| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| using Org.Apache.REEF.Tang.Annotations; |
| using Org.Apache.REEF.Tang.Implementations.Tang; |
| using Org.Apache.REEF.Tang.Interface; |
| using Org.Apache.REEF.Tang.Util; |
| using Xunit; |
| |
| namespace Org.Apache.REEF.Tang.Tests.Tang |
| { |
| public class TestExternalConstructors |
| { |
| static ITang tang; |
| |
| public TestExternalConstructors() |
| { |
| tang = TangFactory.GetTang(); |
| } |
| |
| [Fact] |
| public void TestBindConstructor() |
| { |
| ICsConfigurationBuilder b = TangFactory.GetTang().NewConfigurationBuilder(); |
| b.BindConstructor(GenericType<A>.Class, GenericType<ACons>.Class); |
| b.BindConstructor(GenericType<B>.Class, GenericType<BCons>.Class); |
| |
| TangFactory.GetTang().NewInjector(b.Build()).GetInstance(typeof(B)); |
| } |
| |
| [Fact] |
| public void TestSImpleExternalConstructor() |
| { |
| ICsConfigurationBuilder b = TangFactory.GetTang().NewConfigurationBuilder(); |
| b.BindConstructor(GenericType<A>.Class, GenericType<ACons>.Class); |
| A aRef = (A)TangFactory.GetTang().NewInjector(b.Build()).GetInstance(typeof(A)); |
| Assert.NotNull(aRef); |
| } |
| |
| [Fact] |
| public void TestExternalLegacyConstructor() |
| { |
| ICsConfigurationBuilder cb = tang.NewConfigurationBuilder(); |
| cb.BindConstructor(GenericType<ExternalConstructorExample.Legacy>.Class, GenericType<ExternalConstructorExample.LegacyWrapper>.Class); |
| IInjector i = tang.NewInjector(cb.Build()); |
| i.BindVolatileInstance(GenericType<int>.Class, 42); |
| i.BindVolatileInstance(GenericType<string>.Class, "The meaning of life is "); |
| ExternalConstructorExample.Legacy l = i.GetInstance<ExternalConstructorExample.Legacy>(); |
| Assert.Equal(42, l.X); |
| Assert.Equal("The meaning of life is ", l.Y); |
| } |
| |
| public class A |
| { |
| public A() |
| { |
| } |
| } |
| |
| public class B |
| { |
| public B(A a) |
| { |
| } |
| } |
| |
| public class ACons : IExternalConstructor<A> |
| { |
| [Inject] |
| ACons() |
| { |
| } |
| |
| public A NewInstance() |
| { |
| return new A(); |
| } |
| } |
| |
| public class BCons : IExternalConstructor<B> |
| { |
| private readonly A a; |
| [Inject] |
| BCons(A a) |
| { |
| this.a = a; |
| } |
| |
| public B NewInstance() |
| { |
| return new B(a); |
| } |
| } |
| } |
| |
| class ExternalConstructorExample |
| { |
| public class Legacy |
| { |
| public Legacy(int x, string y) |
| { |
| this.X = x; |
| this.Y = y; |
| } |
| |
| public int X { get; set; } |
| |
| public string Y { get; set; } |
| } |
| |
| public class LegacyWrapper : IExternalConstructor<Legacy> |
| { |
| [Inject] |
| LegacyWrapper(int x, string y) |
| { |
| this.X = x; |
| this.Y = y; |
| } |
| |
| public int X { get; set; } |
| |
| public string Y { get; set; } |
| |
| public Legacy NewInstance() |
| { |
| return new Legacy(X, Y); |
| } |
| } |
| } |
| } |