public function testGetSignatureReturnsSignatureById() { $signature = $this->getMockSignature(); $signature->expects($this->once())->method('getId')->will($this->returnValue($signatureId = 'S01')); $envelope = new Envelope($this->getMockSession()); $envelope->addSignature($signature); $this->assertSame($signature, $envelope->getSignature($signatureId)); }