Merge pull request #2 from GJJ2019/add_test_cases

Adding plugin test cases

lib/src/model/easy_upi_payment_model.dart

@@ -1,5 +1,5 @@
 class EasyUpiPaymentModel {
-  EasyUpiPaymentModel({
+  const EasyUpiPaymentModel({
     required this.payeeVpa,
     required this.payeeName,
     required this.amount,

lib/src/model/transaction_detail_model.dart

@@ -58,4 +58,14 @@ class TransactionDetailModel {
   String toString() {
     return 'TransactionDetailModel(transactionId: $transactionId, responseCode: $responseCode, approvalRefNo: $approvalRefNo, transactionRefId: $transactionRefId, amount: $amount)';
   }
+
+  Map<String, dynamic> toMap() {
+    return <String, dynamic>{
+      'transactionId': transactionId,
+      'responseCode': responseCode,
+      'approvalRefNo': approvalRefNo,
+      'transactionRefId': transactionRefId,
+      'amount': amount,
+    };
+  }
 }

pubspec.yaml

@@ -16,6 +16,8 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   lint: ^1.8.2
+  mockito: ^5.2.0
+  build_runner: ^2.1.11
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

test/easy_upi_payment_method_channel_test.dart

@@ -1,20 +1,45 @@
+import 'package:easy_upi_payment/easy_upi_payment.dart';
+import 'package:easy_upi_payment/src/easy_upi_payment_method_channel.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'fake_data.dart';
+
 void main() {
-  // MethodChannelEasyUpiPayment platform = MethodChannelEasyUpiPayment();
-  // const MethodChannel channel = MethodChannel('easy_upi_payment');
-  //
-  // TestWidgetsFlutterBinding.ensureInitialized();
-  //
-  // setUp(() {
-  //   channel.setMockMethodCallHandler((MethodCall methodCall) async {
-  //     return '42';
-  //   });
-  // });
-  //
-  // tearDown(() {
-  //   channel.setMockMethodCallHandler(null);
-  // });
-  //
-  // test('getPlatformVersion', () async {
-  //   expect(await platform.getPlatformVersion(), '42');
-  // });
+  final MethodChannelEasyUpiPayment platform = MethodChannelEasyUpiPayment();
+  const MethodChannel channel = MethodChannel('easy_upi_payment');
+
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  tearDown(() {
+    channel.setMockMethodCallHandler(null);
+  });
+
+  group('startPayment with appropriate result', () {
+    setUp(() {
+      channel.setMockMethodCallHandler((MethodCall methodCall) async {
+        return fakeTransactionDetailsModel.toMap();
+      });
+    });
+
+    test('startPayment', () async {
+      expect(await platform.startPayment(fakeEasyUpiPaymentModel), fakeTransactionDetailsModel);
+    });
+  });
+
+  group('startPayment with exception', () {
+    final platformException = PlatformException(code: EasyUpiPaymentExceptionType.failedException.toString());
+    setUp(() {
+      channel.setMockMethodCallHandler((MethodCall methodCall) async {
+        return platformException;
+      });
+    });
+
+    test('startPayment', () async {
+      expect(
+        () => platform.startPayment(fakeEasyUpiPaymentModel),
+        throwsA(isA<EasyUpiPaymentException>()),
+      );
+    });
+  });
 }

test/easy_upi_payment_test.dart

@@ -1,29 +1,76 @@
-// import 'package:flutter_test/flutter_test.dart';
-// import 'package:easy_upi_payment/easy_upi_payment.dart';
-// import 'package:easy_upi_payment/easy_upi_payment_platform_interface.dart';
-// import 'package:easy_upi_payment/easy_upi_payment_method_channel.dart';
-// import 'package:plugin_platform_interface/plugin_platform_interface.dart';
-//
-// class MockEasyUpiPaymentPlatform
-//     with MockPlatformInterfaceMixin
-//     implements EasyUpiPaymentPlatform {
-//
-//   @override
-//   Future<String?> getPlatformVersion() => Future.value('42');
-// }
-//
-// void main() {
-//   final EasyUpiPaymentPlatform initialPlatform = EasyUpiPaymentPlatform.instance;
-//
-//   test('$MethodChannelEasyUpiPayment is the default instance', () {
-//     expect(initialPlatform, isInstanceOf<MethodChannelEasyUpiPayment>());
-//   });
-//
-//   test('getPlatformVersion', () async {
-//     EasyUpiPayment easyUpiPaymentPlugin = EasyUpiPayment();
-//     MockEasyUpiPaymentPlatform fakePlatform = MockEasyUpiPaymentPlatform();
-//     EasyUpiPaymentPlatform.instance = fakePlatform;
-//
-//     expect(await easyUpiPaymentPlugin.getPlatformVersion(), '42');
-//   });
-// }
+import 'package:easy_upi_payment/easy_upi_payment.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:mockito/annotations.dart';
+import 'package:mockito/mockito.dart';
+
+import 'easy_upi_payment_test.mocks.dart';
+import 'fake_data.dart';
+
+@GenerateMocks([EasyUpiPaymentPlatform])
+void main() {
+  final mockPlatform = MockEasyUpiPaymentPlatform();
+
+  test('startPayment', () async {
+    when(mockPlatform.startPayment(fakeEasyUpiPaymentModel)).thenAnswer(
+      (_) => Future.value(fakeTransactionDetailsModel),
+    );
+    expect(await mockPlatform.startPayment(fakeEasyUpiPaymentModel), fakeTransactionDetailsModel);
+  });
+
+  test('startPayment with cancelled Exception', () async {
+    when(mockPlatform.startPayment(fakeEasyUpiPaymentModel)).thenThrow(
+      EasyUpiPaymentException.fromException(
+        PlatformException(
+          code: EasyUpiPaymentExceptionType.cancelledException.toString(),
+        ),
+      ),
+    );
+    expect(
+      () => mockPlatform.startPayment(fakeEasyUpiPaymentModel),
+      throwsA(isA<EasyUpiPaymentException>()),
+    );
+  });
+
+  test('startPayment with failed Exception', () async {
+    when(mockPlatform.startPayment(fakeEasyUpiPaymentModel)).thenThrow(
+      EasyUpiPaymentException.fromException(
+        PlatformException(
+          code: EasyUpiPaymentExceptionType.failedException.toString(),
+        ),
+      ),
+    );
+    expect(
+      () => mockPlatform.startPayment(fakeEasyUpiPaymentModel),
+      throwsA(isA<EasyUpiPaymentException>()),
+    );
+  });
+
+  test('startPayment with submitted Exception', () async {
+    when(mockPlatform.startPayment(fakeEasyUpiPaymentModel)).thenThrow(
+      EasyUpiPaymentException.fromException(
+        PlatformException(
+          code: EasyUpiPaymentExceptionType.submittedException.toString(),
+        ),
+      ),
+    );
+    expect(
+      () => mockPlatform.startPayment(fakeEasyUpiPaymentModel),
+      throwsA(isA<EasyUpiPaymentException>()),
+    );
+  });
+
+  test('startPayment with unknown Exception', () async {
+    when(mockPlatform.startPayment(fakeEasyUpiPaymentModel)).thenThrow(
+      EasyUpiPaymentException.fromException(
+        PlatformException(
+          code: EasyUpiPaymentExceptionType.unknownException.toString(),
+        ),
+      ),
+    );
+    expect(
+      () => mockPlatform.startPayment(fakeEasyUpiPaymentModel),
+      throwsA(isA<EasyUpiPaymentException>()),
+    );
+  });
+}

test/easy_upi_payment_test.mocks.dart

@@ -0,0 +1,40 @@
+// Mocks generated by Mockito 5.2.0 from annotations
+// in easy_upi_payment/test/easy_upi_payment_test.dart.
+// Do not manually edit this file.
+
+import 'dart:async' as _i3;
+
+import 'package:easy_upi_payment/src/easy_upi_payment_platform_interface.dart'
+    as _i2;
+import 'package:easy_upi_payment/src/model/easy_upi_payment_model.dart' as _i5;
+import 'package:easy_upi_payment/src/model/transaction_detail_model.dart'
+    as _i4;
+import 'package:mockito/mockito.dart' as _i1;
+
+// ignore_for_file: type=lint
+// ignore_for_file: avoid_redundant_argument_values
+// ignore_for_file: avoid_setters_without_getters
+// ignore_for_file: comment_references
+// ignore_for_file: implementation_imports
+// ignore_for_file: invalid_use_of_visible_for_testing_member
+// ignore_for_file: prefer_const_constructors
+// ignore_for_file: unnecessary_parenthesis
+// ignore_for_file: camel_case_types
+
+/// A class which mocks [EasyUpiPaymentPlatform].
+///
+/// See the documentation for Mockito's code generation for more information.
+class MockEasyUpiPaymentPlatform extends _i1.Mock
+    implements _i2.EasyUpiPaymentPlatform {
+  MockEasyUpiPaymentPlatform() {
+    _i1.throwOnMissingStub(this);
+  }
+
+  @override
+  _i3.Future<_i4.TransactionDetailModel?> startPayment(
+          _i5.EasyUpiPaymentModel? easyUpiPaymentModel) =>
+      (super.noSuchMethod(
+              Invocation.method(#startPayment, [easyUpiPaymentModel]),
+              returnValue: Future<_i4.TransactionDetailModel?>.value())
+          as _i3.Future<_i4.TransactionDetailModel?>);
+}

test/fake_data.dart

@@ -0,0 +1,16 @@
+import 'package:easy_upi_payment/easy_upi_payment.dart';
+
+const fakeTransactionDetailsModel = TransactionDetailModel(
+  transactionId: 'transactionId',
+  responseCode: 'responseCode',
+  approvalRefNo: 'approvalRefNo',
+  transactionRefId: 'transactionRefId',
+  amount: 'amount',
+);
+
+const fakeEasyUpiPaymentModel = EasyUpiPaymentModel(
+  payeeVpa: 'payeeVpa',
+  payeeName: 'payeeName',
+  amount: 10.0,
+  description: 'description',
+);