GuzzleHttp\Tests\Psr7\FunctionsTest::testCanCreateIteratorBasedStream PHP Метод

    public function testCanCreateIteratorBasedStream()
    {
        $a = new \ArrayIterator(['foo', 'bar', '123']);
        $p = Psr7\stream_for($a);
        $this->assertInstanceOf('GuzzleHttp\\Psr7\\PumpStream', $p);
        $this->assertEquals('foo', $p->read(3));
        $this->assertFalse($p->eof());
        $this->assertEquals('b', $p->read(1));
        $this->assertEquals('a', $p->read(1));
        $this->assertEquals('r12', $p->read(3));
        $this->assertFalse($p->eof());
        $this->assertEquals('3', $p->getContents());
        $this->assertTrue($p->eof());
        $this->assertEquals(9, $p->tell());
    }