| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | namespace ChadicusTest\Csv; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  | use Chadicus\Csv\Reader; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | use PHPUnit\Framework\TestCase; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * Unit tests for the Chadicus\Csv\Reader class | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * @coversDefaultClass \Chadicus\Csv\Reader | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * @covers ::__construct | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * @covers ::__destruct | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * @covers ::<private> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | final class ReaderTest extends TestCase | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |     private $unreadableFilePath; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |     public function setUp() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |         $this->unreadableFilePath = tempnam(sys_get_temp_dir(), 'csv'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |         touch($this->unreadableFilePath); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |         chmod($this->unreadableFilePath, 0220); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |     public function tearDown() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |         unlink($this->unreadableFilePath); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      * Verify basic usage of Reader. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |      * @covers ::next | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |      * @covers ::current | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |      * @covers ::key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |      * @covers ::valid | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |      * @covers ::rewind | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |      * @dataProvider getReaders() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |      * @param Reader $reader The Reader instance to use in the test. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |     public function basicUsage(Reader $reader) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |         $expected = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |             [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |                 'id' => 'bk101', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |                 'author' => 'Gambardella, Matthew', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |                 'title' => 'XML Developer\'s Guide', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |                 'genre' => 'Computer', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |                 'price' => '44.95', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |                 'publish_date' => '2000-10-01', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |                 'description' => 'An in-depth look at creating applications with XML.', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |             ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |             [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |                 'id' => 'bk102', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |                 'author' => 'Ralls, Kim', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |                 'title' => 'Midnight Rain', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |                 'genre' => 'Fantasy', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |                 'price' => '5.95', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |                 'publish_date' => '2000-12-16', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |                 'description' => 'A former architect battles corporate zombies and an evil sorceress.', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |             ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |             [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |                 'id' => 'bk103', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |                 'author' => 'Corets, Eva', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |                 'title' => 'Maeve Ascendant', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |                 'genre' => 'Fantasy', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |                 'price' => '5.95', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |                 'publish_date' => '2000-11-17', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |                 'description' => 'Young survivors lay the foundation for a new society in England.', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |             ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |         ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |         foreach ($reader as $key => $row) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |             $this->assertSame($expected[$key], $row); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |      * Data provider for basic usage test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |      * @return array | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 87 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 88 |  |  |     public function getReaders() | 
            
                                                                        
                            
            
                                    
            
            
                | 89 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 90 |  |  |         $headers = ['id', 'author', 'title', 'genre', 'price', 'publish_date', 'description']; | 
            
                                                                        
                            
            
                                    
            
            
                | 91 |  |  |         return [ | 
            
                                                                        
                            
            
                                    
            
            
                | 92 |  |  |             [new Reader(__DIR__ . '/_files/basic.csv')], | 
            
                                                                        
                            
            
                                    
            
            
                | 93 |  |  |             [new Reader(__DIR__ . '/_files/basic.csv', $headers)], | 
            
                                                                        
                            
            
                                    
            
            
                | 94 |  |  |             [new Reader(__DIR__ . '/_files/no_headers.csv', $headers)], | 
            
                                                                        
                            
            
                                    
            
            
                | 95 |  |  |             [new Reader(__DIR__ . '/_files/pipe_delimited.txt', $headers, '|')], | 
            
                                                                        
                            
            
                                    
            
            
                | 96 |  |  |             [new Reader(__DIR__ . '/_files/tab_delimited.txt', $headers, "\t")], | 
            
                                                                        
                            
            
                                    
            
            
                | 97 |  |  |         ]; | 
            
                                                                        
                            
            
                                    
            
            
                | 98 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |      * Verify parameter checks for $file in __construct(). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |      * @param mixed $file The file parameter to check. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |      * @covers ::__construct | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |      * @expectedException \InvalidArgumentException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |      * @expectedExceptionMessage $file must be a string containing a full path to a readable delimited file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |      * @dataProvider getFiles | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |     public function constructInvalidFileParam($file) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |         $reader = new Reader($file); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |      * Data provider for constructInvalidFileParam() test. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |      * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |     public function getFiles() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |         return [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |             [__DIR__ . '/_files/not_readable.csv'], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |             [true], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |             [null], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |             [__DIR__ . '/_files/doesnotexist.csv'], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |         ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |      * Verify behavior of __construct with an invalid delimiter. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |      * @covers ::__construct | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |      * @expectedException \InvalidArgumentException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |      * @expectedExceptionMessage $delimiter must be a single character string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |     public function constructInvalidDelimiter() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |         new Reader(__DIR__ . '/_files/basic.csv', null, 'too long'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |      * Verify behavior of __construct with an invalid enclosure. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |      * @covers ::__construct | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |      * @expectedException \InvalidArgumentException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |      * @expectedExceptionMessage $enclosure must be a single character string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |     public function constructInvalidEnclosure() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |         new Reader(__DIR__ . '/_files/basic.csv', null, ',', 123); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |      * Verify behavior of __construct with an invalid escapeChar. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |      * @covers ::__construct | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |      * @expectedException \InvalidArgumentException | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |      * @expectedExceptionMessage $escapeChar must be a single character string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |     public function constructInvalidEscapeChar() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |         new Reader(__DIR__ . '/_files/basic.csv', null, ',', '"', null); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  |      * Verify behaviour of consecutive rewind(). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |      * @covers ::rewind | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  |     public function consecutiveRewind() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  |         $reader = new Reader(__DIR__ . '/_files/basic.csv'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |         $count = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |         foreach ($reader as $row) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |             $count++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |         $reader->rewind(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |         $reader->rewind(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |         $this->assertSame(0, $reader->key()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |      * Verify basic behaviour of current(). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |      * @covers ::current | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |     public function current() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |         $reader = new Reader(__DIR__ . '/_files/basic.csv'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |         $this->assertSame( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |             [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |                 'id' => 'bk101', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |                 'author' => 'Gambardella, Matthew', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |                 'title' => 'XML Developer\'s Guide', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |                 'genre' => 'Computer', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |                 'price' => '44.95', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |                 'publish_date' => '2000-10-01', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |                 'description' => 'An in-depth look at creating applications with XML.', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |             ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |             $reader->current() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |         ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |      * Verify behavior of Reader with an empty file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  |      * @test | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |      * @covers ::next | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  |      * @covers ::current | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |      * @covers ::key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |      * @covers ::valid | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  |      * @covers ::rewind | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  |      * @dataProvider getEmptyFiles | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  |      * @param Reader $reader The reader instance to use in the tests. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  |      * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  |     public function emptyFiles(Reader $reader) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  |         $total = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  |         $reader->rewind(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  |         while ($reader->valid()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  |             $total++; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  |             $reader->next(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  |         $this->assertSame(0, $total); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  |      * Data provider for empty file test. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  |      * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  |     public function getEmptyFiles() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  |         $headers = ['id', 'author', 'title', 'genre', 'price', 'publish_date', 'description']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  |         return [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  |             [new Reader(__DIR__ . '/_files/empty.csv')], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  |             [new Reader(__DIR__ . '/_files/headers_only.csv')], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  |             [new Reader(__DIR__ . '/_files/headers_only.csv', $headers)], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  |         ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 266 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 267 |  |  |  | 
            
                        
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.