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<?php |
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declare( strict_types = 1 ); |
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namespace WMDE\IterableFunction\Tests\Unit; |
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use IteratorAggregate; |
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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 IterableCombineTest extends TestCase { |
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public function testTakesDifferentIterableTypes() { |
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$combinedValues = iterable_merge( |
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[ 1, 2 ], |
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new \ArrayIterator( [ 3, 4 ] ), |
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$this->newGeneratorAggregate( [ 5, 6 ] ) |
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); |
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$this->assertCount( 6, $combinedValues ); |
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} |
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private function newGeneratorAggregate( iterable $values ): \IteratorAggregate { |
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return new class( $values ) implements IteratorAggregate { |
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private $values; |
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public function __construct( iterable $values ) { |
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$this->values = $values; |
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} |
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public function getIterator() { |
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yield from $this->values; |
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} |
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}; |
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} |
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public function testNumericKeysDoNotOverrideEachOther() { |
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$combinedValues = iterable_merge( |
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[ 1, 2 ], |
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[ 3, 4 ] |
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); |
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$this->assertSame( [ 1, 2, 3, 4 ], iterator_to_array( $combinedValues ) ); |
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} |
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public function testStringKeysNotOverrideEachOther() { |
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$combinedValues = iterable_merge( |
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[ 'key' => 1 ], |
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[ 'key' => 2 ], |
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[ 'such' => 3 ] |
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); |
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$this->assertSame( [ 'key' => 2, 'such' => 3 ], iterator_to_array( $combinedValues ) ); |
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} |
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/** |
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* @dataProvider arrayInputsProvider |
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*/ |
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public function testEquivalencyWithArrayMergeAfterIteratorToArray( array ...$arrays ) { |
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$this->assertSame( |
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array_merge( ...$arrays ), |
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iterator_to_array( iterable_merge( ...$arrays ) ) |
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); |
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} |
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public function arrayInputsProvider() { |
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yield 'empty arrays' => [ |
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[], |
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[] |
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]; |
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yield 'numeric indexed arrays' => [ |
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[ 'a', 'b' ], |
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[ 'c', 'd' ] |
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]; |
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yield 'special numeric indexes' => [ |
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[ 10 => 'a', 'b' ], |
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[ 'c', 20 => 'd' ] |
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]; |
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yield 'string indexes mixed with numeric ones' => [ |
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[ 'foo' => 'a', 'b' ], |
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[ 'c', 'bar' => 'd' ] |
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]; |
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yield 'duplicate keys' => [ |
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[ 'foo' => 'a', 'b', 42 => 'x' ], |
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[ 'c', 'foo' => 'd', 42 => 'y' ] |
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]; |
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yield 'one array' => [ |
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[ 'c', 'foo' => 'd', 42 => 'y' ] |
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]; |
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yield 'three arrays' => [ |
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[ 'such' ], |
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[ 'foo' => 'bar' ], |
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[ 42 ] |
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]; |
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} |
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public function testNoArgumentsResultInEmptyGenerator() { |
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$this->assertSame( [], iterator_to_array( iterable_merge() ) ); |
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} |
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} |
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wmde /
iterable-functions
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: