public function testSeeksToPositionByReading()
{
$a = new AppendStream([Stream::factory('foo'), Stream::factory('bar'), Stream::factory('baz')]);
$this->assertTrue($a->seek(3));
$this->assertEquals(3, $a->tell());
$this->assertEquals('bar', $a->read(3));
$a->seek(6);
$this->assertEquals(6, $a->tell());
$this->assertEquals('baz', $a->read(3));
}
