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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class CollectionTest extends PHPUnit_Framework_TestCase { | 
            
                            
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                    public function testConstruct()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array(1,2,3);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals($arr, $collection->getItems());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testIsEmpty()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(true, $collection->isEmpty());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testUnique()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testCount()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array(1, 2, 3);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(3, $collection->count());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testFirst()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array(4, 5, 6);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(4, $collection->first());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function testLast()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $arr = array(1, 2, 3);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->assertEquals(3, $collection->last());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->assertEquals(null, $collection->last());  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testSum()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array(1, 2, 3);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(6, $collection->sum());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testHas()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array('a' => 1, 'b' => 2, 'c' => 3); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(true, $collection->has('b')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(false, $collection->has('d')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testFilter()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array('a' => 1, 'b' => 2, 'c' => 3); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals(['b' => 2], $collection->filter(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            function ($value, $key) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return ($value % 2) === 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            })  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function testPush()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $arr = array(1, 2, 3);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $collection = new \Suricate\Collection($arr);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->assertEquals([1, 2, 3, 4], $collection->push(4));  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                        
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.