HashServiceTest.php

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<?php
namespace TYPO3\CMS\Extbase\Tests\Unit\Security\Cryptography;

class HashServiceTest extends \TYPO3\CMS\Core\Tests\UnitTestCase {

    protected $hashService;

    public function setUp() {
        $this->hashService = new \TYPO3\CMS\Extbase\Security\Cryptography\HashService();
        $GLOBALS['TYPO3_CONF_VARS']['SYS']['encryptionKey'] = 'Testing';
    }

    public function generateHmacReturnsHashStringIfStringIsGiven() {
        $hash = $this->hashService->generateHmac('asdf');
        $this->assertTrue(is_string($hash));
    }

    public function generateHmacReturnsHashStringWhichContainsSomeSalt() {
        $hash = $this->hashService->generateHmac('asdf');
        $this->assertNotEquals(sha1('asdf'), $hash);
    }

    public function generateHmacReturnsDifferentHashStringsForDifferentInputStrings() {
        $hash1 = $this->hashService->generateHmac('asdf');
        $hash2 = $this->hashService->generateHmac('blubb');
        $this->assertNotEquals($hash1, $hash2);
    }

    public function generateHmacThrowsExceptionIfNoStringGiven() {
        $hash = $this->hashService->generateHmac(NULL);
    }

    public function generatedHmacCanBeValidatedAgain() {
        $string = 'asdf';
        $hash = $this->hashService->generateHmac($string);
        $this->assertTrue($this->hashService->validateHmac($string, $hash));
    }

    public function generatedHmacWillNotBeValidatedIfHashHasBeenChanged() {
        $string = 'asdf';
        $hash = 'myhash';
        $this->assertFalse($this->hashService->validateHmac($string, $hash));
    }

    public function appendHmacThrowsExceptionIfNoStringGiven() {
        $this->hashService->appendHmac(NULL);
    }

    public function appendHmacAppendsHmacToGivenString() {
        $string = 'This is some arbitrary string ';
        $hashedString = $this->hashService->appendHmac($string);
        $this->assertSame($string, substr($hashedString, 0, -40));
    }

    public function validateAndStripHmacThrowsExceptionIfNoStringGiven() {
        $this->hashService->validateAndStripHmac(NULL);
    }

    public function validateAndStripHmacThrowsExceptionIfGivenStringIsTooShort() {
        $this->hashService->validateAndStripHmac('string with less than 40 characters');
    }

    public function validateAndStripHmacThrowsExceptionIfGivenStringHasNoHashAppended() {
        $this->hashService->validateAndStripHmac('string with exactly a length 40 of chars');
    }

    public function validateAndStripHmacThrowsExceptionIfTheAppendedHashIsInvalid() {
        $this->hashService->validateAndStripHmac('some Stringac43682075d36592d4cb320e69ff0aa515886eab');
    }

    public function validateAndStripHmacReturnsTheStringWithoutHmac() {
        $string = ' Some arbitrary string with special characters: öäüß!"§$ ';
        $hashedString = $this->hashService->appendHmac($string);
        $actualResult = $this->hashService->validateAndStripHmac($hashedString);
        $this->assertSame($string, $actualResult);
    }
}