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<?php |
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declare( strict_types = 1 ); |
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namespace WMDE\IterableFunction\Tests; |
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use PHPUnit\Framework\TestCase; |
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/** |
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* @license GNU GPL v2+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class IterableToIteratorTest extends TestCase { |
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/** |
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* @dataProvider arrayProvider |
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*/ |
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public function testGivenArray_itIsReturnedAsIterator( array $array ) { |
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$iterator = iterable_to_iterator( $array ); |
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$this->assertInstanceOf( \Iterator::class, $iterator ); |
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$this->assertSame( $array, iterator_to_array( $iterator ) ); |
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} |
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public function arrayProvider() { |
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return [ |
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[ [] ], |
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[ [ 42 ] ], |
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[ [ null, null, null ] ], |
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[ [ [], (object)[], [], (object)[] ] ], |
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[ [ 'foo' => 100, 'bar' => 200, 'baz' => 300 ] ], |
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[ [ 10 => 'foo', 20 => 'bar', 30 => 'baz' ] ], |
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[ [ 2 => 'foo', 'bar', 3 => 'baz' ] ], |
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]; |
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} |
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/** |
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* @dataProvider iteratorProvider |
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*/ |
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public function testGivenIterable_itIsReturnedAsIs( \Traversable $traversable ) { |
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$this->assertSame( $traversable, iterable_to_iterator( $traversable ) ); |
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} |
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public function iteratorProvider() { |
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return [ |
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'empty iterator' => [ |
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new \ArrayIterator() |
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], |
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'normal iterator' => [ |
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new \ArrayIterator( [ 'a', 'b', 'c' ] ) |
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], |
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'iterator with keys' => [ |
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new \ArrayIterator( [ 'a' => 10, 'b' => 20, 'c' => 30 ] ) |
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], |
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'iterator with some explicit keys' => [ |
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new \ArrayIterator( [ 3 => null, 'a' => 10, 20, 'c' => 30 ] ) |
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], |
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'Generator instance' => [ |
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( function() { |
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yield 'a' => 10; |
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yield 'b' => 20; |
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yield 'c' => 30; |
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} )() |
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] |
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]; |
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} |
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public function testGivenIteratorAggregate_iteratorIsReturned() { |
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$traversable = new class() implements \IteratorAggregate { |
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public function getIterator() { |
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return new \ArrayIterator( [ 'a' => 10, 'b' => 20, 'c' => 30 ] ); |
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} |
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}; |
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$iterator = iterable_to_iterator( $traversable ); |
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$this->assertInstanceOf( \Iterator::class, $iterator ); |
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$this->assertSame( [ 'a' => 10, 'b' => 20, 'c' => 30 ], iterator_to_array( $iterator ) ); |
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} |
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public function testGivenIteratorAggregateWithGenerator_returnedIteratorIsRewindable() { |
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$traversable = new class() implements \IteratorAggregate { |
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public function getIterator() { |
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yield 'a' => 10; |
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yield 'b' => 20; |
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yield 'c' => 30; |
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} |
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}; |
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$iterator = iterable_to_iterator( $traversable ); |
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$this->assertContainsOnly( 'int', $iterator ); |
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$this->assertContainsOnly( 'int', $iterator ); |
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} |
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public function testGivenTraversable_iteratorIsReturned() { |
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$traversable = new \DatePeriod( |
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new \DateTime( '2012-08-01' ), |
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new \DateInterval('P1D'), |
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new \DateTime( '2012-08-05' ) |
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); |
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$iterator = iterable_to_iterator( $traversable ); |
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$this->assertInstanceOf( \Iterator::class, $iterator ); |
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$this->assertCount( 4, $iterator ); |
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} |
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public function testGivenTraversable_returnedIteratorIsRewindable() { |
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$traversable = new \DatePeriod( |
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new \DateTime( '2012-08-01' ), |
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new \DateInterval('P1D'), |
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new \DateTime( '2012-08-05' ) |
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); |
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$iterator = iterable_to_iterator( $traversable ); |
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$this->assertContainsOnlyInstancesOf( \DateTime::class, $iterator ); |
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$this->assertContainsOnlyInstancesOf( \DateTime::class, $iterator ); |
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} |
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} |
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wmde /
iterable-functions
