Tools/Castle.DynamicProxy2/Castle.DynamicProxy.Tests/BasicInterfaceProxyWithoutTargetTestCase.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 namespace Castle.DynamicProxy.Tests
  16 {
  17         using System;
  18         using System.Collections.Generic;
  19         using System.Data;
  20         using Castle.Core.Interceptor;
  21         using Castle.DynamicProxy.Tests.Interceptors;
  22         using Castle.DynamicProxy.Tests.InterClasses;
  23         using NUnit.Framework;
  24
  25         [TestFixture]
  26         public class BasicInterfaceProxyWithoutTargetTestCase : BasePEVerifyTestCase
  27         {
  28                 [Test]
  29                 [ExpectedException(typeof(NotImplementedException),
  30                         "This is a DynamicProxy2 error: the interceptor attempted to 'Proceed' for a method without a target, for example, an interface method or an abstract method"
  31                         )]
  32                 public void BasicInterfaceProxyWithValidTarget_ThrowsIfInterceptorCallsProceed()
  33                 {
  34                         IService service = (IService)
  35                                            generator.CreateInterfaceProxyWithoutTarget(
  36                                                 typeof(IService), new StandardInterceptor());
  37
  38                         service.Sum(1, 2);
  39                 }
  40
  41                 [Test]
  42                 public void CanReplaceReturnValueOfInterfaceMethod()
  43                 {
  44                         IService service = (IService)
  45                                            generator.CreateInterfaceProxyWithoutTarget(
  46                                                 typeof(IService), new ReturnThreeInterceptor());
  47
  48                         int result = service.Sum(2, 2);
  49                         Assert.AreEqual(3, result);
  50                 }
  51
  52                 [Test]
  53                 [ExpectedException(typeof(DBConcurrencyException), "Because I feel like it")]
  54                 public void CanThrowExceptionFromInterceptorOfInterfaceMethod()
  55                 {
  56                         IService service = (IService)
  57                                            generator.CreateInterfaceProxyWithoutTarget(
  58                                                 typeof(IService), new ThrowingInterceptor());
  59
  60                         service.Sum(2, 2);
  61                 }
  62
  63                 [Test]
  64                 public void ProxyWithGenericTypeThatInheritFromGenericType()
  65                 {
  66                         // Only PEVerify is enough
  67                         generator.CreateInterfaceProxyWithoutTarget<IList<int>>(new ThrowingInterceptor());
  68                 }
  69
  70                 [Test]
  71                 public void ProducesInvocationsThatCantChangeTarget()
  72                 {
  73                         IService service = (IService)
  74                                            generator.CreateInterfaceProxyWithoutTarget(
  75                                                 typeof(IService), new AssertCannotChangeTargetInterceptor(), new ReturnThreeInterceptor());
  76
  77                         int result = service.Sum(2, 2);
  78                         Assert.AreEqual(3, result);
  79                 }
  80
  81                 public class ReturnThreeInterceptor : IInterceptor
  82                 {
  83                         public void Intercept(IInvocation invocation)
  84                         {
  85                                 invocation.ReturnValue = 3;
  86                         }
  87                 }
  88
  89                 public class ThrowingInterceptor : IInterceptor
  90                 {
  91                         public void Intercept(IInvocation invocation)
  92                         {
  93                                 throw new DBConcurrencyException("Because I feel like it");
  94                         }
  95                 }
  96         }
  97 }