FakeRoomSummaryDataSource()
+        val matrixClient = FakeMatrixClient(A_SESSION_ID, roomSummaryDataSource = roomSummaryDataSource)
+        val flowFactory = LoadingRoomStateFlowFactory(matrixClient)
+        flowFactory
+            .create(this, A_ROOM_ID)
+            .test {
+                Truth.assertThat(awaitItem()).isEqualTo(LoadingRoomState.Loading)
+                matrixClient.givenGetRoomResult(A_ROOM_ID, room)
+                roomSummaryDataSource.postLoadingState(RoomSummaryDataSource.LoadingState.Loaded(1))
+                Truth.assertThat(awaitItem()).isEqualTo(LoadingRoomState.Loaded(room))
+            }
+    }
+
+    @Test
+    fun `flow should emit Loading and then Error when there is no room in cache after SS is loaded`() = runTest {
+        val roomSummaryDataSource = FakeRoomSummaryDataSource()
+        val matrixClient = FakeMatrixClient(A_SESSION_ID, roomSummaryDataSource = roomSummaryDataSource)
+        val flowFactory = LoadingRoomStateFlowFactory(matrixClient)
+        flowFactory
+            .create(this, A_ROOM_ID)
+            .test {
+                Truth.assertThat(awaitItem()).isEqualTo(LoadingRoomState.Loading)
+                roomSummaryDataSource.postLoadingState(RoomSummaryDataSource.LoadingState.Loaded(1))
+                Truth.assertThat(awaitItem()).isEqualTo(LoadingRoomState.Error)
+            }
+    }
+
+
+
+}