[#228] [RF] Improve Cove Coverage. Cover delayed call

test/unit/_classes/controller/delayed_call_test.dart

@@ -0,0 +1,39 @@
+// Copyright 2023 The terCAD team. All rights reserved.
+// Use of this source code is governed by a CC BY-NC-ND 4.0 license that can be found in the LICENSE file.
+
+import 'package:app_finance/_classes/controller/delayed_call.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/mockito.dart';
+
+class LaunchMock extends Mock {
+  void call(int? index);
+}
+
+void main() {
+  group('DelayedCall', () {
+    test('run', () async {
+      int valid = 10;
+      int msDelay = 1;
+      final mock = LaunchMock();
+      when(mock(any)).thenReturn(null);
+      final runner = DelayedCall(msDelay);
+      for (int i = 0; i <= valid; i++) {
+        runner.run(() => mock(i));
+      }
+      await Future.delayed(Duration(milliseconds: msDelay + 1));
+      for (int i = 0; i < valid; i++) {
+        verifyNever(mock(i));
+      }
+      verify(mock(10)).called(1);
+    });
+
+    test('cancel', () {
+      int valid = 10;
+      final runner = DelayedCall(1000);
+      final mock = LaunchMock();
+      runner.run(() => mock(valid));
+      runner.cancel();
+      verify(mock(valid)).called(1);
+    });
+  });
+}