public function testFrameAddsContentLengthHeaderIfAsked() { $frame = new Frame('SEND', ['my-header' => 'my-value'], 'MyContent'); $frame->expectLengthHeader(true); $result = $frame->__toString(); $expected = "SEND\nmy-header:my-value\ncontent-length:9\n\nMyContent"; $this->assertEquals($expected, $result); }