Test::testDecodeDictionaryAccess() - Code Metrics - Inspection of "Updated dependencies" - s9e/Bencode - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Branch — master (52a373)

by Josh

created 2021-07-15 14:50 UTC

Test::testDecodeDictionaryAccess() A

↳ Parent: Test

Complexity

Conditions	2
Paths	2

Size

Total Lines	13
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	2
eloc	7
c	1
b	0
f	0
nc	2
nop	0
dl	0
loc	13
rs	10

<?php declare(strict_types=1);

namespace s9e\Bencode\Tests;

use ArrayObject;
use PHPUnit\Framework\TestCase;
use TypeError;
use s9e\Bencode\Bencode;
use s9e\Bencode\Exceptions\ComplianceError;
use s9e\Bencode\Exceptions\DecodingException;
use s9e\Bencode\Exceptions\EncodingException;
use stdClass;

class Test extends TestCase
{
	public static function setUpBeforeClass(): void
	{
		// Preload the library so the memory-related tests don't count it as overhead
		Bencode::decode('i1e');
	}

	/**
	* @group memory
	*/
	public function testMemoryList()
	{
		$len = 10000;
		$str = str_repeat('i0e', $len + 2);

		$str[0]  = $str[1]  = $str[2]  = 'l';
		$str[-1] = $str[-2] = $str[-3] = 'e';

		$reference = memory_get_peak_usage();

		// Create a copy of the expected result so we get a feel for how much memory it will use
		$expected = array_fill(0, $len, 0);
		unset($expected);

		$before = memory_get_peak_usage();
		if ($before === $reference)
		{
			$this->markTestSkipped('Cannot measure peak memory because the reference value is too high');
		}

		$decoded = Bencode::decode($str);

		$after   = memory_get_peak_usage();
		$delta   = $after - $before;

		// Test that the delta is less than 4 KB
		$this->assertLessThan(4096, $delta);
	}

	/**
	* @group memory
	*/
	public function testMemoryString()
	{
		$reference = memory_get_peak_usage();

		// Create a bencoded value that will be decoded into a string that is 2e6 characters long.
		// The overhead from bencoding is 8 for "2000000:" and we avoid creating copies of the
		// string by modifying it in place
		$len    = 2000000;
		$str    = str_repeat('0', $len + 8);
		$str[0] = '2';
		$str[7] = ':';

		$before = memory_get_peak_usage();
		if ($before === $reference)
		{
			$this->markTestSkipped('Cannot measure peak memory because the reference value is too high');
		}

		$decoded  = Bencode::decode($str);
		$after    = memory_get_peak_usage();
		$delta    = $after - $before;
		$overhead = $delta - $len;

		// Test that the overhead was less than 4 KB
		$this->assertLessThan(4096, $overhead);
		$this->assertEquals($len, strlen($decoded));
	}

	/**
	* @dataProvider getEncodeTests
	*/
	public function testEncode($bencoded, $value)
	{
		$this->assertSame($bencoded, Bencode::encode($value));
	}

	public function getEncodeTests()
	{
		return [
			[
				'i22e',
				22
			],
			[
				'i22e',
				(double) 22.0
			],
			[
				'i1e',
				true
			],
			[
				'i0e',
				false
			],
			[
				'i-1e',
				-1
			],
			[
				'le',
				[]
			],
			[
				'de',
				new stdClass
			],
			[
				'de',
				new foo
			],
			[
				'd3:fooi1ee',
				['foo' => 1]
			],
			[
				'd3:fooi1ee',
				(object) ['foo' => 1]
			],
			[
				'd3:bari2e3:fooi1ee',
				['foo' => 1, 'bar' => 2]
			],
			[
				'd3:fool1:a1:b1:cee',
				['foo' => ['a', 'b', 'c']]
			],
			[
				'd0:l1:a1:b1:cee',
				['' => ['a', 'b', 'c']]
			],
			[
				'd3:food3:bari1ee1:xd1:yi1eee',
				new ArrayObject([
					'foo' => new ArrayObject(['bar' => 1]),
					'x'   => new ArrayObject(['y' => 1])
				])
			],
			[
				'd1:0i0e1:1i1ee',
				[1 => 1, 0 => 0]
			],
			[
				'd2:11i11e1:5i5ee',
				[5 => 5, 11 => 11]
			],
			[
				'i1000000000e',
				1000000000
			],
		];
	}

	/**
	* @dataProvider getEncodeInvalidTests
	*/
	public function testEncodeInvalid($input)
	{
		$this->expectException(EncodingException::class);
		$this->expectExceptionMessage('Unsupported value');

		try
		{
			$this->assertNull(Bencode::encode($input));
		}
		catch (EncodingException $e)
		{
			$this->assertSame($input, $e->getValue());

			throw $e;
		}
	}

	public function getEncodeInvalidTests()
	{
		$fp = fopen('php://stdin', 'rb');
		fclose($fp);

		return [
			[function(){}],
			[1.2],
			[$fp],
		];
	}

	/**
	* @dataProvider getDecodeTests
	*/
	public function testDecode($bencoded, $value)
	{
		$this->assertEquals($value, Bencode::decode($bencoded));
	}

	public function getDecodeTests()
	{
		return [
			[
				'i1234567890e',
				1234567890
			],
			[
				'i-1e',
				-1
			],
			[
				'i0e',
				0
			],
			[
				'le',
				[]
			],
			[
				'de',
				new ArrayObject
			],
			[
				'd3:fooi1ee',
				new ArrayObject(['foo' => 1])
			],
			[
				'd3:bari2e3:fooi1ee',
				new ArrayObject(['foo' => 1, 'bar' => 2])
			],
			[
				'd3:fool1:a1:b1:cee',
				new ArrayObject(['foo' => ['a', 'b', 'c']])
			],
			[
				'd3:food3:bari1ee1:xd1:yi1eee',
				new ArrayObject([
					'foo' => new ArrayObject(['bar' => 1]),
					'x'   => new ArrayObject(['y' => 1])
				])
			],
			[
				'3:abc',
				'abc'
			],
			[
				'd0:l1:a1:b1:cee',
				new ArrayObject(['' => ['a', 'b', 'c']])
			],
			[
				'0:',
				''
			],
			[
				'1:i',
				'i'
			],
			[
				'2:i-',
				'i-'
			],
			[
				'3:i-1',
				'i-1'
			],
			[
				'4:i-1e',
				'i-1e'
			],
			[
				'lli0ei1eeli2ei3eee',
				[[0, 1], [2, 3]]
			],
		];
	}

	/**
	* @dataProvider getDecodeInvalidTests
	*/
	public function testDecodeInvalid($input, $expected)
	{
		$this->expectException(get_class($expected));
		$this->expectExceptionMessage($expected->getMessage());

		try
		{
			$this->assertNull(Bencode::decode($input));
		}
		catch (DecodingException $e)
		{
			$this->assertEquals($expected->getOffset(), $e->getOffset());
			throw $e;
		}
	}

	public function getDecodeInvalidTests()
	{
		return [
			[
				null,
				new TypeError(Bencode::class . '::decode(): Argument #1 ($bencoded) must be of type string, null given')
			],
			[
				'',
				new DecodingException('Premature end of data', 0)
			],
			[
				'lxe',
				new DecodingException('Illegal character', 1)
			],
			[
				'l',
				new DecodingException('Premature end of data', 0)
			],
			[
				'lle',
				new DecodingException('Premature end of data', 2)
			],
			[
				'lee',
				new ComplianceError('Superfluous content', 2)
			],
			[
				'le0',
				new ComplianceError('Superfluous content', 2)
			],
			[
				'ddee',
				new DecodingException('Illegal character', 1)
			],
			[
				'd1:xe',
				new DecodingException('Illegal character', 4)
			],
			[
				'd1:xl',
				new DecodingException('Premature end of data', 4)
			],
			[
				'd1:xx',
				new DecodingException('Illegal character', 4)
			],
			[
				'ie',
				new DecodingException('Illegal character', 1)
			],
			[
				'i1x',
				new DecodingException('Illegal character', 2)
			],
			[
				'lxe',
				new DecodingException('Illegal character', 1)
			],
			[
				'3:abcd',
				new ComplianceError('Superfluous content', 5)
			],
			[
				'li',
				new DecodingException('Premature end of data', 1)
			],
			[
				'l3',
				new DecodingException('Premature end of data', 1)
			],
			[
				'i-1-e',
				new DecodingException('Illegal character', 3)
			],
			[
				'i',
				new DecodingException('Premature end of data', 0)
			],
			[
				'i-',
				new DecodingException('Premature end of data', 1)
			],
			[
				'd1:xi-',
				new DecodingException('Premature end of data', 5)
			],
			[
				'i1',
				new DecodingException('Premature end of data', 1)
			],
			[
				'i-1',
				new DecodingException('Premature end of data', 2)
			],
			[
				'lli123',
				new DecodingException('Premature end of data', 5)
			],
			[
				'3 abc',
				new DecodingException('Illegal character', 1)
			],
			[
				'3a3:abc',
				new DecodingException('Illegal character', 1)
			],
			[
				'3a',
				new DecodingException('Illegal character', 1)
			],
			[
				':a',
				new DecodingException('Illegal character', 0)
			],
			[
				'3:abc3:abc',
				new ComplianceError('Superfluous content', 5)
			],
			[
				'3:abci',
				new ComplianceError('Superfluous content', 5)
			],
			[
				'3:',
				new DecodingException('Premature end of data', 1)
			],
			[
				'3:a',
				new DecodingException('Premature end of data', 2)
			],
			[
				'2:a',
				new DecodingException('Premature end of data', 2)
			],
			[
				'l11:ae',
				new DecodingException('Premature end of data', 5)
			],
			[
				'i0123e',
				new ComplianceError('Illegal character', 2)
			],
			[
				'i00e',
				new ComplianceError('Illegal character', 2)
			],
			[
				'i-0e',
				new ComplianceError('Illegal character', 2)
			],
			[
				'01:a',
				new ComplianceError('Illegal character', 1)
			],
			[
				'1',
				new DecodingException('Premature end of data', 0)
			],
			[
				'e',
				new DecodingException('Illegal character', 0)
			],
			[
				'-1',
				new DecodingException('Illegal character', 0)
			],
			[
				'd3:fooi0e3:foo3:abce',
				new ComplianceError("Duplicate dictionary entry 'foo'", 9)
			],
			[
				'd4:abcdi0e4:abcdli0eee',
				new ComplianceError("Duplicate dictionary entry 'abcd'", 10)
			],
			[
				'd3:fooi0e3:bar3:abce',
				new ComplianceError("Out of order dictionary entry 'bar'", 9)
			],
			[
				'd1:5i0e2:11i0ee',
				new ComplianceError("Out of order dictionary entry '11'", 7)
			],
		];
	}

	public function testDecodeDictionaryAccess()
	{
		$dict = Bencode::decode('d3:bar4:spam3:fooi42ee');

		$this->assertSame('spam', $dict->bar);

		$this->assertSame(42,     $dict['foo']);

		$actual = [];
		foreach ($dict as $k => $v)
		{
			$actual[$k] = $v;
		}
		$this->assertSame(['bar' => 'spam', 'foo' => 42], $actual);
	}
}

class foo extends stdClass
{
}

1			<?php declare(strict_types=1);
2
3			namespace s9e\Bencode\Tests;
4
5			use ArrayObject;
6			use PHPUnit\Framework\TestCase;
7			use TypeError;
8			use s9e\Bencode\Bencode;
9			use s9e\Bencode\Exceptions\ComplianceError;
10			use s9e\Bencode\Exceptions\DecodingException;
11			use s9e\Bencode\Exceptions\EncodingException;
12			use stdClass;
13
14			class Test extends TestCase
15			{
16			public static function setUpBeforeClass(): void
17			{
18			// Preload the library so the memory-related tests don't count it as overhead
19			Bencode::decode('i1e');
20			}
21
22			/**
23			* @group memory
24			*/
25			public function testMemoryList()
26			{
27			$len = 10000;
28			$str = str_repeat('i0e', $len + 2);
29
30			$str[0] = $str[1] = $str[2] = 'l';
31			$str[-1] = $str[-2] = $str[-3] = 'e';
32
33			$reference = memory_get_peak_usage();
34
35			// Create a copy of the expected result so we get a feel for how much memory it will use
36			$expected = array_fill(0, $len, 0);
37			unset($expected);
38
39			$before = memory_get_peak_usage();
40			if ($before === $reference)
41			{
42			$this->markTestSkipped('Cannot measure peak memory because the reference value is too high');
43			}
44
45			$decoded = Bencode::decode($str);
			0 ignored issues – show Unused Code introduced 2021-07-15 14:52 UTC by Report Bug Copy Issue Report The assignment to `$decoded` is dead and can be removed. Loading history...
46			$after = memory_get_peak_usage();
47			$delta = $after - $before;
48
49			// Test that the delta is less than 4 KB
50			$this->assertLessThan(4096, $delta);
51			}
52
53			/**
54			* @group memory
55			*/
56			public function testMemoryString()
57			{
58			$reference = memory_get_peak_usage();
59
60			// Create a bencoded value that will be decoded into a string that is 2e6 characters long.
61			// The overhead from bencoding is 8 for "2000000:" and we avoid creating copies of the
62			// string by modifying it in place
63			$len = 2000000;
64			$str = str_repeat('0', $len + 8);
65			$str[0] = '2';
66			$str[7] = ':';
67
68			$before = memory_get_peak_usage();
69			if ($before === $reference)
70			{
71			$this->markTestSkipped('Cannot measure peak memory because the reference value is too high');
72			}
73
74			$decoded = Bencode::decode($str);
75			$after = memory_get_peak_usage();
76			$delta = $after - $before;
77			$overhead = $delta - $len;
78
79			// Test that the overhead was less than 4 KB
80			$this->assertLessThan(4096, $overhead);
81			$this->assertEquals($len, strlen($decoded));
82			}
83
84			/**
85			* @dataProvider getEncodeTests
86			*/
87			public function testEncode($bencoded, $value)
88			{
89			$this->assertSame($bencoded, Bencode::encode($value));
90			}
91
92			public function getEncodeTests()
93			{
94			return [
95			[
96			'i22e',
97			22
98			],
99			[
100			'i22e',
101			(double) 22.0
102			],
103			[
104			'i1e',
105			true
106			],
107			[
108			'i0e',
109			false
110			],
111			[
112			'i-1e',
113			-1
114			],
115			[
116			'le',
117			[]
118			],
119			[
120			'de',
121			new stdClass
122			],
123			[
124			'de',
125			new foo
126			],
127			[
128			'd3:fooi1ee',
129			['foo' => 1]
130			],
131			[
132			'd3:fooi1ee',
133			(object) ['foo' => 1]
134			],
135			[
136			'd3:bari2e3:fooi1ee',
137			['foo' => 1, 'bar' => 2]
138			],
139			[
140			'd3:fool1:a1:b1:cee',
141			['foo' => ['a', 'b', 'c']]
142			],
143			[
144			'd0:l1:a1:b1:cee',
145			['' => ['a', 'b', 'c']]
146			],
147			[
148			'd3:food3:bari1ee1:xd1:yi1eee',
149			new ArrayObject([
150			'foo' => new ArrayObject(['bar' => 1]),
151			'x' => new ArrayObject(['y' => 1])
152			])
153			],
154			[
155			'd1:0i0e1:1i1ee',
156			[1 => 1, 0 => 0]
157			],
158			[
159			'd2:11i11e1:5i5ee',
160			[5 => 5, 11 => 11]
161			],
162			[
163			'i1000000000e',
164			1000000000
165			],
166			];
167			}
168
169			/**
170			* @dataProvider getEncodeInvalidTests
171			*/
172			public function testEncodeInvalid($input)
173			{
174			$this->expectException(EncodingException::class);
175			$this->expectExceptionMessage('Unsupported value');
176
177			try
178			{
179			$this->assertNull(Bencode::encode($input));
180			}
181			catch (EncodingException $e)
182			{
183			$this->assertSame($input, $e->getValue());
184
185			throw $e;
186			}
187			}
188
189			public function getEncodeInvalidTests()
190			{
191			$fp = fopen('php://stdin', 'rb');
192			fclose($fp);
193
194			return [
195			[function(){}],
196			[1.2],
197			[$fp],
198			];
199			}
200
201			/**
202			* @dataProvider getDecodeTests
203			*/
204			public function testDecode($bencoded, $value)
205			{
206			$this->assertEquals($value, Bencode::decode($bencoded));
207			}
208
209			public function getDecodeTests()
210			{
211			return [
212			[
213			'i1234567890e',
214			1234567890
215			],
216			[
217			'i-1e',
218			-1
219			],
220			[
221			'i0e',
222			0
223			],
224			[
225			'le',
226			[]
227			],
228			[
229			'de',
230			new ArrayObject
231			],
232			[
233			'd3:fooi1ee',
234			new ArrayObject(['foo' => 1])
235			],
236			[
237			'd3:bari2e3:fooi1ee',
238			new ArrayObject(['foo' => 1, 'bar' => 2])
239			],
240			[
241			'd3:fool1:a1:b1:cee',
242			new ArrayObject(['foo' => ['a', 'b', 'c']])
243			],
244			[
245			'd3:food3:bari1ee1:xd1:yi1eee',
246			new ArrayObject([
247			'foo' => new ArrayObject(['bar' => 1]),
248			'x' => new ArrayObject(['y' => 1])
249			])
250			],
251			[
252			'3:abc',
253			'abc'
254			],
255			[
256			'd0:l1:a1:b1:cee',
257			new ArrayObject(['' => ['a', 'b', 'c']])
258			],
259			[
260			'0:',
261			''
262			],
263			[
264			'1:i',
265			'i'
266			],
267			[
268			'2:i-',
269			'i-'
270			],
271			[
272			'3:i-1',
273			'i-1'
274			],
275			[
276			'4:i-1e',
277			'i-1e'
278			],
279			[
280			'lli0ei1eeli2ei3eee',
281			[[0, 1], [2, 3]]
282			],
283			];
284			}
285
286			/**
287			* @dataProvider getDecodeInvalidTests
288			*/
289			public function testDecodeInvalid($input, $expected)
290			{
291			$this->expectException(get_class($expected));
292			$this->expectExceptionMessage($expected->getMessage());
293
294			try
295			{
296			$this->assertNull(Bencode::decode($input));
297			}
298			catch (DecodingException $e)
299			{
300			$this->assertEquals($expected->getOffset(), $e->getOffset());
301			throw $e;
302			}
303			}
304
305			public function getDecodeInvalidTests()
306			{
307			return [
308			[
309			null,
310			new TypeError(Bencode::class . '::decode(): Argument #1 ($bencoded) must be of type string, null given')
311			],
312			[
313			'',
314			new DecodingException('Premature end of data', 0)
315			],
316			[
317			'lxe',
318			new DecodingException('Illegal character', 1)
319			],
320			[
321			'l',
322			new DecodingException('Premature end of data', 0)
323			],
324			[
325			'lle',
326			new DecodingException('Premature end of data', 2)
327			],
328			[
329			'lee',
330			new ComplianceError('Superfluous content', 2)
331			],
332			[
333			'le0',
334			new ComplianceError('Superfluous content', 2)
335			],
336			[
337			'ddee',
338			new DecodingException('Illegal character', 1)
339			],
340			[
341			'd1:xe',
342			new DecodingException('Illegal character', 4)
343			],
344			[
345			'd1:xl',
346			new DecodingException('Premature end of data', 4)
347			],
348			[
349			'd1:xx',
350			new DecodingException('Illegal character', 4)
351			],
352			[
353			'ie',
354			new DecodingException('Illegal character', 1)
355			],
356			[
357			'i1x',
358			new DecodingException('Illegal character', 2)
359			],
360			[
361			'lxe',
362			new DecodingException('Illegal character', 1)
363			],
364			[
365			'3:abcd',
366			new ComplianceError('Superfluous content', 5)
367			],
368			[
369			'li',
370			new DecodingException('Premature end of data', 1)
371			],
372			[
373			'l3',
374			new DecodingException('Premature end of data', 1)
375			],
376			[
377			'i-1-e',
378			new DecodingException('Illegal character', 3)
379			],
380			[
381			'i',
382			new DecodingException('Premature end of data', 0)
383			],
384			[
385			'i-',
386			new DecodingException('Premature end of data', 1)
387			],
388			[
389			'd1:xi-',
390			new DecodingException('Premature end of data', 5)
391			],
392			[
393			'i1',
394			new DecodingException('Premature end of data', 1)
395			],
396			[
397			'i-1',
398			new DecodingException('Premature end of data', 2)
399			],
400			[
401			'lli123',
402			new DecodingException('Premature end of data', 5)
403			],
404			[
405			'3 abc',
406			new DecodingException('Illegal character', 1)
407			],
408			[
409			'3a3:abc',
410			new DecodingException('Illegal character', 1)
411			],
412			[
413			'3a',
414			new DecodingException('Illegal character', 1)
415			],
416			[
417			':a',
418			new DecodingException('Illegal character', 0)
419			],
420			[
421			'3:abc3:abc',
422			new ComplianceError('Superfluous content', 5)
423			],
424			[
425			'3:abci',
426			new ComplianceError('Superfluous content', 5)
427			],
428			[
429			'3:',
430			new DecodingException('Premature end of data', 1)
431			],
432			[
433			'3:a',
434			new DecodingException('Premature end of data', 2)
435			],
436			[
437			'2:a',
438			new DecodingException('Premature end of data', 2)
439			],
440			[
441			'l11:ae',
442			new DecodingException('Premature end of data', 5)
443			],
444			[
445			'i0123e',
446			new ComplianceError('Illegal character', 2)
447			],
448			[
449			'i00e',
450			new ComplianceError('Illegal character', 2)
451			],
452			[
453			'i-0e',
454			new ComplianceError('Illegal character', 2)
455			],
456			[
457			'01:a',
458			new ComplianceError('Illegal character', 1)
459			],
460			[
461			'1',
462			new DecodingException('Premature end of data', 0)
463			],
464			[
465			'e',
466			new DecodingException('Illegal character', 0)
467			],
468			[
469			'-1',
470			new DecodingException('Illegal character', 0)
471			],
472			[
473			'd3:fooi0e3:foo3:abce',
474			new ComplianceError("Duplicate dictionary entry 'foo'", 9)
475			],
476			[
477			'd4:abcdi0e4:abcdli0eee',
478			new ComplianceError("Duplicate dictionary entry 'abcd'", 10)
479			],
480			[
481			'd3:fooi0e3:bar3:abce',
482			new ComplianceError("Out of order dictionary entry 'bar'", 9)
483			],
484			[
485			'd1:5i0e2:11i0ee',
486			new ComplianceError("Out of order dictionary entry '11'", 7)
487			],
488			];
489			}
490
491			public function testDecodeDictionaryAccess()
492			{
493			$dict = Bencode::decode('d3:bar4:spam3:fooi42ee');
494
495			$this->assertSame('spam', $dict->bar);
			0 ignored issues – show Bug introduced 2021-07-15 14:52 UTC by Report Bug Copy Issue Report The property `bar` does not seem to exist on `ArrayObject`. Loading history...
496			$this->assertSame(42, $dict['foo']);
497
498			$actual = [];
499			foreach ($dict as $k => $v)
500			{
501			$actual[$k] = $v;
502			}
503			$this->assertSame(['bar' => 'spam', 'foo' => 42], $actual);
504			}
505			}
506
507			class foo extends stdClass
508			{
509			}

s9e / Bencode

Branch — master (52a373)

Test::testDecodeDictionaryAccess() A

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