eatvio_app/test/core/utils/toasts_test.dart

import 'package:eatvio_app/core/utils/toasts.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  group('Toast Functions', () {
    setUpAll(() {
      // Mock Fluttertoast plugin
      TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
          .setMockMethodCallHandler(
        const MethodChannel('PonnamKarthik/fluttertoast'),
        (MethodCall methodCall) async {
          return null;
        },
      );
    });

    tearDownAll(() {
      // Clear mock handlers
      TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
          .setMockMethodCallHandler(
        const MethodChannel('PonnamKarthik/fluttertoast'),
        null,
      );
    });

    test('showInfoToast can be called without errors', () {
      // This function shows a toast, which is hard to test directly
      // In tests, we mock the plugin to avoid MissingPluginException
      showInfoToast('Test info message');
      // Test passes if no exception is thrown
    });

    test('showErrorToast can be called without errors', () {
      showErrorToast('Test error message');
    });

    test('showSuccessToast can be called without errors', () {
      showSuccessToast('Test success message');
    });

    test('showInternetConnectionToast can be called without errors', () {
      showInternetConnectionToast();
    });

    test('showInfoToast accepts different messages', () {
      final messages = ['Message 1', 'Message 2', 'Long message with special chars: !@#\$%'];

      for (final message in messages) {
        showInfoToast(message);
      }
    });

    test('showErrorToast accepts different messages', () {
      final messages = ['Error 1', 'Error 2', 'Critical error occurred'];

      for (final message in messages) {
        showErrorToast(message);
      }
    });

    test('showSuccessToast accepts different messages', () {
      final messages = ['Success 1', 'Success 2', 'Operation completed successfully'];

      for (final message in messages) {
        showSuccessToast(message);
      }
    });

    test('showInfoToast handles empty string', () {
      showInfoToast('');
    });

    test('showErrorToast handles empty string', () {
      showErrorToast('');
    });

    test('showSuccessToast handles empty string', () {
      showSuccessToast('');
    });

    test('showInfoToast handles long messages', () {
      showInfoToast('A' * 200);
    });

    test('showErrorToast handles long messages', () {
      showErrorToast('A' * 200);
    });

    test('showSuccessToast handles long messages', () {
      showSuccessToast('A' * 200);
    });

    test('showInfoToast handles messages with special characters', () {
      showInfoToast('Message with special chars: !@#\$%^&*()');
    });

    test('showErrorToast handles messages with special characters', () {
      showErrorToast('Error with special chars: !@#\$%^&*()');
    });

    test('showSuccessToast handles messages with special characters', () {
      showSuccessToast('Success with special chars: !@#\$%^&*()');
    });

    test('showInternetConnectionToast can be called multiple times', () {
      showInternetConnectionToast();
      showInternetConnectionToast();
      showInternetConnectionToast();
    });
  });
}