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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Linq.Expressions;
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5
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6 using NUnit.Framework;
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7
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8 using BLToolkit.Data.DataProvider;
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9 using BLToolkit.Data.Linq;
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10
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11 namespace Data.Linq
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12 {
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13 using Model;
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14
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15 [TestFixture]
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16 public class Functions : TestBase
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17 {
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18 [Test]
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19 public void Contains1()
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20 {
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21 ForEachProvider(db => AreEqual(
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22 from p in Parent where new[] { 1, 2 }.Contains(p.ParentID) select p,
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23 from p in db.Parent where new[] { 1, 2 }.Contains(p.ParentID) select p));
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24 }
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25
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26 [Test]
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27 public void Contains2()
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28 {
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29 var arr = new[] { 1, 2 };
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30
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31 ForEachProvider(db => AreEqual(
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32 from p in Parent where arr.Contains(p.ParentID) select p,
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33 from p in db.Parent where arr.Contains(p.ParentID) select p));
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34 }
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35
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36 [Test]
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37 public void Contains3()
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38 {
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39 var n = 2;
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40
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41 var expected =
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42 from p in Parent
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43 where new[] { 1, n }.Contains(p.ParentID)
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44 select p;
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45
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46 ForEachProvider(data => AreEqual(expected, CompiledQuery.Compile<ITestDataContext,IQueryable<Parent>>(db =>
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47 from p in db.Parent
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48 where new[] { 1, n }.Contains(p.ParentID)
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49 select p)(data)));
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50 }
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51
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52 [Test]
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53 public void Contains4()
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54 {
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55 var arr = new[] { 1, 2 };
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56
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57 var expected =
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58 from p in Parent
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59 where arr.Contains(p.ParentID)
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60 select p;
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61
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62 ForEachProvider(data => AreEqual(expected, CompiledQuery.Compile<ITestDataContext,IQueryable<Parent>>(db =>
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63 from p in db.Parent
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64 where arr.Contains(p.ParentID)
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65 select p)(data)));
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66 }
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67
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68 [Test]
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69 public void Contains5()
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70 {
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71 var arr1 = new[] { 1, 2 };
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72 var arr2 = new[] { 1, 2, 4 };
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73
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74 var expected1 = from p in Parent where arr1.Contains(p.ParentID) select p;
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75 var expected2 = from p in Parent where arr2.Contains(p.ParentID) select p;
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76
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77 ForEachProvider(data =>
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78 {
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79 var cq = CompiledQuery.Compile<ITestDataContext,int[],IQueryable<Parent>>((db,a) =>
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80 from p in db.Parent
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81 where a.Contains(p.ParentID)
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82 select p);
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83
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84 AreEqual(expected1, cq(data, arr1));
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85 AreEqual(expected2, cq(data, arr2));
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86 });
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87 }
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88
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89 [Test]
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90 public void Contains6()
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91 {
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92 var arr = new List<int> { 1, 2 };
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93
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94 ForEachProvider(db => AreEqual(
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95 from p in Parent where arr.Contains(p.ParentID) select p,
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96 from p in db.Parent where arr.Contains(p.ParentID) select p));
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97 }
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98
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99 [Test]
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100 public void Contains7()
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101 {
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102 IEnumerable<int> arr = new[] { 1, 2 };
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103
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104 ForEachProvider(db => AreEqual(
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105 from p in Parent where arr.Contains(p.ParentID) select p,
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106 from p in db.Parent where arr.Contains(p.ParentID) select p));
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107 }
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108
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109 [Test]
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110 public void ContainsKey1()
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111 {
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112 var arr = new Dictionary<int,int>
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113 {
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114 { 1, 1 },
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115 { 2, 2 },
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116 };
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117
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118 ForEachProvider(db => AreEqual(
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119 from p in Parent where arr.Keys.Contains(p.ParentID) select p,
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120 from p in db.Parent where arr.Keys.Contains(p.ParentID) select p));
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121 }
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122
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123 [Test]
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124 public void ContainsKey2()
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125 {
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126 var arr = new Dictionary<int,int>
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127 {
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128 { 1, 1 },
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129 { 2, 2 },
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130 };
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131
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132 ForEachProvider(db => AreEqual(
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133 from p in Parent where arr.ContainsKey(p.ParentID) select p,
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134 from p in db.Parent where arr.ContainsKey(p.ParentID) select p));
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135 }
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136
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137 [Test]
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138 public void ContainsValue1()
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139 {
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140 var arr = new Dictionary<int,int>
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141 {
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142 { 1, 1 },
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143 { 2, 2 },
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144 };
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145
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146 ForEachProvider(db => AreEqual(
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147 from p in Parent where arr.Values.Contains(p.ParentID) select p,
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148 from p in db.Parent where arr.Values.Contains(p.ParentID) select p));
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149 }
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150
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151 [Test]
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152 public void ContainsValue2()
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153 {
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154 var arr = new Dictionary<int,int>
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155 {
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156 { 1, 1 },
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157 { 2, 2 },
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158 };
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159
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160 ForEachProvider(db => AreEqual(
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161 from p in Parent where arr.ContainsValue(p.ParentID) select p,
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162 from p in db.Parent where arr.ContainsValue(p.ParentID) select p));
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163 }
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164
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165 [Test]
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166 public void ContainsHashSet1()
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167 {
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168 var arr = new HashSet<int> { 1, 2 };
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169
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170 ForEachProvider(db => AreEqual(
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171 from p in Parent where arr.Contains(p.ParentID) select p,
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172 from p in db.Parent where arr.Contains(p.ParentID) select p));
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173 }
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174
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175 [Test]
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176 public void EmptyContains1()
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177 {
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178 var expected =
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179 from p in Parent
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180 where new int[0].Contains(p.ParentID) || p.ParentID == 2
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181 select p;
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182
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183 ForEachProvider(db => AreEqual(expected,
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184 from p in db.Parent
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185 where new int[0].Contains(p.ParentID) || p.ParentID == 2
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186 select p));
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187 }
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188
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189 [Test]
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190 public void ContainsString11()
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191 {
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192 var arr = new List<string> { "John" };
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193
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194 ForEachProvider(db => AreEqual(
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195 from p in Person where arr.Contains(p.FirstName) select p,
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196 from p in db.Person where arr.Contains(p.FirstName) select p));
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197 }
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198
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199 [Test]
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200 public void ContainsString12()
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201 {
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202 var nm = "John";
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203
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204 ForEachProvider(db => AreEqual(
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205 from p in Person where new List<string> { nm }.Contains(p.FirstName) select p,
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206 from p in db.Person where new List<string> { nm }.Contains(p.FirstName) select p));
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207 }
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208
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209 [Test]
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210 public void ContainsString13()
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211 {
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212 ForEachProvider(db => AreEqual(
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213 from p in Person where new List<string> { "John" }.Contains(p.FirstName) select p,
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214 from p in db.Person where new List<string> { "John" }.Contains(p.FirstName) select p));
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215 }
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216
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217 [Test]
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218 public void ContainsString21()
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219 {
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220 var arr = new[] { "John" };
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221
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222 ForEachProvider(db => AreEqual(
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223 from p in Person where arr.Contains(p.FirstName) select p,
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224 from p in db.Person where arr.Contains(p.FirstName) select p));
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225 }
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226
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227 [Test]
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228 public void ContainsString22()
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229 {
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230 var nm = "John";
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231
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232 ForEachProvider(db => AreEqual(
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233 from p in Person where new[] { nm }.Contains(p.FirstName) select p,
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234 from p in db.Person where new[] { nm }.Contains(p.FirstName) select p));
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235 }
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236
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237 [Test]
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238 public void ContainsString23()
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239 {
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240 ForEachProvider(db => AreEqual(
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241 from p in Person where new[] { "John" }.Contains(p.FirstName) select p,
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242 from p in db.Person where new[] { "John" }.Contains(p.FirstName) select p));
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243 }
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244
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245 [Test]
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246 public void Equals1()
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247 {
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248 ForEachProvider(db => AreEqual(
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249 from p in Parent where p.ParentID.Equals(2) select p,
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250 from p in db.Parent where p.ParentID.Equals(2) select p));
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251 }
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252
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253 [Test]
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254 public void Equals2()
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255 {
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256 var child = (from ch in Child where ch.ParentID == 2 select ch).First();
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257 var expected = from ch in Child where !ch.Equals(child) select ch;
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258
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259 ForEachProvider(db => AreEqual(expected, from ch in db.Child where !ch.Equals(child) select ch));
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260 }
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261
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262 [Test]
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263 public void Equals3()
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264 {
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265 ForEachProvider(db => AreEqual(
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266 from p in Parent where p.Value1.Equals(null) select p,
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267 from p in db.Parent where p.Value1.Equals(null) select p));
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268 }
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269
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270 [Test]
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271 public void Equals4([IncludeDataContexts("Northwind")] string context)
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272 {
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273 using (var db = new NorthwindDB())
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274 AreEqual(
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275 Customer.Where(c => !c.Address.Equals(null)),
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276 db.Customer.Where(c => !c.Address.Equals(null)));
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277 }
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278
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279 [Test]
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280 public void NewGuid1()
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281 {
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282 ForEachProvider(new[] { ProviderName.DB2, ProviderName.Informix, ProviderName.PostgreSQL, ProviderName.SQLite, ProviderName.Access }, db => AreEqual(
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283 from p in Types where p.GuidValue != Sql.NewGuid() select p.GuidValue,
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284 from p in db.Types where p.GuidValue != Sql.NewGuid() select p.GuidValue));
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285 }
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286
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287 [Test]
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288 public void NewGuid2()
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289 {
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290 ForEachProvider(new[] { ProviderName.DB2, ProviderName.Informix, ProviderName.PostgreSQL, ProviderName.SQLite, ProviderName.Access }, db =>
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291 Assert.AreNotEqual(Guid.Empty, (from p in db.Types select Sql.NewGuid()).First()));
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292 }
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293
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294 [Test]
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295 public void CustomFunc()
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296 {
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297 Expressions.MapMember<Person>(p => p.FullName(), (Expression<Func<Person,string>>)(p => p.LastName + ", " + p.FirstName));
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298
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299 ForEachProvider(db => AreEqual(
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300 from p in Person where p.FullName() == "Pupkin, John" select p.FullName(),
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301 from p in db.Person where p.FullName() == "Pupkin, John" select p.FullName()));
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302 }
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303
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304 [Test]
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305 public void Count1()
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306 {
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307 ForEachProvider(db => Assert.AreEqual(
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308 Child.Count(c => c.ParentID == 1),
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309 db.Child.Count(c => c.ParentID == 1)));
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310 }
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311
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312 [Test]
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313 public void Sum1()
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314 {
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315 ForEachProvider(db => Assert.AreEqual(
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316 Child.Sum(c => c.ParentID),
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317 db.Child.Sum(c => c.ParentID)));
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318 }
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319
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320 [MethodExpression("ChildCountExpression")]
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321 public static int ChildCount(Parent parent)
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322 {
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323 throw new NotSupportedException();
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324 }
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325
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326 static Expression ChildCountExpression()
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327 {
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328 return
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329 (Expression<Func<Parent, int>>)
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330 (p => p.Children.Where(c => c.ParentID > 2).Sum(c => c.ParentID * c.ChildID));
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331 }
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332
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333 [Test]
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334 public void Sum2()
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335 {
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336 ForEachProvider(db => AreEqual(
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337 Parent.Select(p => p.Children.Where(c => c.ParentID > 2).Sum(c => c.ParentID * c.ChildID)),
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338 db.Parent.Select(p => ChildCount(p))));
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339 }
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340 }
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341
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342 public static class PersonExtension
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343 {
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344 static public string FullName(this Person person)
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345 {
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346 return person.LastName + ", " + person.FirstName;
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347 }
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348 }
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349 }
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