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<?php
namespace GuzzleHttp\Tests\Stream;
use GuzzleHttp\Stream\Stream;
use GuzzleHttp\Stream\FnStream;
/**
* @covers GuzzleHttp\Stream\FnStream
*/
class FnStreamTest extends \PHPUnit_Framework_TestCase
{
/**
* @expectedException \BadMethodCallException
* @expectedExceptionMessage seek() is not implemented in the FnStream
*/
public function testThrowsWhenNotImplemented()
{
(new FnStream([]))->seek(1);
}
public function testProxiesToFunction()
{
$s = new FnStream([
'read' => function ($len) {
$this->assertEquals(3, $len);
return 'foo';
}
]);
$this->assertEquals('foo', $s->read(3));
}
public function testCanCloseOnDestruct()
{
$called = false;
$s = new FnStream([
'close' => function () use (&$called) {
$called = true;
}
]);
unset($s);
$this->assertTrue($called);
}
public function testDoesNotRequireClose()
{
$s = new FnStream([]);
unset($s);
}
public function testDecoratesStream()
{
$a = Stream::factory('foo');
$b = FnStream::decorate($a, []);
$this->assertEquals(3, $b->getSize());
$this->assertEquals($b->isWritable(), true);
$this->assertEquals($b->isReadable(), true);
$this->assertEquals($b->isSeekable(), true);
$this->assertEquals($b->read(3), 'foo');
$this->assertEquals($b->tell(), 3);
$this->assertEquals($a->tell(), 3);
$this->assertEquals($b->eof(), true);
$this->assertEquals($a->eof(), true);
$b->seek(0);
$this->assertEquals('foo', (string) $b);
$b->seek(0);
$this->assertEquals('foo', $b->getContents());
$this->assertEquals($a->getMetadata(), $b->getMetadata());
$b->seek(0, SEEK_END);
$b->write('bar');
$this->assertEquals('foobar', (string) $b);
$this->assertInternalType('resource', $b->detach());
$b->close();
}
public function testDecoratesWithCustomizations()
{
$called = false;
$a = Stream::factory('foo');
$b = FnStream::decorate($a, [
'read' => function ($len) use (&$called, $a) {
$called = true;
return $a->read($len);
}
]);
$this->assertEquals('foo', $b->read(3));
$this->assertTrue($called);
}
}