test: logger is dummy by default in tests

lib/logs/logging_manager.dart

@@ -26,6 +26,13 @@ class LoggingManager {
   }
 
   static Future<LoggingManager> initialize({required bool verbose}) async {
+    final testing = Platform.environment.containsKey('FLUTTER_TEST');
+    if (testing) {
+      // Set the logger to a dummy logger during unit tests.
+      log = Logger(level: Level.nothing);
+      return LoggingManager._(File(''));
+    }
+
     final dataDir = await getApplicationSupportDirectory();
     final logFile = File('${dataDir.path}${Platform.pathSeparator}log.txt');
     if (await logFile.exists()) await logFile.delete();

test/active_window/src/active_window_test.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/foundation.dart';
-import 'package:logger/logger.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:nyrna/active_window/active_window.dart';
 import 'package:nyrna/logs/logs.dart';
@@ -12,8 +11,6 @@ const kActiveWindowStorageArea = 'activeWindow';
 
 class MockArgParser extends Mock implements ArgumentParser {}
 
-class MockLoggingManager extends Mock implements LoggingManager {}
-
 class MockNativePlatform extends Mock implements NativePlatform {}
 
 class MockProcessRepository extends Mock implements ProcessRepository {}
@@ -33,22 +30,17 @@ const testWindow = Window(
 );
 
 void main() {
-  LoggingManager loggingManager = MockLoggingManager();
-
   late NativePlatform nativePlatform;
   late ProcessRepository processRepository;
   late StorageRepository storageRepository;
 
   late ActiveWindow activeWindow;
 
-  setUpAll(() {
+  setUpAll(() async {
     argParser = MockArgParser();
     when(() => argParser.minimize).thenReturn(null);
 
-    // Set the logger to a dummy logger.
-    log = Logger(level: Level.nothing);
-    LoggingManager.instance = loggingManager;
-    when(() => loggingManager.close()).thenReturn(null);
+    await LoggingManager.initialize(verbose: false);
   });
 
   setUp(() {