FileEncrypterTest::testDecrypt() - Code Metrics - Inspection of "Merge tag '0.1.5' into develop" - wubbajack/filecrypt - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Christoper

created 2016-01-03 21:43 UTC

FileEncrypterTest::testDecrypt() B

↳ Parent: Project

Complexity

Conditions	4
Paths	64

Size

Total Lines	69
Code Lines	45

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	2

Metric	Value
c	2
b	0
f	2
dl	0
loc	69
rs	8.7654
cc	4
eloc	45
nc	64
nop	0

How to fix Long Method

<?php namespace Wubbajack\Tests;

use TypeError;
use Wubbajack\Encryption\EncryptedFile;
use Wubbajack\Encryption\Exceptions\DecryptException;
use Wubbajack\Encryption\Exceptions\EncryptException;
use Wubbajack\Encryption\FileEncrypter;

class FileEncrypterTest extends \PHPUnit_Framework_TestCase
{

    /**
     * @var FileEncrypter
     */
    protected $fileCrypt;

    /**
     * @var string
     */
    protected $default_key = '2ApWknyPwb4N8Hhv4zT34FvubrCTx0Sh';

    /**
     * @var string
     */
    protected $default_cipher = MCRYPT_RIJNDAEL_128;

    /**
     * @var string
     */
    protected $default_mode = MCRYPT_MODE_CBC;

    /**
     * @var string
     */
    protected $test_file;

    /**
     * @var string
     */
    protected $test_encrypted_file;

    /**
     * @var string
     */
    protected $test_decrypted_file;

    /**
     * Sets up the file encrypter
     */
    protected function setUp()
    {
        $this->fileCrypt = new FileEncrypter($this->default_key);
        $this->test_file = $this->createTestFile();
        $this->test_encrypted_file = __DIR__ .'/test.enc';
        $this->test_decrypted_file = __DIR__ .'/test.dec.json';
    }

    protected function tearDown()
    {
        $this->fileCrypt->setMode($this->default_mode);
        $this->fileCrypt->setCipher($this->default_cipher);
        $this->fileCrypt->setKey($this->default_key);

        $this->cleanupFiles();
    }

    /**
     * Tests whether the cipher is properly set and the block size is updated correctly
     */
    public function testSetCipher()
    {
        $cipher = MCRYPT_TRIPLEDES;
        $this->fileCrypt->setCipher($cipher);

        $this->assertEquals($cipher, $this->readAttribute($this->fileCrypt, 'cipher'));

        $block_size = mcrypt_get_block_size($cipher, $this->readAttribute($this->fileCrypt, 'mode'));
        $this->assertEquals($block_size, $this->readAttribute($this->fileCrypt, 'block'));
    }

    /**
     * Tests whether the mode is set correctly and and the block size is updated accordingly
     */
    public function testSetMode()
    {
        $mode = MCRYPT_MODE_OFB;
        $this->fileCrypt->setMode($mode);

        $this->assertEquals($mode, $this->readAttribute($this->fileCrypt, 'mode'));

        $block_size = mcrypt_get_block_size($this->readAttribute($this->fileCrypt, 'cipher'), $mode);
        $this->assertEquals($block_size, $this->readAttribute($this->fileCrypt, 'block'));
    }

    /**
     * Tests the setting of the key
     */
    public function testSetKey()
    {
        $key = bin2hex(openssl_random_pseudo_bytes(16));
        $this->fileCrypt->setKey($key);

        $this->assertEquals($key, $this->readAttribute($this->fileCrypt, 'key'));
    }

    /**
     * Test encryption
     *
     * @throws \Wubbajack\Encryption\Exceptions\EncryptException
     */
    public function testEncrypt()
    {
        $this->assertInstanceOf(
            EncryptedFile::class,
            $this->fileCrypt->encrypt($this->test_file, $this->test_encrypted_file)
        );

        // Try testing with a non-existent source file
        $this->setExpectedException(EncryptException::class);
        $this->fileCrypt->encrypt(__DIR__ .'/test.test', __DIR__ .'/test.test.enc');
    }

    /**
     * Test decryption
     */
    public function testDecrypt()
    {
        $encryptedFile = $this->fileCrypt->encrypt($this->test_file, $this->test_encrypted_file);

        $this->fileCrypt->decrypt($encryptedFile, $this->test_decrypted_file);

        // Test if the decrypted file exists
        $this->assertTrue(file_exists($this->test_decrypted_file));

        // Test if the checksum equals the original file
        $this->assertEquals($encryptedFile->getChecksum(), sha1_file($this->test_decrypted_file));

        // Test if the decrypted file contains the same content as the original
        $this->assertEquals(file_get_contents($this->test_file), file_get_contents($this->test_decrypted_file));

        // Test decryption of encrypted file with incorrect wrong IV
        try {
            $invalidEncryptedFile = EncryptedFile::create(
                '2394qsf3-f9',
                $encryptedFile->getChecksum(),
                $encryptedFile->getPadding(),
                $encryptedFile->getFile()->getRealPath()
            );
            $this->fileCrypt->decrypt($invalidEncryptedFile, $this->test_decrypted_file);
            $this->fail('No exception was thrown on decrypting with an incorrect IV');
        } catch (\Exception $e) {
            $this->assertInstanceOf(
                DecryptException::class,
                $e,
                'Expected an instance of DecryptException containing a message about IV, got '. get_class($e)
            );
        }

        // Test decryption of encrypted file with incorrect checksum
        try {
            $invalidEncryptedFile = EncryptedFile::create(
                $encryptedFile->getIV(),
                bin2hex(openssl_random_pseudo_bytes(16)),
                $encryptedFile->getPadding(),
                $encryptedFile->getFile()->getRealPath()
            );
            $this->fileCrypt->decrypt($invalidEncryptedFile, $this->test_decrypted_file);
            $this->fail('No exception was thrown on decrypting with unmatching checksums');
        } catch (\Exception $e) {
            $this->assertInstanceOf(
                DecryptException::class,
                $e,
                'Expected an instance of DecryptException with a message about the checksum, got '. get_class($e)
            );
        }

        // Test decryption of encrypted file with twice the amount of padding
        try {
            $invalidEncryptedFile = EncryptedFile::create(
                $encryptedFile->getIV(),
                $encryptedFile->getChecksum(),
                $encryptedFile->getPadding() * 2,
                $encryptedFile->getFile()->getRealPath()
            );
            $this->fileCrypt->decrypt($invalidEncryptedFile, $this->test_decrypted_file);
            $this->fail('No exception was thrown on decrypting with too much padding');
        } catch (\Exception $e) {
            $this->assertInstanceOf(
                DecryptException::class,
                $e,
                'Expected an instance of DecryptException with a message about the checksum, got '. get_class($e)
            );
        }
    }

    /**
     * Test streaming decryption
     */
    public function testStreamDecrypt()
    {
        $encryptedFile = $this->fileCrypt->encrypt($this->test_file, $this->test_encrypted_file);

        // Test whether the checksum of the decrypted data equals the checksum of the file
        $decrypted_data = '';
        $this->fileCrypt->streamDecrypt(
            $encryptedFile,
            function ($data, $stream) use (&$decrypted_data, $encryptedFile) {
                if (feof($stream)) {
                    $data = substr($data, 0, -$encryptedFile->getPadding());
                }

                $decrypted_data .= $data;
            }
        );

        $this->assertEquals(sha1($decrypted_data), $encryptedFile->getChecksum());
    }

    /**
     * Removes all of the created encrypted and decrypted files created during testing
     */
    protected function cleanupFiles()
    {
        if (is_file($this->test_file)) {
            unlink($this->test_file);
        }

        if (is_file($this->test_encrypted_file)) {
            unlink($this->test_encrypted_file);
        }

        if (is_file($this->test_decrypted_file)) {
            unlink($this->test_decrypted_file);
        }
    }

    /**
     * Creates a test file
     *
     * @return string
     */
    protected function createTestFile()
    {
        $file = __DIR__ .'/test.json';

        file_put_contents($file, json_encode(['unit' => 'test']));
        return $file;
    }
}


1			<?php namespace Wubbajack\Tests;
2
3			use TypeError;
4			use Wubbajack\Encryption\EncryptedFile;
5			use Wubbajack\Encryption\Exceptions\DecryptException;
6			use Wubbajack\Encryption\Exceptions\EncryptException;
7			use Wubbajack\Encryption\FileEncrypter;
8
9			class FileEncrypterTest extends \PHPUnit_Framework_TestCase
10			{
11
12			/**
13			* @var FileEncrypter
14			*/
15			protected $fileCrypt;
16
17			/**
18			* @var string
19			*/
20			protected $default_key = '2ApWknyPwb4N8Hhv4zT34FvubrCTx0Sh';
21
22			/**
23			* @var string
24			*/
25			protected $default_cipher = MCRYPT_RIJNDAEL_128;
26
27			/**
28			* @var string
29			*/
30			protected $default_mode = MCRYPT_MODE_CBC;
31
32			/**
33			* @var string
34			*/
35			protected $test_file;
36
37			/**
38			* @var string
39			*/
40			protected $test_encrypted_file;
41
42			/**
43			* @var string
44			*/
45			protected $test_decrypted_file;
46
47			/**
48			* Sets up the file encrypter
49			*/
50			protected function setUp()
51			{
52			$this->fileCrypt = new FileEncrypter($this->default_key);
53			$this->test_file = $this->createTestFile();
54			$this->test_encrypted_file = __DIR__ .'/test.enc';
55			$this->test_decrypted_file = __DIR__ .'/test.dec.json';
56			}
57
58			protected function tearDown()
59			{
60			$this->fileCrypt->setMode($this->default_mode);
61			$this->fileCrypt->setCipher($this->default_cipher);
62			$this->fileCrypt->setKey($this->default_key);
63
64			$this->cleanupFiles();
65			}
66
67			/**
68			* Tests whether the cipher is properly set and the block size is updated correctly
69			*/
70			public function testSetCipher()
71			{
72			$cipher = MCRYPT_TRIPLEDES;
73			$this->fileCrypt->setCipher($cipher);
74
75			$this->assertEquals($cipher, $this->readAttribute($this->fileCrypt, 'cipher'));
76
77			$block_size = mcrypt_get_block_size($cipher, $this->readAttribute($this->fileCrypt, 'mode'));
78			$this->assertEquals($block_size, $this->readAttribute($this->fileCrypt, 'block'));
79			}
80
81			/**
82			* Tests whether the mode is set correctly and and the block size is updated accordingly
83			*/
84			public function testSetMode()
85			{
86			$mode = MCRYPT_MODE_OFB;
87			$this->fileCrypt->setMode($mode);
88
89			$this->assertEquals($mode, $this->readAttribute($this->fileCrypt, 'mode'));
90
91			$block_size = mcrypt_get_block_size($this->readAttribute($this->fileCrypt, 'cipher'), $mode);
92			$this->assertEquals($block_size, $this->readAttribute($this->fileCrypt, 'block'));
93			}
94
95			/**
96			* Tests the setting of the key
97			*/
98			public function testSetKey()
99			{
100			$key = bin2hex(openssl_random_pseudo_bytes(16));
101			$this->fileCrypt->setKey($key);
102
103			$this->assertEquals($key, $this->readAttribute($this->fileCrypt, 'key'));
104			}
105
106			/**
107			* Test encryption
108			*
109			* @throws \Wubbajack\Encryption\Exceptions\EncryptException
110			*/
111			public function testEncrypt()
112			{
113			$this->assertInstanceOf(
114			EncryptedFile::class,
115			$this->fileCrypt->encrypt($this->test_file, $this->test_encrypted_file)
116			);
117
118			// Try testing with a non-existent source file
119			$this->setExpectedException(EncryptException::class);
120			$this->fileCrypt->encrypt(__DIR__ .'/test.test', __DIR__ .'/test.test.enc');
121			}
122
123			/**
124			* Test decryption
125			*/
126			public function testDecrypt()
127			{
128			$encryptedFile = $this->fileCrypt->encrypt($this->test_file, $this->test_encrypted_file);
129
130			$this->fileCrypt->decrypt($encryptedFile, $this->test_decrypted_file);
131
132			// Test if the decrypted file exists
133			$this->assertTrue(file_exists($this->test_decrypted_file));
134
135			// Test if the checksum equals the original file
136			$this->assertEquals($encryptedFile->getChecksum(), sha1_file($this->test_decrypted_file));
137
138			// Test if the decrypted file contains the same content as the original
139			$this->assertEquals(file_get_contents($this->test_file), file_get_contents($this->test_decrypted_file));
140
141			// Test decryption of encrypted file with incorrect wrong IV
142			try {
143			$invalidEncryptedFile = EncryptedFile::create(
144			'2394qsf3-f9',
145			$encryptedFile->getChecksum(),
146			$encryptedFile->getPadding(),
147			$encryptedFile->getFile()->getRealPath()
148			);
149			$this->fileCrypt->decrypt($invalidEncryptedFile, $this->test_decrypted_file);
150			$this->fail('No exception was thrown on decrypting with an incorrect IV');
151			} catch (\Exception $e) {
152			$this->assertInstanceOf(
153			DecryptException::class,
154			$e,
155			'Expected an instance of DecryptException containing a message about IV, got '. get_class($e)
156			);
157			}
158
159			// Test decryption of encrypted file with incorrect checksum
160			try {
161			$invalidEncryptedFile = EncryptedFile::create(
162			$encryptedFile->getIV(),
163			bin2hex(openssl_random_pseudo_bytes(16)),
164			$encryptedFile->getPadding(),
165			$encryptedFile->getFile()->getRealPath()
166			);
167			$this->fileCrypt->decrypt($invalidEncryptedFile, $this->test_decrypted_file);
168			$this->fail('No exception was thrown on decrypting with unmatching checksums');
169			} catch (\Exception $e) {
170			$this->assertInstanceOf(
171			DecryptException::class,
172			$e,
173			'Expected an instance of DecryptException with a message about the checksum, got '. get_class($e)
174			);
175			}
176
177			// Test decryption of encrypted file with twice the amount of padding
178			try {
179			$invalidEncryptedFile = EncryptedFile::create(
180			$encryptedFile->getIV(),
181			$encryptedFile->getChecksum(),
182			$encryptedFile->getPadding() * 2,
183			$encryptedFile->getFile()->getRealPath()
184			);
185			$this->fileCrypt->decrypt($invalidEncryptedFile, $this->test_decrypted_file);
186			$this->fail('No exception was thrown on decrypting with too much padding');
187			} catch (\Exception $e) {
188			$this->assertInstanceOf(
189			DecryptException::class,
190			$e,
191			'Expected an instance of DecryptException with a message about the checksum, got '. get_class($e)
192			);
193			}
194			}
195
196			/**
197			* Test streaming decryption
198			*/
199			public function testStreamDecrypt()
200			{
201			$encryptedFile = $this->fileCrypt->encrypt($this->test_file, $this->test_encrypted_file);
202
203			// Test whether the checksum of the decrypted data equals the checksum of the file
204			$decrypted_data = '';
205			$this->fileCrypt->streamDecrypt(
206			$encryptedFile,
207			function ($data, $stream) use (&$decrypted_data, $encryptedFile) {
208			if (feof($stream)) {
209			$data = substr($data, 0, -$encryptedFile->getPadding());
210			}
211
212			$decrypted_data .= $data;
213			}
214			);
215
216			$this->assertEquals(sha1($decrypted_data), $encryptedFile->getChecksum());
217			}
218
219			/**
220			* Removes all of the created encrypted and decrypted files created during testing
221			*/
222			protected function cleanupFiles()
223			{
224			if (is_file($this->test_file)) {
225			unlink($this->test_file);
226			}
227
228			if (is_file($this->test_encrypted_file)) {
229			unlink($this->test_encrypted_file);
230			}
231
232			if (is_file($this->test_decrypted_file)) {
233			unlink($this->test_decrypted_file);
234			}
235			}
236
237			/**
238			* Creates a test file
239			*
240			* @return string
241			*/
242			protected function createTestFile()
243			{
244			$file = __DIR__ .'/test.json';
245
246			file_put_contents($file, json_encode(['unit' => 'test']));
247			return $file;
248			}
249			}
250

wubbajack / filecrypt

Push — develop ( 6eb36d...b43094 )

FileEncrypterTest::testDecrypt() B

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