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<?php |
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namespace SMW\Tests\SQLStore\QueryEngine; |
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use SMW\SQLStore\QueryEngine\OrderConditionsComplementor; |
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use SMW\SQLStore\QueryEngine\QuerySegment; |
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/** |
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* @covers \SMW\SQLStore\QueryEngine\OrderConditionsComplementor |
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* @group semantic-mediawiki |
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* |
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* @license GNU GPL v2+ |
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* @since 2.5 |
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* |
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* @author mwjames |
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*/ |
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class OrderConditionsComplementorTest extends \PHPUnit_Framework_TestCase { |
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private $querySegmentListBuilder; |
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protected function setUp() { |
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$this->querySegmentListBuilder = $this->getMockBuilder( '\SMW\SQLStore\QueryEngine\QuerySegmentListBuilder' ) |
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->disableOriginalConstructor() |
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->getMock(); |
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} |
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public function testCanConstruct() { |
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$this->assertInstanceOf( |
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'\SMW\SQLStore\QueryEngine\OrderConditionsComplementor', |
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new OrderConditionsComplementor( $this->querySegmentListBuilder ) |
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); |
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} |
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public function testApplyOrderConditionsWithoutSortKey() { |
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$this->querySegmentListBuilder->expects( $this->once() ) |
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->method( 'getQuerySegmentList' ); |
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$instance = new OrderConditionsComplementor( |
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$this->querySegmentListBuilder |
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); |
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$instance->applyOrderConditions( 42 ); |
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} |
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/** |
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* @dataProvider sortKeyProvider |
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*/ |
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public function testApplyOrderConditionsWithSortKey( $sortKeys ) { |
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$querySegment = new QuerySegment(); |
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$this->querySegmentListBuilder->expects( $this->once() ) |
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->method( 'getQuerySegmentList' ); |
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$this->querySegmentListBuilder->expects( $this->atLeastOnce() ) |
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->method( 'findQuerySegment' ) |
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->will( $this->returnValue( $querySegment ) ); |
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$instance = new OrderConditionsComplementor( |
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$this->querySegmentListBuilder |
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); |
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$instance->setSortKeys( $sortKeys ); |
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$instance->applyOrderConditions( 42 ); |
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$querySegment->reset(); |
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} |
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public function testApplyOrderConditionsWithInvalidSortKeyThrowsException() { |
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$querySegment = new QuerySegment(); |
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$this->querySegmentListBuilder->expects( $this->never() ) |
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->method( 'getQuerySegmentList' ); |
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$this->querySegmentListBuilder->expects( $this->atLeastOnce() ) |
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->method( 'findQuerySegment' ) |
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->will( $this->returnValue( $querySegment ) ); |
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$instance = new OrderConditionsComplementor( |
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$this->querySegmentListBuilder |
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); |
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$instance->setSortKeys( array( |
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42 => 'ASC' |
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) |
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); |
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$this->setExpectedException( 'RuntimeException' ); |
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$instance->applyOrderConditions( 42 ); |
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$querySegment->reset(); |
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} |
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public function sortKeyProvider() { |
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$provider[] = array( |
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array( |
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'' => 'ASC' |
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) |
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); |
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$provider[] = array( |
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array( |
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'#' => 'DESC' |
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) |
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); |
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$provider[] = array( |
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array( |
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'Foo' => 'ASC' |
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) |
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); |
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return $provider; |
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} |
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} |
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Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.