Update unit tests for GroupChannelEditViewModel and AddMembersViewController to cover edge cases.

- Add test to verify that `GroupChannelEditViewModel` ignores duplicate gallery imports while an import is already in progress.
- Add test to ensure `GroupChannelEditViewModel` preserves the existing pending image state if a gallery import fails.
- Add test to confirm that `AddMembersViewController` cancels ongoing `LoadMore` jobs when the search query is changed.

Author: andremion

stream-chat-android-compose/src/test/kotlin/io/getstream/chat/android/compose/viewmodel/channel/GroupChannelEditViewModelTest.kt

@@ -141,6 +141,44 @@ internal class GroupChannelEditViewModelTest {
         }
     }
 
+    @Test
+    fun `duplicate gallery import is ignored while already importing`() = runTest {
+        val copyEntered = CountDownLatch(1)
+        val unblockCopy = CountDownLatch(1)
+        val copyCount = java.util.concurrent.atomic.AtomicInteger(0)
+        val blockingCopier = GalleryImageCopier {
+            copyCount.incrementAndGet()
+            copyEntered.countDown()
+            unblockCopy.await()
+            File.createTempFile("gallery", ".jpg").also { it.deleteOnExit() }
+        }
+        val sut = Fixture(galleryImageCopier = blockingCopier).get()
+
+        sut.importGalleryImage(Uri.parse("content://first"))
+        assertTrue(copyEntered.await(5, TimeUnit.SECONDS))
+
+        sut.importGalleryImage(Uri.parse("content://second"))
+        unblockCopy.countDown()
+
+        assertEquals(1, copyCount.get())
+    }
+
+    @Test
+    fun `gallery import failure preserves existing pending image`() = runTest {
+        val existingFile = File.createTempFile("existing", ".jpg").also { it.deleteOnExit() }
+        val failingCopier = GalleryImageCopier { null }
+        val sut = Fixture(galleryImageCopier = failingCopier).get()
+
+        sut.setPendingImage(existingFile)
+        sut.importGalleryImage(Uri.parse("content://bad"))
+
+        sut.state.test {
+            val state = awaitItem()
+            assertEquals(existingFile, state.pendingImageFile)
+            assertFalse(state.removeImage)
+        }
+    }
+
     @Test
     fun `save is ignored while gallery import is in progress`() = runTest {
         val copyEntered = CountDownLatch(1)

stream-chat-android-ui-common/src/test/kotlin/io/getstream/chat/android/ui/common/feature/channel/info/AddMembersViewControllerTest.kt

@@ -247,6 +247,33 @@ internal class AddMembersViewControllerTest {
         }
     }
 
+    @Test
+    fun `QueryChanged after LoadMore cancels loadMore job`() = runTest {
+        val initialUsers = listOf(randomUser(), randomUser())
+        val moreUsers = listOf(randomUser())
+        val newSearchUsers = listOf(randomUser())
+        val sut = Fixture()
+            .givenQueryUsers(users = initialUsers) // initial search
+            .givenQueryUsers(users = moreUsers) // loadMore
+            .givenQueryUsers(users = newSearchUsers) // new search after query change
+            .get(backgroundScope)
+
+        sut.state.test {
+            skipItems(2) // initial state + initial search result
+
+            sut.onViewAction(AddMembersViewAction.LoadMore)
+            skipItems(2) // isLoadingMore + loadMore result
+
+            sut.onViewAction(AddMembersViewAction.QueryChanged("new"))
+            skipItems(1) // query state update
+
+            assertTrue(awaitItem().isLoading)
+            val state = awaitItem()
+            assertFalse(state.isLoading)
+            assertEquals(newSearchUsers, state.searchResult)
+        }
+    }
+
     @Test
     fun `LoadMore appends results to searchResult`() = runTest {
         val initialUsers = listOf(randomUser(), randomUser())