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  | 
            ||
| 9 | abstract class AbstractListTest extends TestCase  | 
            ||
| 10 | { | 
            ||
| 11 | /**  | 
            ||
| 12 | * @test  | 
            ||
| 13 | * @dataProvider getValidParameters  | 
            ||
| 14 | */  | 
            ||
| 15 | public function construct_validConstructorParameters_newListCreatedWithNoExceptions(array $parameters): void  | 
            ||
| 28 | |||
| 29 | /**  | 
            ||
| 30 | * @test  | 
            ||
| 31 | * @dataProvider getInvalidParameters  | 
            ||
| 32 | */  | 
            ||
| 33 | View Code Duplication | public function construct_invalidConstructorParameters_invalidTypeExceptionThrowed(array $parameters): void  | 
            |
| 46 | |||
| 47 | /**  | 
            ||
| 48 | * @test  | 
            ||
| 49 | * @dataProvider getValidParameters  | 
            ||
| 50 | */  | 
            ||
| 51 | public function add_validParameters_noExceptions(array $parameters): void  | 
            ||
| 65 | |||
| 66 | /**  | 
            ||
| 67 | * @test  | 
            ||
| 68 | * @dataProvider getInvalidParameters  | 
            ||
| 69 | */  | 
            ||
| 70 | View Code Duplication | public function add_invalidParameters_noExceptions(array $parameters): void  | 
            |
| 84 | |||
| 85 | /**  | 
            ||
| 86 | * @test  | 
            ||
| 87 | * @dataProvider getValidParameters  | 
            ||
| 88 | */  | 
            ||
| 89 | public function set_validParameters_noExceptions(array $parameters): void  | 
            ||
| 104 | |||
| 105 | /**  | 
            ||
| 106 | * @test  | 
            ||
| 107 | * @dataProvider getInvalidParameters  | 
            ||
| 108 | */  | 
            ||
| 109 | View Code Duplication | public function set_invalidParameters_noExceptions(array $parameters): void  | 
            |
| 123 | |||
| 124 | protected function createList(array $parameters = []): AbstractTypedList  | 
            ||
| 130 | |||
| 131 | abstract protected function getListClassName(): string;  | 
            ||
| 132 | }  | 
            ||
| 133 |