public function testRead()
{
$value = get_test_string();
$value_size = strlen($value);
$stream = string_to_stream($value);
$buffer = '';
$buffer_size = 1000;
$reader = new StringReader($stream, 0, $buffer, $buffer_size);
$this->assertEmpty($buffer);
$this->assertSame(0, $reader->getBytes());
$iterations = 0;
$bytes = 0;
while (!feof($stream)) {
$iterations++;
$bytes += $reader->read();
}
// Make sure we read the same number of bytes
$this->assertSame($value_size, $bytes);
$this->assertSame($value_size, $reader->getBytes());
// Make sure the data is copied to the buffer and is identical
$this->assertSame(md5($value), md5($buffer), "I/O itegrity check failed");
$min_iterations = ceil($value_size / $buffer_size);
$this->assertGreaterThanOrEqual($min_iterations, $iterations, "Finished reading the stream in {$iterations} iterations, but with a buffer_size of {$buffer_size} and {$value_size} bytes of data, it must have taken at least {$min_iterations} iterations");
}
