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1 using System;
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2 using System.Reflection;
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3
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4 using NUnit.Framework;
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5
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6 using BLToolkit.Reflection.Emit;
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7
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8 namespace Reflection.Emit
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9 {
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10 [TestFixture]
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11 public class MethodBuilderHelperTest
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12 {
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13 public abstract class TestObject
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14 {
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15 public abstract int Property { get; }
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16 protected abstract int Method1(float f);
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17 public abstract int Method2(float f);
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18
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19 public int Method3(float f) { return Method1(f); }
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20 }
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21
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22 [Test]
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23 public void Test()
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24 {
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25 TypeBuilderHelper typeBuilder =
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26 new AssemblyBuilderHelper("HelloWorld.dll").DefineType("Test", typeof(TestObject));
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27
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28 // Property
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29 //
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30 PropertyInfo propertyInfo = typeof(TestObject).GetProperty("Property");
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31 MethodBuilderHelper methodBuilder = typeBuilder.DefineMethod(propertyInfo.GetGetMethod());
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32 EmitHelper emit = methodBuilder.Emitter;
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33
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34 emit
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35 .ldc_i4(10)
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36 .ret()
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37 ;
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38
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39 // Method1
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40 //
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41 MethodInfo methodInfo = typeof(TestObject).GetMethod(
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42 "Method1", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
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43
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44 methodBuilder = typeBuilder.DefineMethod(methodInfo);
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45 emit = methodBuilder.Emitter;
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46
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47 emit
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48 .ldc_i4(10)
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49 .ret()
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50 ;
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51
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52 // Method2
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53 //
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54 methodInfo = typeof(TestObject).GetMethod("Method2", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
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55
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56 methodBuilder = typeBuilder.DefineMethod(
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57 "Method2",
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58 MethodAttributes.Virtual |
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59 MethodAttributes.Public |
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60 MethodAttributes.HideBySig |
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61 MethodAttributes.PrivateScope |
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62 MethodAttributes.VtableLayoutMask,
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63 typeof(int),
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64 new Type[] { typeof(float) });
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65
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66 typeBuilder.TypeBuilder.DefineMethodOverride(methodBuilder, methodInfo);
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67
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68 emit = methodBuilder.Emitter;
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69
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70 emit
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71 .ldc_i4(10)
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72 .ret()
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73 ;
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74
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75 // Create type.
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76 //
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77 Type type = typeBuilder.Create();
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78
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79 TestObject obj = (TestObject)Activator.CreateInstance(type);
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80
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81 Assert.AreEqual(10, obj.Property);
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82 Assert.AreEqual(10, obj.Method3(0));
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83 Assert.AreEqual(10, obj.Method2(0));
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84 }
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85 }
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86 }
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