Mini 容器学习笔记6——组件的获取(应用)

1. 通过组件Id获取组件实例：

       [Test]
        public void GetByIdTest()
        {
            ServiceRegistry.Register<Person>("person");

            var person = ServiceLocator.Get<IPerson>("person");
            Assert.IsTrue(person != null);

            var person2 = ServiceLocator.Get<Person>("person");
            Assert.IsTrue(person2 != null);

            Assert.AreSame(person, person2);
            Assert.IsTrue(Person.HasVisited);
        }

2. 通过契约类型获取组件实例：

       [Test]
        public void GetByTypeTest()
        {
            ServiceRegistry.Register<Person>();

            var person = ServiceLocator.Get<IPerson>();
            Assert.IsTrue(person != null);

            var person2 = ServiceLocator.Get<IPerson,Person>();
            Assert.IsTrue(person2 != null);

            Assert.AreSame(person, person2);
            Assert.IsTrue(Person.HasVisited);
        }

3. 通过契约类型获取所有组件实例：

   [Contract]
    interface IPerson
    {
        string Name { get; set; }
    }

    class Person : IPerson
    {
        public string Name { get; set; }
        public static bool HasVisited;


        public Person()
        {
            HasVisited = true;
        }
    }

    [Contract]
    interface IHorse
    {
    }

    [Component]
    class RedHorse : IHorse
    {
    }

    class BlackHorse : IHorse
    {
    }

    class Person2 : IPerson
    {
        public string Name { get; set; }
        public IHorse Horse { get; set; }

        public Person2(IHorse horse)
        {
            Horse = horse;
        }

        public Person2() { }
    }

       [Test]
        public void GetAllTest()
        {
            ServiceRegistry
                .Register<Person>()
                .Register(typeof(Person2));

            var person = ServiceLocator.Get<IPerson>();
            Assert.IsTrue(person != null);
            Assert.IsTrue(typeof(IPerson).IsAssignableFrom(person.GetType()));

            var items = ServiceLocator.GetAll<IPerson>().ToArray();
            Assert.IsTrue(items.Length == 2);
            Assert.IsTrue(items[0] is Person);
            Assert.IsTrue(items[1] is Person2);

        }

4. 通过向组件的构造函数传递参数数组的方式获取：

    [Contract]
    interface IParameterConstructorInterface
    {
        int Id { get; }
        string Name { get; }
        IPerson Person { get; }
    }

    class ParameterConstructorClass : IParameterConstructorInterface
    {
        public int Id { get; private set; }
        public string Name { get; private set; }
        public IPerson Person { get; private set; }

        public ParameterConstructorClass(int id, string name, IPerson person)
        {
            Id = id;
            Name = name;
            Person = person;
        }
    }

       //传递数组的方式

       [Test]
        public void NeedParameterConstructorTest()
        {
            var person = new Person();

            ServiceRegistry.Register<ParameterConstructorClass>();

            var instance = ServiceLocator.Current.Get(typeof(IParameterConstructorInterface), 10, "ZhangSan", person) as IParameterConstructorInterface;

            Assert.IsNotNull(instance);

            Assert.IsNotNull(instance);
            Assert.AreEqual(10, instance.Id);
            Assert.IsTrue("ZhangSan"== instance.Name);
            Assert.AreSame(person, instance.Person);
        }

        //传递命名参数字典
         [Test]
        public void NeedNamedParameterConstructorTest()
        {
            var ps = new Dictionary<string, object>();
            var person = new Person();

            ps["id"] = 10;
            ps["name"] = "ZhangSan";
            ps["person"] = person;

            ServiceRegistry.Register<ParameterConstructorClass>();
            var instance = ServiceLocator.Current.Get(typeof(IParameterConstructorInterface), ps) as IParameterConstructorInterface;

            Assert.IsNotNull(instance);
            Assert.AreEqual(10, instance.Id);
            Assert.IsTrue("ZhangSan" == instance.Name);
            Assert.AreSame(person, instance.Person);

        }