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1 using System;
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2
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3 using NUnit.Framework;
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4
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5 using BLToolkit.Patterns;
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6 using BLToolkit.TypeBuilder;
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7
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8 namespace Patterns
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9 {
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10 [TestFixture]
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11 public class MustImplementAttributeTest
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12 {
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13 [MustImplement]
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14 public interface IRequiredInterface
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15 {
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16 int RequiredMethod();
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17 [MustImplement(false)]
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18 int SameMethodName();
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19 [MustImplement(false)]
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20 int OptionalMethod();
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21 }
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22
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23 public interface ISameMethodNameInterface
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24 {
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25 [MustImplement]
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26 int SameMethodName();
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27 }
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28
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29 public interface IIntermediateInterface : IRequiredInterface, ISameMethodNameInterface
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30 {
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31 [MustImplement(false, ThrowException = true)]
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32 new int OptionalMethod();
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33 }
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34
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35 public interface IOptionalInterface : IIntermediateInterface
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36 {
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37 }
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38
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39 [MustImplement(false, ThrowException = false)]
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40 public interface IOptionalInterfaceNoException : IRequiredInterface
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41 {
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42 int OtherOptionalMethod();
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43 }
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44
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45 [MustImplement(true, ThrowException = false)]
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46 public interface IOtherOptionalInterface
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47 {
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48 int SameMethodName();
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49 }
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50
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51 public struct TestClass
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52 {
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53 public int RequiredMethod()
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54 {
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55 return 1;
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56 }
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57
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58 public int SameMethodName()
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59 {
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60 return 2;
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61 }
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62 }
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63
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64 public class EmptyClass
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65 {
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66 }
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67
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68 [Test]
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69 public void Test()
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70 {
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71 var duck = DuckTyping.Implement<IOptionalInterfaceNoException> (new TestClass());
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72
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73 Assert.AreEqual(1, duck.RequiredMethod());
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74 Assert.AreEqual(0, duck.OtherOptionalMethod());
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75 Assert.AreEqual(2, duck.SameMethodName());
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76
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77 duck = DuckTyping.Aggregate<IOptionalInterfaceNoException>(new TestClass(), string.Empty, Guid.Empty);
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78
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79 Assert.AreEqual(1, duck.RequiredMethod());
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80 Assert.AreEqual(0, duck.OtherOptionalMethod());
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81 Assert.AreEqual(2, duck.SameMethodName());
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82 }
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83
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84 [Test, ExpectedException(typeof(InvalidOperationException))]
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85 public void RuntimeExceptionTest()
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86 {
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87 var duck = DuckTyping.Implement<IOptionalInterface>(new TestClass());
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88
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89 Assert.AreEqual(1, duck.RequiredMethod());
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90
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91 // Exception here.
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92 //
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93 duck.OptionalMethod();
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94 }
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95
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96 [Test, ExpectedException(typeof(InvalidOperationException))]
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97 public void RuntimeAggregateExceptionTest()
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98 {
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99 var duck = DuckTyping.Aggregate<IOptionalInterface>(new TestClass(), new EmptyClass());
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100
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101 Assert.AreEqual(1, duck.RequiredMethod());
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102
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103 // Exception here.
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104 //
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105 duck.OptionalMethod();
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106 }
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107
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108 [Test, ExpectedException(typeof(TypeBuilderException))]
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109 public void BuildtimeExceptionTest()
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110 {
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111 // Exception here.
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112 //
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113 var duck1 = DuckTyping.Implement<IOptionalInterface> (string.Empty);
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114 }
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115
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116 [Test, ExpectedException(typeof(TypeBuilderException))]
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117 public void BuildtimeAggregateExceptionTest()
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118 {
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119 // Exception here.
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120 //
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121 var duck1 = DuckTyping.Aggregate<IOptionalInterface>(string.Empty, Guid.Empty);
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122 }
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123
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124 [Test]
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125 public void AsLikeBehaviourTest()
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126 {
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127 var duck = DuckTyping.Implement<IOtherOptionalInterface>(new TestClass());
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128
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129 Assert.IsNotNull(duck);
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130
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131 duck = DuckTyping.Implement<IOtherOptionalInterface>(new EmptyClass());
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132 Assert.IsNull(duck);
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133
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134 duck = DuckTyping.Implement<IOtherOptionalInterface>(new EmptyClass());
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135 Assert.IsNull (duck);
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136
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137 duck = DuckTyping.Aggregate<IOtherOptionalInterface>(new EmptyClass(), string.Empty);
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138 Assert.IsNull (duck);
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139 }
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140 }
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141 }
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