Add MessengerIsGroupChatRunning

Sources/XXMessengerClient/Messenger/Functions/MessengerIsGroupChatRunning.swift

+import XCTestDynamicOverlay
+
+public struct MessengerIsGroupChatRunning {
+  public var run: () -> Bool
+
+  public func callAsFunction() -> Bool {
+    run()
+  }
+}
+
+extension MessengerIsGroupChatRunning {
+  public static func live(_ env: MessengerEnvironment) -> MessengerIsGroupChatRunning {
+    MessengerIsGroupChatRunning { env.groupChat.get() != nil }
+  }
+}
+
+extension MessengerIsGroupChatRunning {
+  public static let unimplemented = MessengerIsGroupChatRunning(
+    run: XCTestDynamicOverlay.unimplemented("\(Self.self)", placeholder: false)
+  )
+}

Sources/XXMessengerClient/Messenger/Messenger.swift

@@ -51,6 +51,7 @@ public struct Messenger {
   public var getNotificationReports: MessengerGetNotificationReports
   public var registerGroupRequestHandler: MessengerRegisterGroupRequestHandler
   public var registerGroupChatProcessor: MessengerRegisterGroupChatProcessor
+  public var isGroupChatRunning: MessengerIsGroupChatRunning
   public var startGroupChat: MessengerStartGroupChat
 }
 
@@ -107,6 +108,7 @@ extension Messenger {
       getNotificationReports: .live(env),
       registerGroupRequestHandler: .live(env),
       registerGroupChatProcessor: .live(env),
+      isGroupChatRunning: .live(env),
       startGroupChat: .live(env)
     )
   }
@@ -164,6 +166,7 @@ extension Messenger {
     getNotificationReports: .unimplemented,
     registerGroupRequestHandler: .unimplemented,
     registerGroupChatProcessor: .unimplemented,
+    isGroupChatRunning: .unimplemented,
     startGroupChat: .unimplemented
   )
 }

Tests/XXMessengerClientTests/Messenger/Functions/MessengerIsGroupChatRunningTests.swift

+import XCTest
+@testable import XXMessengerClient
+
+final class MessengerIsGroupChatRunningTests: XCTestCase {
+  func testIsRunning() {
+    var env: MessengerEnvironment = .unimplemented
+    env.groupChat.get = { .unimplemented }
+    let isRunning: MessengerIsGroupChatRunning = .live(env)
+
+    XCTAssertTrue(isRunning())
+  }
+
+  func testIsNotRunning() {
+    var env: MessengerEnvironment = .unimplemented
+    env.groupChat.get = { nil }
+    let isRunning: MessengerIsGroupChatRunning = .live(env)
+
+    XCTAssertFalse(isRunning())
+  }
+}