FLUT-940227-[others]: Updated test folder

Author: AswiniDileep

lib/main.dart

@@ -2,19 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:syncfusion_flutter_charts/charts.dart';
 
 void main() {
-  runApp(const MyApp());
-}
-
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
-
-  @override
-  Widget build(BuildContext context) {
-    return const MaterialApp(
-      debugShowCheckedModeBanner: false,
-      home: HeatMap(),
-    );
-  }
+  runApp(const HeatMap());
 }
 
 class HeatMap extends StatefulWidget {
@@ -81,8 +69,11 @@ class HeatMapState extends State<HeatMap> {
 
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      body: _buildHeatmapChart(),
+    return MaterialApp(
+      debugShowCheckedModeBanner: false,
+      home: Scaffold(
+        body: _buildHeatmapChart(),
+      ),
     );
   }
 

test/widget_test.dart

@@ -0,0 +1,30 @@
+// This is a basic Flutter widget test.
+//
+// To perform an interaction with a widget in your test, use the WidgetTester
+// utility in the flutter_test package. 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:heatmap/main.dart';
+
+void main() {
+  testWidgets('Counter increments smoke test', (WidgetTester tester) async {
+    // Build our app and trigger a frame.
+    await tester.pumpWidget(const HeatMap());
+
+    // 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);
+  });
+}