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<?php

namespace SMW\Tests;

use SMW\NamespaceExaminer;

/**
 * @covers \SMW\NamespaceExaminer
 * @group semantic-mediawiki
 *
 * @license GNU GPL v2+
 * @since   1.9
 *
 * @author mwjames
 */
class NamespaceExaminerTest extends \PHPUnit_Framework_TestCase {

	use PHPUnitCompat;

	public function testCanConstruct() {

		$this->assertInstanceOf(
			'\SMW\NamespaceExaminer',
			new NamespaceExaminer( [] )
		);

		$this->assertInstanceOf(
			'\SMW\NamespaceExaminer',
			NamespaceExaminer::newFromArray( [] )
		);

		$this->assertInstanceOf(
			'\SMW\NamespaceExaminer',
			NamespaceExaminer::getInstance()
		);
	}

	public function testIsSemanticEnabled() {

		$instance = new NamespaceExaminer( [ NS_MAIN => true ] );

		$this->assertTrue(
			$instance->isSemanticEnabled( NS_MAIN )
		);

		$instance = new NamespaceExaminer( [ NS_MAIN => false ] );

		$this->assertFalse(
			$instance->isSemanticEnabled( NS_MAIN )
		);
	}

	public function testNoNumberNamespaceThrowsException() {

		$instance = new NamespaceExaminer( [ NS_MAIN => true ] );

		$this->setExpectedException( 'InvalidArgumentException' );
		$instance->isSemanticEnabled( 'ichi' );
	}

	/**
	 * Bug 51435; return false instead of an Exception
	 */
	public function testNoValidNamespaceException() {

		$instance = new NamespaceExaminer( [ NS_MAIN => true ] );

		$this->assertFalse(
			$instance->isSemanticEnabled( 99991001 )
		);
	}

	public function testGetInstance() {

		$instance = NamespaceExaminer::getInstance();

		$this->assertSame(
			$instance,
			NamespaceExaminer::getInstance()
		);

		NamespaceExaminer::clear();

		$this->assertNotSame(
			$instance,
			NamespaceExaminer::getInstance()
		);
	}

	public function testNewFromArray() {

		$instance = NamespaceExaminer::newFromArray( [ NS_MAIN => true ] );

		$this->assertTrue(
			$instance->isSemanticEnabled( NS_MAIN )
		);
	}

}