41 lines
1.1 KiB
Dart
41 lines
1.1 KiB
Dart
import 'package:mockito/mockito.dart';
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import 'package:rules_of_living/service/engine_service.dart';
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import 'package:rules_of_living/src/Engine.dart';
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@TestOn('browser')
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import 'package:test/test.dart';
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class MockEngine extends Mock implements Engine {}
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void main() {
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EngineService sut;
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MockEngine me;
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setUp(() {
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me = MockEngine();
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sut = EngineService();
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});
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group("Dependency Injection", () {
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test("EngineService can be passed a custom Engine", () {
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sut.engine = me;
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Engine result = sut.engine;
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expect(result, equals(me));
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});
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});
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group("caching", () {
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test("EngineService creates an engine on demand", () {
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Engine result = sut.engine;
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expect(result, TypeMatcher<Engine>());
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});
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test("EngineService returns the cached engine on subsequent requests", () {
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Engine result = sut.engine;
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expect(sut.engine, equals(result));
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});
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test("caching can be overriden by providing a custom engine", () {
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Engine first = sut.engine;
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sut.engine = me;
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Engine second = sut.engine;
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expect(second, isNot(equals(first)));
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});
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});
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}
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