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Pull Request — develop (#3590)
by Jonathan
63:20
created

testGettingIteratorDoesNotCallFetch()   A

↳ Parent: StatementIteratorTest

Complexity

Conditions 1
Paths 1

Size

Total Lines 9
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
eloc 5
dl 0
loc 9
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 1
1 
<?php
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declare(strict_types=1);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace Doctrine\Tests\DBAL\Driver;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Doctrine\DBAL\Driver\Statement;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Doctrine\DBAL\Driver\StatementIterator;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Doctrine\Tests\DbalTestCase;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use PHPUnit\Framework\MockObject\MockObject;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Traversable;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class StatementIteratorTest extends DbalTestCase

            


            
                                                                                                            
                            
            
                                    
            
            

                
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{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    public function testIteratorIterationCallsFetchOncePerStep() : void

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $stmt = $this->createMock(Statement::class);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $calls = 0;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->configureStatement($stmt, $calls);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $stmtIterator = new StatementIterator($stmt);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        $this->assertIterationCallsFetchOncePerStep($stmtIterator, $calls);

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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    }

            


            
                                                                        
                            
            
                                    
            
            

                
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    private function configureStatement(MockObject $stmt, int &$calls) : void

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        $values = ['foo', '', 'bar', '0', 'baz', 0, 'qux', null, 'quz', false, 'impossible'];

            


            
                                                                        
                            
            
                                    
            
            

                
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        $calls  = 0;

            


            
                                                                        
                            
            
                                    
            
            

                
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        $stmt->expects($this->exactly(10))

            


            
                                                                        
                            
            
                                    
            
            

                
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            ->method('fetch')

            


            
                                                                        
                            
            
                                    
            
            

                
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            ->willReturnCallback(static function () use ($values, &$calls) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                $value = $values[$calls];

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                $calls++;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                return $value;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            });

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    private function assertIterationCallsFetchOncePerStep(Traversable $iterator, int &$calls) : void

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        foreach ($iterator as $i => $_) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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            $this->assertEquals($i + 1, $calls);

            


            
                                                                                                            
                            
            
                                    
            
            

                
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        }

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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