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

   1 // Copyright 2004-2007 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
  16 namespace Castle.DynamicProxy.Tests
  17 {
  18         using System;
  19         using Castle.Core.Interceptor;
  20         using Castle.DynamicProxy.Tests.Interceptors;
  21         using NUnit.Framework;
  22
  23         [TestFixture]
  24         public class OutRefParams : BasePEVerifyTestCase
  25         {
  26                 [Test]
  27                 public void CanCreateProxyOfInterfaceWithOutParameter()
  28                 {
  29                         KeepDataInterceptor interceptor = new KeepDataInterceptor();
  30                         object proxy = generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  31                         Assert.IsNotNull(proxy);
  32                 }
  33
  34                 [Test]
  35                 public void CanCallMethodWithOutParameter()
  36                 {
  37                         int i;
  38                         InvocatingInterceptor interceptor = new InvocatingInterceptor(delegate { });
  39                         WithOut proxy = (WithOut) generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  40                         proxy.Do(out i);
  41                 }
  42
  43                 [Test]
  44                 public void CanAffectValueOfOutParameter()
  45                 {
  46                         int i;
  47                         InvocatingInterceptor interceptor =
  48                                 new InvocatingInterceptor(delegate(IInvocation invocation) { invocation.Arguments[0] = 5; });
  49                         WithOut proxy = (WithOut) generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  50                         proxy.Do(out i);
  51                         Assert.AreEqual(5, i);
  52                 }
  53
  54                 [Test]
  55                 public void CanCreateProxyWithRefParam()
  56                 {
  57                         int i = 3;
  58                         InvocatingInterceptor interceptor =
  59                                 new InvocatingInterceptor(delegate(IInvocation invocation) { invocation.Arguments[0] = 5; });
  60                         WithOut proxy = (WithOut) generator.CreateInterfaceProxyWithoutTarget(typeof(WithOut), interceptor);
  61                         proxy.Did(ref i);
  62                         Assert.AreEqual(5, i);
  63                 }
  64
  65
  66                 [Test]
  67                 public void CanCreateComplexOutRefProxyOnClass()
  68                 {
  69                         int i = 3;
  70                         string s1 = "2";
  71                         string s2;
  72                         InvocatingInterceptor interceptor = new InvocatingInterceptor(delegate(IInvocation invocation)
  73                                                                                         {
  74                                                                                                 invocation.Arguments[0] = 5;
  75                                                                                                 invocation.Arguments[1] = "aaa";
  76                                                                                                 invocation.Arguments[3] = "bbb";
  77                                                                                         });
  78                         MyClass proxy = (MyClass) generator.CreateClassProxy(typeof(MyClass), interceptor);
  79                         proxy.MyMethod(out i, ref s1, 1, out s2);
  80                         Assert.AreEqual(5, i);
  81                         Assert.AreEqual(s1, "aaa");
  82                         Assert.AreEqual(s2, "bbb");
  83                 }
  84
  85                 [Test, Explicit]
  86                 public void CanCreateProxyWithStructRefParam()
  87                 {
  88                         MyStruct s = new MyStruct(10);
  89                         MyClass proxy = (MyClass) generator.CreateClassProxy(typeof(MyClass), new StandardInterceptor());
  90                         proxy.MyMethodWithStruct(ref s);
  91                         Assert.AreEqual(20, s.Value);
  92                 }
  93
  94                 public struct MyStruct
  95                 {
  96                         public int Value;
  97
  98                         public MyStruct(int value)
  99                         {
 100                                 Value = value;
 101                         }
 102                 }
 103
 104                 public interface WithOut
 105                 {
 106                         void Do(out int i);
 107                         void Did(ref int i);
 108                 }
 109
 110
 111                 public class MyClass
 112                 {
 113                         public virtual void MyMethod(out int i, ref string s, int i1, out string s2)
 114                         {
 115                                 throw new NotImplementedException();
 116                         }
 117
 118                         public virtual void MyMethodWithStruct(ref MyStruct s)
 119                         {
 120                                 s.Value = 2 * s.Value;
 121                         }
 122                 }
 123
 124                 public class InvocatingInterceptor : IInterceptor
 125                 {
 126                         public delegate void Invoked(IInvocation invocation);
 127
 128                         private Invoked invoked;
 129
 130                         public InvocatingInterceptor(Invoked invoked)
 131                         {
 132                                 this.invoked = invoked;
 133                         }
 134
 135
 136                         public void Intercept(IInvocation invocation)
 137                         {
 138                                 invoked(invocation);
 139                         }
 140                 }
 141         }
 142 }