Added a test case for calculator lib

pubspec.yaml

@@ -32,6 +32,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  test: 1.14.4
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

test/widget_test.dart

@@ -1,30 +1,10 @@
-// This is a basic Flutter widget test.
+import 'package:test/test.dart';
-//
+import 'package:ohthatsa/DayCalculator.dart';
-// To perform an interaction with a widget in your test, use the WidgetTester
-// utility that Flutter provides. For example, you can send tap and scroll
-// gestures. You can also use WidgetTester to find child widgets in the widget
-// tree, read text, and verify that the values of widget properties are correct.
-
-import 'package:flutter/material.dart';
-import 'package:flutter_test/flutter_test.dart';
-
-import 'package:ohthatsa/main.dart';
 
 void main() {
-  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+  group("DayCalculator getYearValue() ", () {
-    // Build our app and trigger a frame.
+    test("1897", () {
-    await tester.pumpWidget(OhThatsA());
+      expect(DayCalculator.getYearValue(1897), equals(2));
-
+    });
-    // Verify that our counter starts at 0.
-    expect(find.text('0'), findsOneWidget);
-    expect(find.text('1'), findsNothing);
-
-    // Tap the '+' icon and trigger a frame.
-    await tester.tap(find.byIcon(Icons.add));
-    await tester.pump();
-
-    // Verify that our counter has incremented.
-    expect(find.text('0'), findsNothing);
-    expect(find.text('1'), findsOneWidget);
   });
 }