tea/Tests/Functional/Utility/FileUtilityTest.php

<?php
namespace OliverKlee\Tea\Tests\Functional\Utility;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

use org\bovigo\vfs\vfsStream;
use org\bovigo\vfs\vfsStreamDirectory;

/**
 * Test case.
 *
 * @author Oliver Klee <typo3-coding@oliverklee.de>
 */
class FileUtilityTest extends \TYPO3\CMS\Core\Tests\UnitTestCase {
	/**
	 * @var \OliverKlee\Tea\Utility\FileUtility
	 */
	protected $subject = null;

	/**
	 * @var vfsStreamDirectory
	 */
	protected $root = null;

	/** @var string */
	protected $rootDirectoryName = 'home';

	/**
	 * @var string
	 */
	protected $targetFilePath = '';

	protected function setUp() {
		$this->root = vfsStream::setup('home');
		$this->targetFilePath = vfsStream::url('home/target.txt');

		$this->subject = new \OliverKlee\Tea\Utility\FileUtility();
	}

	/**
	 * @test
	 * @expectedException \InvalidArgumentException
	 */
	public function concatenateWithEmptyTargetFileNameThrowsException() {
		$this->subject->concatenate('', array('foo.txt'));
	}

	/**
	 * @test
	 */
	public function concatenateWithNoSourceFilesCreatesEmptyTargetFile() {
		$this->subject->concatenate($this->targetFilePath, array());

		self::assertSame(
			'',
			file_get_contents($this->targetFilePath)
		);
	}

	/**
	 * @test
	 */
	public function concatenateWithOneEmptySourceFileCreatesEmptyTargetFile() {
		// This is one way to create a file with contents, using PHP's file functions.
		$sourceFileName = vfsStream::url('home/source.txt');
		// Just calling vfsStream::url does not create the file yet. We need to write into it to create it.
		file_put_contents($sourceFileName, '');

		$this->subject->concatenate($this->targetFilePath, array($sourceFileName));

		self::assertSame(
			'',
			file_get_contents($this->targetFilePath)
		);
	}

	/**
	 * @test
	 */
	public function concatenateWithOneFileCopiesContentsFromSourceFileToTargetFile() {
		// This is vfsStream's way of creating a file with contents.
		$contents = 'Hello world!';
		$sourceFileName = vfsStream::url('home/source.txt');
		vfsStream::newFile('source.txt')->at($this->root)->setContent($contents);

		$this->subject->concatenate($this->targetFilePath, array($sourceFileName));

		self::assertSame(
			$contents,
			file_get_contents($this->targetFilePath)
		);
	}

	/**
	 * @test
	 */
	public function concatenateWithTWoFileCopiesContentsFromBothFilesInOrderToTargetFile() {
		$contents1 = 'Hello ';
		$sourceFileName1 = vfsStream::url('home/source1.txt');
		file_put_contents($sourceFileName1, $contents1);
		$contents2 = 'world!';
		$sourceFileName2 = vfsStream::url('home/source2.txt');
		file_put_contents($sourceFileName2, $contents2);

		$this->subject->concatenate(
			$this->targetFilePath,
			array($sourceFileName1, $sourceFileName2)
		);

		self::assertSame(
			$contents1 . $contents2,
			file_get_contents($this->targetFilePath)
		);
	}
}