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<?php |
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namespace iqb\stream; |
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use iqb\ErrorMessage; |
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use PHPUnit\Framework\TestCase; |
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class SubStreamTest extends TestCase |
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{ |
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private $string; |
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private $memoryStream; |
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private $filename = __DIR__ . '/ipsum.txt'; |
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public function setUp() |
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{ |
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$this->string = \file_get_contents($this->filename); |
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$this->memoryStream = \fopen('php://memory', 'r+'); |
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if (\strlen($this->string) !== ($bytesWritten = \fwrite($this->memoryStream, $this->string))) { |
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throw new \RuntimeException('Setup failed!: ' . $bytesWritten); |
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} |
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} |
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public function offsetProvider() |
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{ |
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$length = \filesize($this->filename); |
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return [ |
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"SubStream for 0:$length" => [0, $length, 0, $length, 31, 32], |
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"SubStream for 10:" . ($length-10) => [10, $length-10, 10, $length-10, 31, 32], |
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"SubStream for " . ($length-53) . ':53' => [$length-53, 53, 0, 55, 31, 32], |
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// Different seek variants |
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"SubStream for " . ($length-350) . ':256 and SEEK_CUR' => [$length-350, 256, 0, 256, 1, 32, \SEEK_CUR], |
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"SubStream for " . ($length-350) . ':256 and SEEK_END' => [$length-350, 256, -256, 0, 1, 32, \SEEK_END], |
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]; |
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} |
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/** |
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* @dataProvider offsetProvider |
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*/ |
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public function testSubStream(int $offset, int $length, int $iterationStart, int $iterationLimit, int $iterationStep, int $probeLength, int $seekMode = \SEEK_SET) |
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{ |
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$subStream = \fopen(SUBSTREAM_SCHEME . '://' . $offset . ':' . $length . '/' . (int)$this->memoryStream, 'r'); |
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$this->assertTrue(\is_resource($subStream)); |
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$referenceName = \tempnam(\sys_get_temp_dir(), 'phpunit_substream_ref'); |
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$referenceStream = \fopen($referenceName, 'r+'); |
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$this->assertSame($length, \fwrite($referenceStream, \substr($this->string, $offset, $length))); |
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\fclose($referenceStream); |
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$referenceStream = \fopen($referenceName, 'r'); |
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for ($i=$iterationStart; $i<$iterationLimit; $i+=$iterationStep) { |
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\fseek($referenceStream, $i, $seekMode); |
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\fseek($subStream, $i, $seekMode); |
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$this->assertEquals($string = \fread($referenceStream, $probeLength), \fread($subStream, $probeLength), "Iteration: $i"); |
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} |
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} |
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public function testReadWithoutSeek() |
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{ |
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$offset = 500; |
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$length = 1000; |
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$subStream = \fopen(SUBSTREAM_SCHEME . '://' . $offset . ':' . $length . '/' . (int)$this->memoryStream, 'r'); |
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$this->assertTrue(\is_resource($subStream)); |
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$referenceStream = \fopen('php://memory', 'r+'); |
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$this->assertSame($length, \fwrite($referenceStream, \substr($this->string, $offset, $length))); |
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\fseek($referenceStream, 0); |
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$this->assertEquals(\fread($subStream, 2*$length), \fread($referenceStream, 2*$length)); |
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} |
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} |
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iqb /
Morgue
