Wikibase\JsonDumpReader\Tests\Unit\Reader\GzDumpReaderTest

Complexity

Total Complexity

6

Size/Duplication

Total Lines	55
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	testGivenInvalidGzPath_exceptionIsThrown()	0	5	1
A	assertFindsEntity()	0	5	1
A	testGivenGzFileWithNoEntities_nullIsReturned()	0	4	1
A	testGivenGzFileWithFiveEntities_fiveEntityAreFound()	0	10	1
A	testRewind()	0	8	1
A	testResumeFromPosition()	0	14	1

<?php

declare( strict_types = 1 );

namespace Wikibase\JsonDumpReader\Tests\Unit\Reader;

use PHPUnit\Framework\TestCase;
use Wikibase\JsonDumpReader\Reader\GzDumpReader;

/**
 * @covers \Wikibase\JsonDumpReader\Reader\GzDumpReader
 *
 * @licence GNU GPL v2+
 * @author Jeroen De Dauw < jeroendedauw@gmail.com >
 */
class GzDumpReaderTest extends TestCase {

	public function testGivenInvalidGzPath_exceptionIsThrown() {
		$this->expectException( 'RuntimeException' );
		$reader = new GzDumpReader( __DIR__ . '/../../data/does-not-exist.json.gz' );
		$reader->nextJsonLine();
	}

	private function assertFindsEntity( GzDumpReader $reader, $expectedId ) {
		$line = $reader->nextJsonLine();
		$this->assertJson( $line );
		$this->assertContains( $expectedId, $line );
	}

	public function testGivenGzFileWithNoEntities_nullIsReturned() {
		$reader = new GzDumpReader( ( new \JsonDumpData() )->getEmptyGzDumpPath() );
		$this->assertNull( $reader->nextJsonLine() );
	}

	public function testGivenGzFileWithFiveEntities_fiveEntityAreFound() {
		$reader = new GzDumpReader( ( new \JsonDumpData() )->getFiveEntitiesGzDumpPath() );

		$this->assertFindsEntity( $reader, 'Q1' );
		$this->assertFindsEntity( $reader, 'Q8' );
		$this->assertFindsEntity( $reader, 'P16' );
		$this->assertFindsEntity( $reader, 'P19' );
		$this->assertFindsEntity( $reader, 'P22' );
		$this->assertNull( $reader->nextJsonLine() );
	}

	public function testRewind() {
		$reader = new GzDumpReader( ( new \JsonDumpData() )->getFiveEntitiesGzDumpPath() );

		$this->assertFindsEntity( $reader, 'Q1' );
		$this->assertFindsEntity( $reader, 'Q8' );
		$reader->rewind();
		$this->assertFindsEntity( $reader, 'Q1' );
	}

	public function testResumeFromPosition() {
		$reader = new GzDumpReader( ( new \JsonDumpData() )->getFiveEntitiesGzDumpPath() );

		$this->assertFindsEntity( $reader, 'Q1' );
		$this->assertFindsEntity( $reader, 'Q8' );

		$position = $reader->getPosition();
		unset( $reader );

		$newReader = new GzDumpReader( ( new \JsonDumpData() )->getFiveEntitiesGzDumpPath() );
		$newReader->seekToPosition( $position );

		$this->assertFindsEntity( $newReader, 'P16' );
	}

}