Tools/Castle.DynamicProxy2/Castle.DynamicProxy.Tests/OutRefParams.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.DynamicProxy.Tests
  16 {
  17         using System;
  18         using Castle.Core.Interceptor;
  19         using Castle.DynamicProxy.Tests.Interceptors;
  20         using NUnit.Framework;
  21
  22         [TestFixture]
  23         public class OutRefParams : BasePEVerifyTestCase
  24         {
  25                 [Test]
  26                 public void CanCreateProxyOfInterfaceWithOutParameter()
  27                 {
  28                         KeepDataInterceptor interceptor = new KeepDataInterceptor();
  29                         object proxy = generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  30                         Assert.IsNotNull(proxy);
  31                 }
  32
  33                 [Test]
  34                 public void CanCallMethodWithOutParameter()
  35                 {
  36                         int i;
  37                         InvocatingInterceptor interceptor = new InvocatingInterceptor(delegate { });
  38                         WithOut proxy = (WithOut) generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  39                         proxy.Do(out i);
  40                 }
  41
  42                 [Test]
  43                 public void CanAffectValueOfOutParameter()
  44                 {
  45                         int i;
  46                         InvocatingInterceptor interceptor =
  47                                 new InvocatingInterceptor(delegate(IInvocation invocation) { invocation.Arguments[0] = 5; });
  48                         WithOut proxy = (WithOut) generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  49                         proxy.Do(out i);
  50                         Assert.AreEqual(5, i);
  51                 }
  52
  53                 [Test]
  54                 public void CanCreateProxyWithRefParam()
  55                 {
  56                         int i = 3;
  57                         InvocatingInterceptor interceptor =
  58                                 new InvocatingInterceptor(delegate(IInvocation invocation) { invocation.Arguments[0] = 5; });
  59                         WithOut proxy = (WithOut) generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  60                         proxy.Did(ref i);
  61                         Assert.AreEqual(5, i);
  62                 }
  63
  64
  65                 [Test]
  66                 public void CanCreateComplexOutRefProxyOnClass()
  67                 {
  68                         int i = 3;
  69                         string s1 = "2";
  70                         string s2;
  71                         InvocatingInterceptor interceptor = new InvocatingInterceptor(delegate(IInvocation invocation)
  72                                                                                         {
  73                                                                                                 invocation.Arguments[0] = 5;
  74                                                                                                 invocation.Arguments[1] = "aaa";
  75                                                                                                 invocation.Arguments[3] = "bbb";
  76                                                                                         });
  77                         MyClass proxy = (MyClass) generator.CreateClassProxy(typeof(MyClass), interceptor);
  78                         proxy.MyMethod(out i, ref s1, 1, out s2);
  79                         Assert.AreEqual(5, i);
  80                         Assert.AreEqual(s1, "aaa");
  81                         Assert.AreEqual(s2, "bbb");
  82                 }
  83
  84                 [Test, Explicit]
  85                 public void CanCreateProxyWithStructRefParam()
  86                 {
  87                         MyStruct s = new MyStruct(10);
  88                         MyClass proxy = (MyClass) generator.CreateClassProxy(typeof(MyClass), new StandardInterceptor());
  89                         proxy.MyMethodWithStruct(ref s);
  90                         Assert.AreEqual(20, s.Value);
  91                 }
  92
  93                 public struct MyStruct
  94                 {
  95                         public int Value;
  96
  97                         public MyStruct(int value)
  98                         {
  99                                 Value = value;
 100                         }
 101                 }
 102
 103                 public interface WithOut
 104                 {
 105                         void Do(out int i);
 106                         void Did(ref int i);
 107                 }
 108
 109
 110                 public class MyClass
 111                 {
 112                         public virtual void MyMethod(out int i, ref string s, int i1, out string s2)
 113                         {
 114                                 throw new NotImplementedException();
 115                         }
 116
 117                         public virtual void MyMethodWithStruct(ref MyStruct s)
 118                         {
 119                                 s.Value = 2 * s.Value;
 120                         }
 121                 }
 122
 123                 public class InvocatingInterceptor : IInterceptor
 124                 {
 125                         public delegate void Invoked(IInvocation invocation);
 126
 127                         private Invoked invoked;
 128
 129                         public InvocatingInterceptor(Invoked invoked)
 130                         {
 131                                 this.invoked = invoked;
 132                         }
 133
 134
 135                         public void Intercept(IInvocation invocation)
 136                         {
 137                                 invoked(invocation);
 138                         }
 139                 }
 140         }
 141 }