RoomList: refactor and fix tests

tests/testutils/build.gradle.kts

@@ -30,6 +30,7 @@ dependencies {
     implementation(libs.test.junit)
     implementation(libs.test.truth)
     implementation(libs.coroutines.test)
+    implementation(projects.libraries.architecture)
     implementation(projects.libraries.core)
     implementation(projects.libraries.uiStrings)
     implementation(libs.test.turbine)

tests/testutils/src/main/kotlin/io/element/android/tests/testutils/MutablePresenter.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2024 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.tests.testutils
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import io.element.android.libraries.architecture.Presenter
+import kotlinx.coroutines.flow.MutableStateFlow
+
+class MutablePresenter<State>(initialState: State) : Presenter<State> {
+    private val stateFlow = MutableStateFlow(initialState)
+
+    fun updateState(state: State) {
+        stateFlow.value = state
+    }
+
+    @Composable
+    override fun present(): State {
+        return stateFlow.collectAsState().value
+    }
+}