FileContentsHasherTest.php

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<?php
 
class FileContentsHasherTest extends PHPUnit_Framework_TestCase {
 
    public function provideSingleFile() {
        return array_map( function ( $file ) {
            return [ $file, file_get_contents( $file ) ];
        }, glob( __DIR__ . '/../../data/filecontentshasher/*.*' ) );
    }
 
    public function provideMultipleFiles() {
        return [
            [ $this->provideSingleFile() ]
        ];
    }
 
    public function testSingleFileHash( $fileName, $contents ) {
        foreach ( [ 'md4', 'md5' ] as $algo ) {
            $expectedHash = hash( $algo, $contents );
            $actualHash = FileContentsHasher::getFileContentsHash( $fileName, $algo );
            $this->assertEquals( $expectedHash, $actualHash );
            $actualHashRepeat = FileContentsHasher::getFileContentsHash( $fileName, $algo );
            $this->assertEquals( $expectedHash, $actualHashRepeat );
        }
    }
 
    public function testMultipleFileHash( $files ) {
        $fileNames = [];
        $hashes = [];
        foreach ( $files as $fileInfo ) {
            list( $fileName, $contents ) = $fileInfo;
            $fileNames[] = $fileName;
            $hashes[] = md5( $contents );
        }
 
        $expectedHash = md5( implode( '', $hashes ) );
        $actualHash = FileContentsHasher::getFileContentsHash( $fileNames, 'md5' );
        $this->assertEquals( $expectedHash, $actualHash );
        $actualHashRepeat = FileContentsHasher::getFileContentsHash( $fileNames, 'md5' );
        $this->assertEquals( $expectedHash, $actualHashRepeat );
    }
}