Add test for MessageComposerPresenter

libraries/core/src/main/kotlin/io/element/android/libraries/core/data/StableCharSequence.kt

@@ -24,6 +24,8 @@ class StableCharSequence(val charSequence: CharSequence) {
 
     override fun hashCode() = hash
     override fun equals(other: Any?) = other is StableCharSequence && other.hash == hash
+
+    override fun toString(): String = "StableCharSequence(\"$charSequence\")"
 }
 
 fun CharSequence.toStableCharSequence() = StableCharSequence(this)

libraries/matrixtest/src/main/kotlin/io/element/android/libraries/matrixtest/room/FakeMatrixRoom.kt

@@ -21,6 +21,7 @@ import io.element.android.libraries.matrix.core.RoomId
 import io.element.android.libraries.matrix.room.MatrixRoom
 import io.element.android.libraries.matrix.timeline.MatrixTimeline
 import io.element.android.libraries.matrixtest.timeline.FakeMatrixTimeline
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.emptyFlow
 
@@ -51,7 +52,8 @@ class FakeMatrixRoom(
     }
 
     override suspend fun sendMessage(message: String): Result<Unit> {
-        TODO("Not yet implemented")
+        delay(100)
+        return Result.success(Unit)
     }
 
     override suspend fun editMessage(originalEventId: EventId, message: String): Result<Unit> {

libraries/matrixtest/src/main/kotlin/io/element/android/libraries/matrixtest/room/RoomSummaryFixture.kt

@@ -22,14 +22,14 @@ import io.element.android.libraries.matrix.room.RoomSummaryDetails
 import io.element.android.libraries.matrixtest.core.A_ROOM_ID
 
 const val A_ROOM_NAME = "aRoomName"
-const val A_LAST_MESSAGE = "Last message"
+const val A_MESSAGE = "Hello world!"
 
 fun aRoomSummaryFilled(
     roomId: RoomId = A_ROOM_ID,
     name: String = A_ROOM_NAME,
     isDirect: Boolean = false,
     avatarURLString: String? = null,
-    lastMessage: CharSequence? = A_LAST_MESSAGE,
+    lastMessage: CharSequence? = A_MESSAGE,
     lastMessageTimestamp: Long? = null,
     unreadNotificationCount: Int = 2,
 ) = RoomSummary.Filled(
@@ -49,7 +49,7 @@ fun aRoomSummaryDetail(
     name: String = A_ROOM_NAME,
     isDirect: Boolean = false,
     avatarURLString: String? = null,
-    lastMessage: CharSequence? = A_LAST_MESSAGE,
+    lastMessage: CharSequence? = A_MESSAGE,
     lastMessageTimestamp: Long? = null,
     unreadNotificationCount: Int = 2,
 ) = RoomSummaryDetails(

libraries/matrixtest/src/main/kotlin/io/element/android/libraries/matrixtest/timeline/FakeMatrixTimeline.kt

@@ -24,6 +24,7 @@ import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.emptyFlow
 import org.matrix.rustcomponents.sdk.TimelineListener
 
+const val A_SENDER_NAME = "Alice"
 const val AN_EVENT_ID_VALUE = "!anEventId"
 val AN_EVENT_ID = EventId(AN_EVENT_ID_VALUE)