Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php  | 
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| 16 | class NonStaticMagicMethodsSniffTest extends BaseSniffTest  | 
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| 17 | { | 
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| 18 | /**  | 
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| 19 | * Whether or not traits will be recognized in PHPCS.  | 
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| 20 | *  | 
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| 21 | * @var bool  | 
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| 22 | */  | 
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| 23 | protected static $recognizesTraits = true;  | 
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| 24 | |||
| 25 | |||
| 26 | /**  | 
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| 27 | * Set up skip condition.  | 
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| 28 | */  | 
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| 29 | public static function setUpBeforeClass()  | 
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| 36 | |||
| 37 | |||
| 38 | /**  | 
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| 39 | * Get the correct test file.  | 
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| 40 | *  | 
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| 41 | * (@internal  | 
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| 42 | * The test file has been split into two:  | 
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| 43 | * - one covering classes and interfaces  | 
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| 44 | * - one covering traits  | 
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| 45 | *  | 
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| 46 | * This is to avoid test failing because PHPCS 1.x gets confused about the scope  | 
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| 47 | * openers/closers when run on PHP 5.3 or lower.  | 
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| 48 | * In a 'normal' situation you won't often find classes, interfaces and traits all  | 
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| 49 | * mixed in one file anyway, so this issue for which this is a work-around,  | 
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| 50 | * should not cause real world issues anyway.}}  | 
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| 51 | *  | 
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| 52 | * @param bool $isTrait Whether to load the class/interface test file or the trait test file.  | 
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| 53 | *  | 
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| 54 | * @return PHP_CodeSniffer_File File object|false  | 
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| 55 | */  | 
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| 56 |     protected function getTestFile($isTrait) { | 
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| 64 | |||
| 65 | /**  | 
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| 66 | * testCorrectImplementation  | 
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| 67 | *  | 
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| 68 | * @group MagicMethods  | 
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| 69 | *  | 
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| 70 | * @dataProvider dataCorrectImplementation  | 
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| 71 | *  | 
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| 72 | * @param int $line The line number.  | 
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| 73 | *  | 
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| 74 | * @return void  | 
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| 75 | */  | 
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| 76 | public function testCorrectImplementation($line, $isTrait = false)  | 
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| 86 | |||
| 87 | /**  | 
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| 88 | * Data provider.  | 
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| 89 | *  | 
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| 90 | * @see testCorrectImplementation()  | 
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| 91 | *  | 
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| 92 | * @return array  | 
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| 93 | */  | 
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| 94 | public function dataCorrectImplementation()  | 
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| 174 | |||
| 175 | |||
| 176 | /**  | 
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| 177 | * testWrongMethodVisibility  | 
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| 178 | *  | 
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| 179 | * @group MagicMethods  | 
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| 180 | *  | 
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| 181 | * @dataProvider dataWrongMethodVisibility  | 
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| 182 | *  | 
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| 183 | * @param string $methodName Method name.  | 
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| 184 | * @param string $desiredVisibility The visibility the method should have.  | 
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| 185 | * @param string $testVisibility The visibility the method actually has in the test.  | 
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| 186 | * @param int $line The line number.  | 
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| 187 | * @param bool $isTrait Whether the test relates to method in a trait.  | 
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| 188 | *  | 
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| 189 | *  | 
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| 190 | * @return void  | 
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| 191 | */  | 
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| 192 | View Code Duplication | public function testWrongMethodVisibility($methodName, $desiredVisibility, $testVisibility, $line, $isTrait = false)  | 
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| 202 | |||
| 203 | /**  | 
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| 204 | * Data provider.  | 
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| 205 | *  | 
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| 206 | * @see testWrongMethodVisibility()  | 
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| 207 | *  | 
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| 208 | * @return array  | 
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| 209 | */  | 
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| 210 | public function dataWrongMethodVisibility()  | 
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| 256 | |||
| 257 | |||
| 258 | /**  | 
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| 259 | * testWrongStaticMethod  | 
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| 260 | *  | 
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| 261 | * @group MagicMethods  | 
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| 262 | *  | 
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| 263 | * @dataProvider dataWrongStaticMethod  | 
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| 264 | *  | 
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| 265 | * @param string $methodName Method name.  | 
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| 266 | * @param int $line The line number.  | 
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| 267 | * @param bool $isTrait Whether the test relates to a method in a trait.  | 
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| 268 | *  | 
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| 269 | * @return void  | 
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| 270 | */  | 
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| 271 | View Code Duplication | public function testWrongStaticMethod($methodName, $line, $isTrait = false)  | 
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| 281 | |||
| 282 | /**  | 
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| 283 | * Data provider.  | 
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| 284 | *  | 
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| 285 | * @see testWrongStaticMethod()  | 
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| 286 | *  | 
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| 287 | * @return array  | 
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| 288 | */  | 
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| 289 | public function dataWrongStaticMethod()  | 
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| 327 | |||
| 328 | |||
| 329 | /**  | 
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| 330 | * testWrongNonStaticMethod  | 
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| 331 | *  | 
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| 332 | * @group MagicMethods  | 
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| 333 | *  | 
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| 334 | * @dataProvider dataWrongNonStaticMethod  | 
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| 335 | *  | 
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| 336 | * @param string $methodName Method name.  | 
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| 337 | * @param int $line The line number.  | 
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| 338 | * @param bool $isTrait Whether the test relates to a method in a trait.  | 
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| 339 | *  | 
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| 340 | * @return void  | 
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| 341 | */  | 
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| 342 | View Code Duplication | public function testWrongNonStaticMethod($methodName, $line, $isTrait = false)  | 
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| 352 | |||
| 353 | /**  | 
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| 354 | * Data provider.  | 
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| 355 | *  | 
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| 356 | * @see testWrongNonStaticMethod()  | 
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| 357 | *  | 
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| 358 | * @return array  | 
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| 359 | */  | 
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| 360 | public function dataWrongNonStaticMethod()  | 
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| 383 | |||
| 384 | }  | 
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| 385 | 
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.