pkgs/ffigen/test/native_objc_test/cast_test.dart

// Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// Objective C support is only available on mac.

@TestOn('mac-os')

import 'dart:ffi';
import 'dart:io';

import 'package:ffigen/ffigen.dart';
import 'package:path/path.dart' as path;
import 'package:test/test.dart';
import 'package:yaml/yaml.dart';
import '../test_utils.dart';
import 'cast_bindings.dart';

void main() {
  late Castaway testInstance;
  late CastTestObjCLibrary lib;

  group('cast', () {
    setUpAll(() {
      logWarnings();
      final dylib = File('test/native_objc_test/cast_test.dylib');
      verifySetupFile(dylib);
      lib = CastTestObjCLibrary(DynamicLibrary.open(dylib.absolute.path));
      testInstance = Castaway.new1(lib);
    });

    test('generate_bindings', () {
      final config = Config.fromYaml(loadYaml(
          File(path.join('test', 'native_objc_test', 'cast_config.yaml'))
              .readAsStringSync()) as YamlMap);
      final library = parse(config);
      final file = File(
        path.join('test', 'debug_generated', 'cast_test.dart'),
      );
      library.generateFile(file);

      try {
        final actual = file.readAsStringSync();
        final expected = File(path.join(config.output)).readAsStringSync();
        expect(actual, expected);
        if (file.existsSync()) {
          file.delete();
        }
      } catch (e) {
        print('Failed test: Debug generated file: ${file.absolute.path}');
        rethrow;
      }
    });

    test('castFrom', () {
      final fromCast = Castaway.castFrom(testInstance.meAsNSObject());
      expect(fromCast, testInstance);
    });

    test('castFromPointer', () {
      final meAsInt = testInstance.meAsInt();
      final fromCast = Castaway.castFromPointer(
          lib, Pointer<ObjCObject>.fromAddress(meAsInt));
      expect(fromCast, testInstance);
    });

    test('equality equals', () {
      final meAsInt = testInstance.meAsInt();
      final fromCast = Castaway.castFromPointer(
          lib, Pointer<ObjCObject>.fromAddress(meAsInt));
      expect(fromCast, testInstance);
    });

    test('equality not equals', () {
      final meAsInt = testInstance.meAsInt();
      final fromCast = Castaway.castFromPointer(
          lib, Pointer<ObjCObject>.fromAddress(meAsInt));
      expect(fromCast, isNot(equals(NSObject.new1(lib))));
    });
  });
}