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annotate Library/LibrarySystem.Tests/Core/LibraryTests.cs @ 60:fc62c971a117

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author Steven Hollidge <stevenhollidge@hotmail.com>
date Sat, 21 Apr 2012 21:19:39 +0100
parents aef06698d9e2
children
rev   line source
43
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1 using System;
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2 using System.Collections.Generic;
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3 using LibrarySystem.Core;
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4 using LibrarySystem.Interfaces;
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5 using NUnit.Framework;
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6
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7 namespace LibrarySystem.Tests.Core
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8 {
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9 [TestFixture]
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10 public class LibraryTests
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11 {
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12 #region Factory methods to setup fixed scenario for testing
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13
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14 // Factory that creates:
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15 // A library object with 10 books (2 x Lord of the Flies, 3 x 1984, 5 x Brave New World)
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16 private ILibrary CreateLibraryScenario()
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17 {
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18 #region Publisher
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19
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20 IPublisher penguin = Publisher.Create("Penguin");
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21
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22 #endregion
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23
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24 #region Publications
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25
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26 IPublication lordOfTheFlies = Publication.Create("William Golding", "0140283331", penguin, "Lord of the Flies");
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27
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28 IPublication nineteenEightyFour = Publication.Create("George Orwell", "0452284236", penguin, "Nineteen Eighty-Four");
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29
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30 IPublication braveNewWorld = Publication.Create("Aldous Huxley", "0060850523", penguin, "Brave New World");
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31
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32 #endregion
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33
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34 #region Books
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35
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36 // Lord of the flies
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37 IBook book1 = Book.Create("0000001", lordOfTheFlies);
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38 IBook book2 = Book.Create("0000002", lordOfTheFlies);
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39 IBook book3 = Book.Create("0000003", lordOfTheFlies);
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40
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41 // 1984
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42 IBook book4 = Book.Create("0000004", nineteenEightyFour);
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43 IBook book5 = Book.Create("0000005", nineteenEightyFour);
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44
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45 // Brave new world
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46 IBook book6 = Book.Create("0000006", braveNewWorld);
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47 IBook book7 = Book.Create("0000007", braveNewWorld);
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48 IBook book8 = Book.Create("0000008", braveNewWorld);
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49 IBook book9 = Book.Create("0000009", braveNewWorld);
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50 IBook book10 = Book.Create("0000010", braveNewWorld);
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51
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52 #endregion
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53
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54 #region Library
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55
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56 ILibrary library = Library.Create("Leicester Square");
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57 library.AddStock(book1, book2, book3, book4, book5, book6, book7, book8, book9, book10);
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58
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59 #endregion
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60
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61 return library;
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62 }
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63
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64 public IBook CreateBook(string bookId = "dummy")
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65 {
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66 IPublisher publisher = Publisher.Create("dummy");
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67 IPublication publication = Publication.Create("dummy", "dummy", publisher, "dummy");
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68 IBook book = Book.Create(bookId, publication);
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69 return book;
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70 }
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71
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72 #endregion
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73
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74 #region Create
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75
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76 [Test]
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77 public void Create_WithNullLocation_ThrowsArgumentNullException()
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78 {
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79 Assert.Throws<ArgumentNullException>(() => Library.Create(null));
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80 }
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81
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82 #endregion
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83
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84 #region AddStock
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85
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86 [Test]
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87 public void AddStock_WithNullBook_ShouldThrowArgumentNullException()
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88 {
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89 var library = CreateLibraryScenario();
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90 Assert.Throws<ArgumentNullException>(() => library.AddStock(null));
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91 }
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92
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93 [Test]
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94 public void AddStock_WithOneValidBookAndOneNullBook_ShouldThrowArgumentNullException()
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95 {
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96 var library = CreateLibraryScenario();
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97 var validBook = CreateBook();
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98 Assert.Throws<ArgumentNullException>(() => library.AddStock(validBook, null));
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99 }
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100
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101 [Test]
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102 public void AddStock_WithValidBook_ShouldIncreaseStockListCountByOne()
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103 {
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104 //arrange
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105 var library = CreateLibraryScenario();
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106 var expected = library.StockList.Count + 1;
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107 var dummyBook = CreateBook();
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108
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109 //act
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110 library.AddStock(dummyBook);
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111 var actual = library.StockList.Count;
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112
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113 //assert
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114 Assert.AreEqual(expected, actual);
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115 }
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116
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117 [Test]
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118 public void AddStock_WithBookIdAlreadyInStock_ShouldThrowException()
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119 {
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120 //arrange
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121 var library = CreateLibraryScenario();
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122 var idThatIsAlreadyInStock = "0000001";
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123 var dummyBook = CreateBook(idThatIsAlreadyInStock);
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124
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125 //act
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126 Assert.Throws<Exception>(
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127 () => library.AddStock(dummyBook),
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128 string.Format("Book with {0} is already in stock", idThatIsAlreadyInStock));
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129 }
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130
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131 [Test]
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132 public void AddStock_WithValidBook_ShouldMakeBookAvailable()
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133 {
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134 //arrange
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135 var library = CreateLibraryScenario();
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136 var id = "0000001";
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137 var dummyBook = CreateBook();
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138
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139 //act
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140 library.AddStock(dummyBook);
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141 var lookupBook = ((List<IStock>) library.StockList).Find(s => s.Book.Id == id);
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142 var actual = lookupBook.IsAvailable;
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143
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144 //assert
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145 Assert.IsTrue(actual);
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146 }
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147
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148 #endregion
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149
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150 #region IsBookAvailableByISBN
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151
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152 [Test]
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153 public void IsBookAvailableByISBN_WithNullISBN_ShouldThrowArgumentNullExpection()
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154 {
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155 var library = CreateLibraryScenario();
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156 Assert.Throws<ArgumentNullException>(() => library.IsBookAvailableByISBN(null));
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157 }
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158
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159 [Test]
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160 public void IsBookAvailableByISBN_WithValidISBN_ShouldReturnTrue()
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161 {
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162 var library = CreateLibraryScenario();
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163
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164 // Lord of the flies
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165 var validISBN = "0140283331";
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166
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167 var actual = library.IsBookAvailableByISBN(validISBN);
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168
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169 Assert.IsTrue(actual);
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170 }
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171
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172 [Test]
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173 public void IsBookAvailableByISBN_WithUnknownISBN_ShouldReturnFalse()
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174 {
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175 var library = CreateLibraryScenario();
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176
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177 // rubbish data
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178 var unknownISBN = "X";
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179
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180 var actual = library.IsBookAvailableByISBN(unknownISBN);
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181
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182 Assert.IsFalse(actual);
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183 }
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184
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185 #endregion
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186
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187 #region FindBooks
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188
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189 [Test]
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190 public void FindBooks_WhenNullSearchString_ShouldThrowArgumentNullExpection()
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191 {
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192 var library = CreateLibraryScenario();
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193 Assert.Throws<ArgumentNullException>(() => library.FindBooks(null));
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194 }
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195
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196
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197 [Test]
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198 public void FindBooks_WithValidSearchTitleString_ShouldReturnCorrectNumberOfBooks()
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199 {
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200 var library = CreateLibraryScenario();
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201
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202 // good search string
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203 var searchString = "Flies";
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204
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205 // number of Lord of the Flies books expected
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206 var expected = 3;
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207 var actual = library.FindBooks(searchString).Count;
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208
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209 Assert.AreEqual(expected, actual);
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210 }
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211
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212 [Test]
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213 public void FindBooks_WithValidSearchTitleStringLowerCase_ShouldReturnCorrectNumberOfBooks()
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214 {
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215 var library = CreateLibraryScenario();
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216
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217 // good search string
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218 var searchString = "flies";
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219
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220 // number of Lord of the Flies books expected
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221 var expected = 3;
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222 var actual = library.FindBooks(searchString).Count;
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223
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224 Assert.AreEqual(expected, actual);
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225 }
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226
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227 [Test]
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228 public void FindBooks_WithValidSearchStringMultiplePublications_ShouldReturnCorrectNumberOfBooks()
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229 {
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230 var library = CreateLibraryScenario();
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231
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232 // good search string
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233 var searchString = "e";
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234
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235 // number of Lord of the Flies books expected
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236 var expected = 10;
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237 var actual = library.FindBooks(searchString).Count;
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238
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239 Assert.AreEqual(expected, actual);
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240 }
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241
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242 [Test]
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243 public void FindBooks_WithValidSearchAuthorString_ShouldReturnCorrectNumberOfBooks()
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244 {
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245 var library = CreateLibraryScenario();
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246
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247 // number of Brave New World books expected
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248 var expected = 5;
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249 var searchString = "ldous";
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250
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251 var actual = library.FindBooks(searchString).Count;
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252
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253 Assert.AreEqual(expected, actual);
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254 }
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255
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256 [Test]
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257 public void FindBooks_WithInvalidSearchString_ShouldBeEmpty()
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258 {
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259 var library = CreateLibraryScenario();
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260
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261 // rubbish data
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262 var searchString = "XYZ";
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263
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264 var actual = library.FindBooks(searchString);
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265
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266 Assert.IsEmpty(actual);
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267 }
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268
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269 #endregion
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270
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271 #region GetBookById
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272
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273 [Test]
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274 public void GetBookById_WhenNullId_ShouldThrowArgumentNullExpection()
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275 {
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276 var library = CreateLibraryScenario();
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277 Assert.Throws<ArgumentNullException>(() => library.GetBookById(null));
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278 }
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279
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280 [Test]
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281 public void GetBookById_WhenValidId_ShouldReturnBook()
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282 {
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283 var library = CreateLibraryScenario();
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284 var validBookId = "0000001";
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285 var book = library.GetBookById(validBookId);
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286 Assert.IsNotNull(book);
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287 }
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288
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289 [Test]
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290 public void GetBookById_WhenValidId_ShouldReturnNull()
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291 {
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292 var library = CreateLibraryScenario();
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293 var invalidBookId = "X";
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294 var book = library.GetBookById(invalidBookId);
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295 Assert.IsNull(book);
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296 }
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297
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298 #endregion
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299
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300 #region LendBook
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301
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302 [Test]
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303 public void LendBook_ShouldMakeBookInLibraryStockListUnavailable()
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304 {
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305 //arrange
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306 var library = CreateLibraryScenario();
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307 var person = CreatePerson();
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308 var bookId = "0000001";
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309
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310 // act
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311 library.LendBook(person, bookId);
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312 var lookupBook = ((List<IStock>) library.StockList).Find(s => s.Book.Id == bookId);
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313 var actual = lookupBook.IsAvailable;
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314
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315 // assert
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316 Assert.IsFalse(actual);
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317 }
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318
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319 private IPerson CreatePerson()
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320 {
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321 var person = Person.Create("dummy", "dummy");
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322 return person;
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323 }
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324
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325 [Test]
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326 public void LendBook_WithNullPerson_ShouldThrowArgumentNullException()
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327 {
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328 //arrange
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329 var library = CreateLibraryScenario();
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330 var id = "dummy";
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331
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332 // act & assert
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333 Assert.Throws<ArgumentNullException>(() => library.LendBook(null, id));
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334 }
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335
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336 [Test]
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337 public void LendBook_WithNullBook_ShouldThrowArgumentNullException()
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338 {
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339 //arrange
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340 var library = CreateLibraryScenario();
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341 var person = CreatePerson();
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342
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343 // act & assert
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344 Assert.Throws<ArgumentNullException>(() => library.LendBook(person, null));
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345 }
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346
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347 [Test]
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348 public void LendBook_WithNullBookAndNullPerson_ShouldThrowArgumentNullException()
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349 {
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350 //arrange
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351 var library = CreateLibraryScenario();
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352
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353 // act & assert
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354 Assert.Throws<ArgumentNullException>(() => library.LendBook(null, null));
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355 }
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356
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357 [Test]
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358 public void LendBook_WithUnknownBook_ShouldThrowArgumentException()
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359 {
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360 //arrange
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361 var library = CreateLibraryScenario();
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362 var person = CreatePerson();
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363 var id = "dummy";
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364
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365 // act & assert
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366 Assert.Throws<Exception>(
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367 () => library.LendBook(person, id),
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368 string.Format("Book id {0} is not in stock", id));
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369 }
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370
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371 #endregion
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372
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373 }
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374 }