Implemented first basic test

pubspec.yaml

@@ -20,6 +20,7 @@ dev_dependencies:
     sdk: flutter
 
   flutter_lints: ^4.0.0
+  test: ^1.25.15
 
 
 flutter:

test/main_test.dart

@@ -0,0 +1,7 @@
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('Counter value should be incremented', () {
+    expect(1, 1);
+  });
+}