Added a method for configuring the channel alert type (#801)

Author: martinmitrevski

CHANGELOG.md

@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### ✅ Added
 - Allow pasting images to the composer [#797](https://github.com/GetStream/stream-chat-swiftui/pull/797)
+- Add `ChatChannelListViewModel.setChannelAlertType` for setting the alert type [#801](https://github.com/GetStream/stream-chat-swiftui/pull/801)
 ### 🐞 Fixed
 - Fix allowing to send Polls when the current user does not have the capability [#798](https://github.com/GetStream/stream-chat-swiftui/pull/798)
 - Fix showing a double error indicator when sending attachments without any text [#799](https://github.com/GetStream/stream-chat-swiftui/pull/799)

Sources/StreamChatSwiftUI/ChatChannelList/ChatChannelListViewModel.swift

@@ -202,7 +202,7 @@ open class ChatChannelListViewModel: ObservableObject, ChatChannelListController
     }
 
     public func onDeleteTapped(channel: ChatChannel) {
-        channelAlertType = .deleteChannel(channel)
+        setChannelAlertType(.deleteChannel(channel))
     }
 
     public func onMoreTapped(channel: ChatChannel) {
@@ -217,13 +217,17 @@ open class ChatChannelListViewModel: ObservableObject, ChatChannelListController
         controller.deleteChannel { [weak self] error in
             if error != nil {
                 // handle error
-                self?.channelAlertType = .error
+                self?.setChannelAlertType(.error)
             }
         }
     }
 
     open func showErrorPopup(_ error: Error?) {
-        channelAlertType = .error
+        setChannelAlertType(.error)
+    }
+    
+    open func setChannelAlertType(_ channelAlertType: ChannelAlertType) {
+        self.channelAlertType = channelAlertType
     }
 
     // MARK: - ChatChannelListControllerDelegate
@@ -328,7 +332,7 @@ open class ChatChannelListViewModel: ObservableObject, ChatChannelListController
             self.loading = false
             if error != nil {
                 // handle error
-                self.channelAlertType = .error
+                self.setChannelAlertType(.error)
             } else {
                 // access channels
                 self.updateChannels()

StreamChatSwiftUITests/Tests/ChatChannelList/ChatChannelListViewModel_Tests.swift

@@ -110,7 +110,19 @@ class ChatChannelListViewModel_Tests: StreamChatTestCase {
         XCTAssert(viewModel.channelAlertType == .error)
         XCTAssert(viewModel.alertShown == true)
     }
-
+    
+    func test_channelListVM_setChannelAlertType() {
+        // Given
+        let viewModel = makeDefaultChannelListVM()
+        
+        // When
+        viewModel.setChannelAlertType(.error)
+        
+        // Then
+        XCTAssert(viewModel.channelAlertType == .error)
+        XCTAssert(viewModel.alertShown == true)
+    }
+    
     func test_channelListVM_nameForChannel() {
         // Given
         let expectedName = "test"