Flutter Silesia #6 snippets

intro_permissions_1.dart

PatrolTester $;

$.native.grantPermissionWhenInUse()
  
$.native.grantPermissionOnlyThisTime();

$.native.denyPermission();

intro_permissions_2.dart

$.native.pressHome();

$.native.openNotifications();

$.native.tapOnNotificationBySelector(
  Selector(textContains: 'Someone likes'),  
);

problem_1.dart

void main() {
  test('alpha', () {});
  test('bravo', () {});
  test('charlie', () {});
}

problem_1_fixed.dart

import 'package:test_api/src/backend/invoker.dart';

void main() {
  test('test_explorer', () {
    final implicitTopLevelGroup = Invoker.current!.liveTest.groups.first;
    _printGroupEntry(implicitTopLevelGroup);
  });

  test('alpha', () {});
  test('bravo', () {});
  test('charlie', () {});
}

problem_1_output.txt

$ dart test test/example_test.dart
 Group:
   Test: alpha
   Test: bravo
   Test: charlie
00:00 +4: All tests passed!

problem_2.dart

String requestedTest = "bravo"; // assume this gets passed in

void main() {
  test('alpha', () {});
  test('bravo', () {});
  test('charlie', () {});
}

problem_2_fixed.dart

String requestedTest = "bravo"; // assume this gets passed in

void main() {
  patrolTest('alpha', () {});
  patrolTest('bravo', () {});
  patrolTest('charlie', () {});
}

void patrolTest(String testName, dynamic Function() body) {
  test(testName, () async {
    if (testName == requestedTest) {
      await body();
      print('executed $testName');
    } else {
      print('skipped $testName');
    }
  });
}

problem_2_output.txt

$ dart test test/example_test.dart
skipped alpha
executed bravo
skipped charlie
00:00 +3: All tests passed!

problem_3_1a.dart

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  
  runApp(/* ... */);
}

problem_3_1b.dart

void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  
  test('login flow', () { /* ... */ });
}

problem_3_1c.dart

void main() {
  PatrolBinding.ensureInitialized();
  
  patrolTest('login flow', ($) async { /* ... */ });
}

problem_3_2.dart

class PatrolBinding extends IntegrationTestWidgetsFlutterBinding {
  
  String? _currentTest;
  Map<String, String> _testResults = {};
  
  PatrolBinding() {
    setUp(() {
      _currentTest = Invoker.current!.liveTest.parentGroupName;
    });
    
    final oldReportTestException = reportTestException;
    reportTestException = (details, testDescription) {
      _testResults[_currentTest] = Failure(testDescription, '$details');
      oldReportTestException(details, testDescription);
    };
   
    tearDown(() {
      final result = _testResults[_currentTest];
      await patrolAppService.markDartTestAsCompleted(result);
    });
  }
}

problem_3_3.dart

class PatrolBinding extends IntegrationTestWidgetsFlutterBinding {
  
  String? _currentTest;
  Map<String, String> _testResults = {};
  
  PatrolBinding() {
    setUp(() {
      _currentTest = Invoker.current!.liveTest.parentGroupName;
    });
  }
}

problem_3_4.dart

class PatrolBinding extends IntegrationTestWidgetsFlutterBinding {
  
  String? _currentTest;
  Map<String, String> _testResults = {};
  
  PatrolBinding() {
    // remember current test
    
    final oldReportTestException = reportTestException;
    reportTestException = (details, testDescription) {
      _testResults[_currentTest] = Failure(testDescription, '$details');
      oldReportTestException(details, testDescription);
    };
  }
}

problem_3_5.dart

class PatrolBinding extends IntegrationTestWidgetsFlutterBinding {
  
  String? _currentTest;
  Map<String, String> _testResults = {};
  
  PatrolBinding() {
    // remember current test
    // listen for failed tests

    tearDown(() {
      final result = _testResults[_currentTest];
      await patrolAppService.markDartTestAsCompleted(result);
    });
  }
}

problem_3_6.dart

class PatrolBinding extends IntegrationTestWidgetsFlutterBinding {
  
  String? _currentTest;
  Map<String, String> _testResults = {};
  
  PatrolBinding() {
    // remember current test
    // listen for failed tests
    // send results to instrumentation
  }
}

problem_3_7.dart

class PatrolBinding extends IntegrationTestWidgetsFlutterBinding {
  
  @override
  Future<void> runTest(
    Future<void> Function() testBody,
    VoidCallback invariantTester, {
    String description = '',
    Duration? timeout,
  }) async {
    await super.runTest(
      testBody,
      invariantTester,
      description: description,
    );
    _testResults[description] ??= _success;
  }
}