Add unit test on DefaultImageLoaderHolder

libraries/session-storage/test/src/main/kotlin/io/element/android/libraries/sessionstorage/test/observer/FakeSessionObserver.kt

@@ -0,0 +1,43 @@
+/*
+ * 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.libraries.sessionstorage.test.observer
+
+import io.element.android.libraries.sessionstorage.api.observer.SessionListener
+import io.element.android.libraries.sessionstorage.api.observer.SessionObserver
+
+class FakeSessionObserver : SessionObserver {
+    private val _listeners = mutableListOf<SessionListener>()
+
+    val listeners: List<SessionListener>
+        get() = _listeners
+
+    override fun addListener(listener: SessionListener) {
+        _listeners.add(listener)
+    }
+
+    override fun removeListener(listener: SessionListener) {
+        _listeners.remove(listener)
+    }
+
+    suspend fun onSessionCreated(userId: String) {
+        listeners.forEach { it.onSessionCreated(userId) }
+    }
+
+    suspend fun onSessionDeleted(userId: String) {
+        listeners.forEach { it.onSessionDeleted(userId) }
+    }
+}