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1 | <?php |
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2 | |||
3 | namespace Diff\Tests\Differ; |
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4 | |||
5 | use Diff\Differ\CallbackListDiffer; |
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6 | use Diff\Differ\Differ; |
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7 | use Diff\DiffOp\DiffOpAdd; |
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8 | use Diff\DiffOp\DiffOpRemove; |
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9 | use Diff\Tests\DiffTestCase; |
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10 | |||
11 | /** |
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12 | * @covers Diff\Differ\CallbackListDiffer |
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13 | * |
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14 | * @group Diff |
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15 | * @group Differ |
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16 | * |
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17 | * @license GPL-2.0+ |
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18 | * @author Jeroen De Dauw < [email protected] > |
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19 | */ |
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20 | class CallbackListDifferTest extends DiffTestCase { |
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21 | |||
22 | /** |
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23 | * Returns those that both work for native and strict mode. |
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24 | */ |
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25 | private function getCommonArgLists() { |
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26 | $argLists = array(); |
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27 | |||
28 | $old = array(); |
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29 | $new = array(); |
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30 | $expected = array(); |
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31 | |||
32 | $argLists[] = array( $old, $new, $expected, |
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33 | 'There should be no difference between empty arrays' ); |
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34 | |||
35 | $old = array( 42 ); |
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36 | $new = array( 42 ); |
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37 | $expected = array(); |
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38 | |||
39 | $argLists[] = array( $old, $new, $expected, |
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40 | 'There should be no difference between arrays with the same element' ); |
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41 | |||
42 | $old = array( 42, 'ohi', 4.2, false ); |
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43 | $new = array( 42, 'ohi', 4.2, false ); |
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44 | $expected = array(); |
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45 | |||
46 | $argLists[] = array( $old, $new, $expected, |
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47 | 'There should be no difference between arrays with the same elements' ); |
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48 | |||
49 | $old = array( 42, 'ohi', 4.2, false ); |
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50 | $new = array( false, 4.2, 'ohi', 42 ); |
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51 | $expected = array(); |
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52 | |||
53 | $argLists[] = array( $old, $new, $expected, |
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54 | 'There should be no difference between arrays with the same elements even when not ordered the same' ); |
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55 | |||
56 | $old = array(); |
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57 | $new = array( 42 ); |
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58 | $expected = array( new DiffOpAdd( 42 ) ); |
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59 | |||
60 | $argLists[] = array( $old, $new, $expected, |
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61 | 'An array with a single element should be an add operation different from an empty array' ); |
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62 | |||
63 | $old = array( 42 ); |
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64 | $new = array(); |
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65 | $expected = array( new DiffOpRemove( 42 ) ); |
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66 | |||
67 | $argLists[] = array( $old, $new, $expected, |
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68 | 'An empty array should be a remove operation different from an array with one element' ); |
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69 | |||
70 | $old = array( 1 ); |
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71 | $new = array( 2 ); |
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72 | $expected = array( new DiffOpRemove( 1 ), new DiffOpAdd( 2 ) ); |
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73 | |||
74 | $argLists[] = array( $old, $new, $expected, |
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75 | 'Two arrays with a single different element should differ by an add and a remove op' ); |
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76 | |||
77 | $old = array( 9001, 42, 1, 0 ); |
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78 | $new = array( 9001, 2, 0, 42 ); |
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79 | $expected = array( new DiffOpRemove( 1 ), new DiffOpAdd( 2 ) ); |
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80 | |||
81 | $argLists[] = array( |
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82 | $old, |
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83 | $new, |
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84 | $expected, |
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85 | 'Two arrays with a single different element should differ by an add ' |
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86 | . 'and a remove op even when they share identical elements' |
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87 | ); |
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88 | |||
89 | return $argLists; |
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90 | } |
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91 | |||
92 | public function toDiffProvider() { |
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93 | $argLists = $this->getCommonArgLists(); |
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94 | |||
95 | $old = array( 42, 42 ); |
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96 | $new = array( 42 ); |
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97 | $expected = array( new DiffOpRemove( 42 ) ); |
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98 | |||
99 | $argLists[] = array( $old, $new, $expected, |
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100 | '[42, 42] to [42] should [rem(42)]' ); |
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101 | |||
102 | $old = array( 42 ); |
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103 | $new = array( 42, 42 ); |
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104 | $expected = array( new DiffOpAdd( 42 ) ); |
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105 | |||
106 | $argLists[] = array( $old, $new, $expected, |
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107 | '[42] to [42, 42] should [add(42)]' ); |
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108 | |||
109 | $old = array( '42' ); |
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110 | $new = array( 42 ); |
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111 | $expected = array( new DiffOpRemove( '42' ), new DiffOpAdd( 42 ) ); |
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112 | |||
113 | $argLists[] = array( $old, $new, $expected, |
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114 | '["42"] to [42] should [rem("42"), add(42)]' ); |
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115 | |||
116 | $old = array( array( 1 ) ); |
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117 | $new = array( array( 2 ) ); |
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118 | $expected = array( new DiffOpRemove( array( 1 ) ), new DiffOpAdd( array( 2 ) ) ); |
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119 | |||
120 | $argLists[] = array( $old, $new, $expected, |
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121 | '[[1]] to [[2]] should [rem([1]), add([2])]' ); |
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122 | |||
123 | $old = array( array( 2 ) ); |
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124 | $new = array( array( 2 ) ); |
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125 | $expected = array(); |
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126 | |||
127 | $argLists[] = array( $old, $new, $expected, |
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128 | '[[2]] to [[2]] should result in an empty diff' ); |
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129 | |||
130 | // test "soft" object comparison |
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131 | $obj1 = new \stdClass(); |
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132 | $obj2 = new \stdClass(); |
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133 | $objX = new \stdClass(); |
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134 | |||
135 | $obj1->test = 'Test'; |
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136 | $obj2->test = 'Test'; |
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137 | $objX->xest = 'Test'; |
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138 | |||
139 | $old = array( $obj1 ); |
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140 | $new = array( $obj2 ); |
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141 | $expected = array( ); |
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142 | |||
143 | $argLists[] = array( $old, $new, $expected, |
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144 | 'Two arrays containing equivalent objects should result in an empty diff' ); |
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145 | |||
146 | $old = array( $obj1 ); |
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147 | $new = array( $objX ); |
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148 | $expected = array( new DiffOpRemove( $obj1 ), new DiffOpAdd( $objX ) ); |
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149 | |||
150 | $argLists[] = array( $old, $new, $expected, |
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151 | 'Two arrays containing different objects of the same type should result in an add and a remove op.' ); |
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152 | |||
153 | return $argLists; |
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154 | } |
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155 | |||
156 | /** |
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157 | * @dataProvider toDiffProvider |
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158 | */ |
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159 | public function testDoDiff( $old, $new, $expected, $message = '' ) { |
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160 | $callback = function( $foo, $bar ) { |
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161 | return is_object( $foo ) ? $foo == $bar : $foo === $bar; |
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162 | }; |
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163 | |||
164 | $this->doTestDiff( new CallbackListDiffer( $callback ), $old, $new, $expected, $message ); |
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165 | } |
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166 | |||
167 | private function doTestDiff( Differ $differ, $old, $new, $expected, $message ) { |
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168 | $actual = $differ->doDiff( $old, $new ); |
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169 | |||
170 | $this->assertArrayEquals( $expected, $actual, false, false, $message ); |
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171 | } |
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172 | |||
173 | public function testCallbackComparisonReturningFalse() { |
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174 | $differ = new CallbackListDiffer( function( $foo, $bar ) { |
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0 ignored issues
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show
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175 | return false; |
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176 | } ); |
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177 | |||
178 | $actual = $differ->doDiff( array( 1, '2' ), array( 1, '2', 'foo' ) ); |
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179 | |||
180 | $expected = array( |
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181 | new DiffOpAdd( 1 ), |
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182 | new DiffOpAdd( '2' ), |
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183 | new DiffOpAdd( 'foo' ), |
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184 | new DiffOpRemove( 1 ), |
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185 | new DiffOpRemove( '2' ), |
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186 | ); |
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187 | |||
188 | $this->assertArrayEquals( |
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189 | $expected, $actual, false, false, |
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190 | 'All elements should be removed and added when comparison callback always returns false' |
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191 | ); |
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192 | } |
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193 | |||
194 | public function testCallbackComparisonReturningTrue() { |
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195 | $differ = new CallbackListDiffer( function( $foo, $bar ) { |
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0 ignored issues
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196 | return true; |
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197 | } ); |
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198 | |||
199 | $actual = $differ->doDiff( array( 1, '2', 'baz' ), array( 1, 'foo', '2' ) ); |
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200 | |||
201 | $expected = array(); |
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202 | |||
203 | $this->assertArrayEquals( |
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204 | $expected, $actual, false, false, |
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205 | 'No elements should be removed or added when comparison callback always returns true' |
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206 | ); |
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207 | } |
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208 | |||
209 | public function testCallbackComparisonReturningNyanCat() { |
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210 | $differ = new CallbackListDiffer( function( $foo, $bar ) { |
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0 ignored issues
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211 | return '~=[,,_,,]:3'; |
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212 | } ); |
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213 | |||
214 | $this->setExpectedException( 'RuntimeException' ); |
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215 | |||
216 | $differ->doDiff( array( 1, '2', 'baz' ), array( 1, 'foo', '2' ) ); |
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217 | } |
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218 | |||
219 | } |
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220 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.