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<?php

/**
 * @group Media
 */
class GIFHandlerTest extends MediaWikiMediaTestCase {

	/** @var GIFHandler */
	protected $handler;

	protected function setUp() {
		parent::setUp();

		$this->handler = new GIFHandler();
	}

	/**
	 * @covers GIFHandler::getMetadata
	 */
	public function testInvalidFile() {
		$res = $this->handler->getMetadata( null, $this->filePath . '/README' );
		$this->assertEquals( GIFHandler::BROKEN_FILE, $res );
	}

	/**
	 * @param string $filename Basename of the file to check
	 * @param bool $expected Expected result.
	 * @dataProvider provideIsAnimated
	 * @covers GIFHandler::isAnimatedImage
	 */
	public function testIsAnimanted( $filename, $expected ) {
		$file = $this->dataFile( $filename, 'image/gif' );
		$actual = $this->handler->isAnimatedImage( $file );
		$this->assertEquals( $expected, $actual );
	}

	public static function provideIsAnimated() {
		return [
			[ 'animated.gif', true ],
			[ 'nonanimated.gif', false ],
		];
	}

	/**
	 * @param string $filename
	 * @param int $expected Total image area
	 * @dataProvider provideGetImageArea
	 * @covers GIFHandler::getImageArea
	 */
	public function testGetImageArea( $filename, $expected ) {
		$file = $this->dataFile( $filename, 'image/gif' );
		$actual = $this->handler->getImageArea( $file, $file->getWidth(), $file->getHeight() );
		$this->assertEquals( $expected, $actual );
	}

	public static function provideGetImageArea() {
		return [
			[ 'animated.gif', 5400 ],
			[ 'nonanimated.gif', 1350 ],
		];
	}

	/**
	 * @param string $metadata Serialized metadata
	 * @param int $expected One of the class constants of GIFHandler
	 * @dataProvider provideIsMetadataValid
	 * @covers GIFHandler::isMetadataValid
	 */
	public function testIsMetadataValid( $metadata, $expected ) {
		$actual = $this->handler->isMetadataValid( null, $metadata );
		$this->assertEquals( $expected, $actual );
	}

	public static function provideIsMetadataValid() {
		// phpcs:disable Generic.Files.LineLength
		return [
			[ GIFHandler::BROKEN_FILE, GIFHandler::METADATA_GOOD ],
			[ '', GIFHandler::METADATA_BAD ],
			[ null, GIFHandler::METADATA_BAD ],
			[ 'Something invalid!', GIFHandler::METADATA_BAD ],
			[
				'a:4:{s:10:"frameCount";i:1;s:6:"looped";b:0;s:8:"duration";d:0.1000000000000000055511151231257827021181583404541015625;s:8:"metadata";a:2:{s:14:"GIFFileComment";a:1:{i:0;s:35:"GIF test file ⁕ Created with GIMP";}s:15:"_MW_GIF_VERSION";i:1;}}',
				GIFHandler::METADATA_GOOD
			],
		];
		// phpcs:enable
	}

	/**
	 * @param string $filename
	 * @param string $expected Serialized array
	 * @dataProvider provideGetMetadata
	 * @covers GIFHandler::getMetadata
	 */
	public function testGetMetadata( $filename, $expected ) {
		$file = $this->dataFile( $filename, 'image/gif' );
		$actual = $this->handler->getMetadata( $file, "$this->filePath/$filename" );
		$this->assertEquals( unserialize( $expected ), unserialize( $actual ) );
	}

	public static function provideGetMetadata() {
		// phpcs:disable Generic.Files.LineLength
		return [
			[
				'nonanimated.gif',
				'a:4:{s:10:"frameCount";i:1;s:6:"looped";b:0;s:8:"duration";d:0.1000000000000000055511151231257827021181583404541015625;s:8:"metadata";a:2:{s:14:"GIFFileComment";a:1:{i:0;s:35:"GIF test file ⁕ Created with GIMP";}s:15:"_MW_GIF_VERSION";i:1;}}'
			],
			[
				'animated-xmp.gif',
				'a:4:{s:10:"frameCount";i:4;s:6:"looped";b:1;s:8:"duration";d:2.399999999999999911182158029987476766109466552734375;s:8:"metadata";a:5:{s:6:"Artist";s:7:"Bawolff";s:16:"ImageDescription";a:2:{s:9:"x-default";s:18:"A file to test GIF";s:5:"_type";s:4:"lang";}s:15:"SublocationDest";s:13:"The interwebs";s:14:"GIFFileComment";a:1:{i:0;s:16:"GIƒ·test·file";}s:15:"_MW_GIF_VERSION";i:1;}}'
			],
		];
		// phpcs:enable
	}

	/**
	 * @param string $filename
	 * @param string $expected Serialized array
	 * @dataProvider provideGetIndependentMetaArray
	 * @covers GIFHandler::getCommonMetaArray
	 */
	public function testGetIndependentMetaArray( $filename, $expected ) {
		$file = $this->dataFile( $filename, 'image/gif' );
		$actual = $this->handler->getCommonMetaArray( $file );
		$this->assertEquals( $expected, $actual );
	}

	public static function provideGetIndependentMetaArray() {
		return [
			[ 'nonanimated.gif', [
				'GIFFileComment' => [
					'GIF test file ⁕ Created with GIMP',
				],
			] ],
			[ 'animated-xmp.gif',
				[
					'Artist' => 'Bawolff',
					'ImageDescription' => [
						'x-default' => 'A file to test GIF',
						'_type' => 'lang',
					],
					'SublocationDest' => 'The interwebs',
					'GIFFileComment' =>
					[
						'GIƒ·test·file',
					],
				]
			],
		];
	}

	/**
	 * @param string $filename
	 * @param float $expectedLength
	 * @dataProvider provideGetLength
	 * @covers GIFHandler::getLength
	 */
	public function testGetLength( $filename, $expectedLength ) {
		$file = $this->dataFile( $filename, 'image/gif' );
		$actualLength = $file->getLength();
		$this->assertEquals( $expectedLength, $actualLength, '', 0.00001 );
	}

	public function provideGetLength() {
		return [
			[ 'animated.gif', 2.4 ],
			[ 'animated-xmp.gif', 2.4 ],
			[ 'nonanimated', 0.0 ],
			[ 'Bishzilla_blink.gif', 1.4 ],
		];
	}
}

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