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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| 18 | class EZP22958SearchSubtreePathstringFormatTest extends BaseTest |
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| 19 | { |
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| 20 | protected function setUp() |
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| 24 | |||
| 25 | /** |
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| 26 | * Tests that invalid path string provided for subtree criterion result in exception. |
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| 27 | * |
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| 28 | * @dataProvider searchContentQueryWithInvalidDataProvider |
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| 29 | * @expectedException \InvalidArgumentException |
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| 30 | */ |
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| 31 | View Code Duplication | public function testSearchContentSubtreeShouldThrowException($pathString) |
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| 41 | |||
| 42 | /** |
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| 43 | * Tests that path string provided for subtree criterion is valid. |
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| 44 | * |
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| 45 | * @dataProvider searchContentQueryProvider |
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| 46 | */ |
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| 47 | View Code Duplication | public function testSearchContentSubtree($pathString) |
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| 57 | |||
| 58 | View Code Duplication | public function searchContentQueryProvider() |
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| 72 | |||
| 73 | View Code Duplication | public function searchContentQueryWithInvalidDataProvider() |
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| 87 | } |
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| 88 |
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.