Add tests on DefaultFocusedTimelineMediaGalleryDataSourceFactory

libraries/mediaviewer/impl/src/test/kotlin/io/element/android/libraries/mediaviewer/impl/gallery/DefaultFocusedTimelineMediaGalleryDataSourceFactoryTest.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.mediaviewer.impl.gallery
+
+import com.google.common.truth.Truth.assertThat
+import io.element.android.libraries.matrix.test.AN_EVENT_ID
+import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
+import io.element.android.libraries.mediaviewer.impl.gallery.ui.aMediaItemImage
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+
+class DefaultFocusedTimelineMediaGalleryDataSourceFactoryTest {
+    @Test
+    fun `createFor should create a TimelineMediaGalleryDataSource`() = runTest {
+        val sut = DefaultFocusedTimelineMediaGalleryDataSourceFactory(
+            room = FakeMatrixRoom(),
+            timelineMediaItemsFactory = createTimelineMediaItemsFactory(),
+            mediaItemsPostProcessor = MediaItemsPostProcessor(),
+        )
+        val result = sut.createFor(
+            eventId = AN_EVENT_ID,
+            mediaItem = aMediaItemImage(),
+        )
+        assertThat(result).isInstanceOf(TimelineMediaGalleryDataSource::class.java)
+    }
+}

libraries/mediaviewer/impl/src/test/kotlin/io/element/android/libraries/mediaviewer/impl/gallery/TimelineMediaGalleryDataSourceTest.kt

@@ -261,18 +261,20 @@ class TimelineMediaGalleryDataSourceTest {
         return TimelineMediaGalleryDataSource(
             room = room,
             mediaTimeline = LiveMediaTimeline(room),
-            timelineMediaItemsFactory = TimelineMediaItemsFactory(
+            timelineMediaItemsFactory = createTimelineMediaItemsFactory(),
-                dispatchers = testCoroutineDispatchers(),
-                virtualItemFactory = VirtualItemFactory(
-                    dateFormatter = FakeDateFormatter(),
-                ),
-                eventItemFactory = EventItemFactory(
-                    fileSizeFormatter = FakeFileSizeFormatter(),
-                    fileExtensionExtractor = FileExtensionExtractorWithoutValidation(),
-                    dateFormatter = FakeDateFormatter(),
-                ),
-            ),
             mediaItemsPostProcessor = MediaItemsPostProcessor(),
         )
     }
 }
+
+fun TestScope.createTimelineMediaItemsFactory() = TimelineMediaItemsFactory(
+    dispatchers = testCoroutineDispatchers(),
+    virtualItemFactory = VirtualItemFactory(
+        dateFormatter = FakeDateFormatter(),
+    ),
+    eventItemFactory = EventItemFactory(
+        fileSizeFormatter = FakeFileSizeFormatter(),
+        fileExtensionExtractor = FileExtensionExtractorWithoutValidation(),
+        dateFormatter = FakeDateFormatter(),
+    ),
+)