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CachingIteratorTest::testMainFunctionality()   A
last analyzed

↳ Parent: CachingIteratorTest

Complexity

Conditions 1
Paths 1

Size

Total Lines 22

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 22
rs 9.568
c 0
b 0
f 0
cc 1
nc 1
nop 0
1 
<?php
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namespace itertools;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use ArrayIterator;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use CallbackFilterIterator;

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
0 ignored issues

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This use statement conflicts with another class in this namespace, itertools\CallbackFilterIterator.
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s assume that you have a directory layout like this:


.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php





and let’s assume the following content of Bar.php:


// Bar.php
namespace OtherDir;

use SomeDir\Foo; // This now conflicts the class OtherDir\Foo





If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the
same runtime, you will see a PHP error such as the following:


PHP Fatal error:  Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php





However, as OtherDir/Foo.php does not necessarily have to be loaded and the
error is only triggered if it is loaded before OtherDir/Bar.php, this problem
might go unnoticed for a while. In order to prevent this error from surfacing,
you must import the namespace with a different alias:


// Bar.php
namespace OtherDir;

use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore.





                        

                                                    

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use EmptyIterator;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use PHPUnit_Framework_TestCase;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class CachingIteratorTest extends PHPUnit_Framework_TestCase {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	/** @test */

            


            
                                                                        
                            
            
                                    
            
            

                
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	public function testMainFunctionality()

            


            
                                                                        
                            
            
                                    
            
            

                
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	{

            


            
                                                                        
                            
            
                                    
            
            

                
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		$count = 0;

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it = new CachingIterator(new MapIterator(new ArrayIterator(range(0, 10)), function($i) use (&$count) { $count += 1; return $i; }));

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it->rewind();

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(0, $count);

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it->valid();

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(0, $it->current());

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it->valid();

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it->next();

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(1, $it->current());

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(1, $it->current());

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(1, $it->current());

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it->valid();

            


            
                                                                        
                            
            
                                    
            
            

                
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		$it->next();

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(2, $it->current());

            


            
                                                                        
                            
            
                                    
            
            

                
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		$this->assertEquals(3, $count);

            


            
                                                                        
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	/** @test */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public function testValidMethod()

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	{

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		foreach(new CachingIterator(new EmptyIterator()) as $v) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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			$this->assertTrue(false, 'should not be here');

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	/** @test */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public function testHasNext() {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		$it = new CachingIterator(range(1, 5));

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		$this->assertTrue($it->hasNext());

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		$it = new CachingIterator(new EmptyIterator());

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		$this->assertFalse($it->hasNext());

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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}

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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