stockpack / vendor / guzzlehttp / psr7 / tests / CachingStreamTest.php

CachingStreamTest.php in StockPack – Stock photos and AI images from Unsplash, Adobe Stock, Freepik and more 2.4.2, at vendor/guzzlehttp/psr7/tests/CachingStreamTest.php

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1	<?php
2	namespace GuzzleHttp\Tests\Psr7;
3
4	use GuzzleHttp\Psr7;
5	use GuzzleHttp\Psr7\CachingStream;
6	use GuzzleHttp\Psr7\Stream;
7
8	/**
9	* @covers GuzzleHttp\Psr7\CachingStream
10	*/
11	class CachingStreamTest extends BaseTest
12	{
13	/** @var CachingStream */
14	private $body;
15	/** @var Stream */
16	private $decorated;
17
18	protected function setUp()
19	{
20	$this->decorated = Psr7\stream_for('testing');
21	$this->body = new CachingStream($this->decorated);
22	}
23
24	protected function tearDown()
25	{
26	$this->decorated->close();
27	$this->body->close();
28	}
29
30	public function testUsesRemoteSizeIfPossible()
31	{
32	$body = Psr7\stream_for('test');
33	$caching = new CachingStream($body);
34	$this->assertEquals(4, $caching->getSize());
35	}
36
37	public function testReadsUntilCachedToByte()
38	{
39	$this->body->seek(5);
40	$this->assertEquals('n', $this->body->read(1));
41	$this->body->seek(0);
42	$this->assertEquals('t', $this->body->read(1));
43	}
44
45	public function testCanSeekNearEndWithSeekEnd()
46	{
47	$baseStream = Psr7\stream_for(implode('', range('a', 'z')));
48	$cached = new CachingStream($baseStream);
49	$cached->seek(-1, SEEK_END);
50	$this->assertEquals(25, $baseStream->tell());
51	$this->assertEquals('z', $cached->read(1));
52	$this->assertEquals(26, $cached->getSize());
53	}
54
55	public function testCanSeekToEndWithSeekEnd()
56	{
57	$baseStream = Psr7\stream_for(implode('', range('a', 'z')));
58	$cached = new CachingStream($baseStream);
59	$cached->seek(0, SEEK_END);
60	$this->assertEquals(26, $baseStream->tell());
61	$this->assertEquals('', $cached->read(1));
62	$this->assertEquals(26, $cached->getSize());
63	}
64
65	public function testCanUseSeekEndWithUnknownSize()
66	{
67	$baseStream = Psr7\stream_for('testing');
68	$decorated = Psr7\FnStream::decorate($baseStream, [
69	'getSize' => function () { return null; }
70	]);
71	$cached = new CachingStream($decorated);
72	$cached->seek(-1, SEEK_END);
73	$this->assertEquals('g', $cached->read(1));
74	}
75
76	public function testRewindUsesSeek()
77	{
78	$a = Psr7\stream_for('foo');
79	$d = $this->getMockBuilder('GuzzleHttp\Psr7\CachingStream')
80	->setMethods(array('seek'))
81	->setConstructorArgs(array($a))
82	->getMock();
83	$d->expects($this->once())
84	->method('seek')
85	->with(0)
86	->will($this->returnValue(true));
87	$d->seek(0);
88	}
89
90	public function testCanSeekToReadBytes()
91	{
92	$this->assertEquals('te', $this->body->read(2));
93	$this->body->seek(0);
94	$this->assertEquals('test', $this->body->read(4));
95	$this->assertEquals(4, $this->body->tell());
96	$this->body->seek(2);
97	$this->assertEquals(2, $this->body->tell());
98	$this->body->seek(2, SEEK_CUR);
99	$this->assertEquals(4, $this->body->tell());
100	$this->assertEquals('ing', $this->body->read(3));
101	}
102
103	public function testCanSeekToReadBytesWithPartialBodyReturned()
104	{
105	$stream = fopen('php://temp', 'r+');
106	fwrite($stream, 'testing');
107	fseek($stream, 0);
108
109	$this->decorated = $this->getMockBuilder('\GuzzleHttp\Psr7\Stream')
110	->setConstructorArgs([$stream])
111	->setMethods(['read'])
112	->getMock();
113
114	$this->decorated->expects($this->exactly(2))
115	->method('read')
116	->willReturnCallback(function($length) use ($stream){
117	return fread($stream, 2);
118	});
119
120	$this->body = new CachingStream($this->decorated);
121
122	$this->assertEquals(0, $this->body->tell());
123	$this->body->seek(4, SEEK_SET);
124	$this->assertEquals(4, $this->body->tell());
125
126	$this->body->seek(0);
127	$this->assertEquals('test', $this->body->read(4));
128	}
129
130	public function testWritesToBufferStream()
131	{
132	$this->body->read(2);
133	$this->body->write('hi');
134	$this->body->seek(0);
135	$this->assertEquals('tehiing', (string) $this->body);
136	}
137
138	public function testSkipsOverwrittenBytes()
139	{
140	$decorated = Psr7\stream_for(
141	implode("\n", array_map(function ($n) {
142	return str_pad($n, 4, '0', STR_PAD_LEFT);
143	}, range(0, 25)))
144	);
145
146	$body = new CachingStream($decorated);
147
148	$this->assertEquals("0000\n", Psr7\readline($body));
149	$this->assertEquals("0001\n", Psr7\readline($body));
150	// Write over part of the body yet to be read, so skip some bytes
151	$this->assertEquals(5, $body->write("TEST\n"));
152	$this->assertEquals(5, $this->readAttribute($body, 'skipReadBytes'));
153	// Read, which skips bytes, then reads
154	$this->assertEquals("0003\n", Psr7\readline($body));
155	$this->assertEquals(0, $this->readAttribute($body, 'skipReadBytes'));
156	$this->assertEquals("0004\n", Psr7\readline($body));
157	$this->assertEquals("0005\n", Psr7\readline($body));
158
159	// Overwrite part of the cached body (so don't skip any bytes)
160	$body->seek(5);
161	$this->assertEquals(5, $body->write("ABCD\n"));
162	$this->assertEquals(0, $this->readAttribute($body, 'skipReadBytes'));
163	$this->assertEquals("TEST\n", Psr7\readline($body));
164	$this->assertEquals("0003\n", Psr7\readline($body));
165	$this->assertEquals("0004\n", Psr7\readline($body));
166	$this->assertEquals("0005\n", Psr7\readline($body));
167	$this->assertEquals("0006\n", Psr7\readline($body));
168	$this->assertEquals(5, $body->write("1234\n"));
169	$this->assertEquals(5, $this->readAttribute($body, 'skipReadBytes'));
170
171	// Seek to 0 and ensure the overwritten bit is replaced
172	$body->seek(0);
173	$this->assertEquals("0000\nABCD\nTEST\n0003\n0004\n0005\n0006\n1234\n0008\n0009\n", $body->read(50));
174
175	// Ensure that casting it to a string does not include the bit that was overwritten
176	$this->assertContains("0000\nABCD\nTEST\n0003\n0004\n0005\n0006\n1234\n0008\n0009\n", (string) $body);
177	}
178
179	public function testClosesBothStreams()
180	{
181	$s = fopen('php://temp', 'r');
182	$a = Psr7\stream_for($s);
183	$d = new CachingStream($a);
184	$d->close();
185	$this->assertFalse(is_resource($s));
186	}
187
188	/**
189	* @expectedException \InvalidArgumentException
190	*/
191	public function testEnsuresValidWhence()
192	{
193	$this->body->seek(10, -123456);
194	}
195	}
196