fix a test

lib/common/certificate.go

@@ -179,6 +179,7 @@ func ReadCertificate(data []byte) (certificate Certificate, remainder []byte, er
 		if err != nil {
 			switch err.Error() {
 			case "error parsing certificate length: certificate is too short":
+				certificate.CertLen = 0
 				return
 			case "certificate parsing warning: certificate data is shorter than specified by length":
 				//err = nil

lib/common/key_certificate.go

@@ -240,6 +240,7 @@ func ReadKeyCertificate(data []byte) (key_certificate KeyCertificate, err error)
 			"reason":       "not enough data",
 		}).Error("error parsing key certificate")
 		err = errors.New("error parsing key certificate: not enough data")
+		key_certificate.SPKType = Integer(data[:])
 		return
 	}
 	key_certificate.SPKType = Integer(data[:2])

lib/common/keys_and_cert_test.go

@@ -12,7 +12,7 @@ func TestCertificateWithMissingData(t *testing.T) {
 	data := make([]byte, 128+256)
 	data = append(data, cert_data...)
 	keys_and_cert, _, err := ReadKeysAndCert(data)
-
+	assert.Nil(err)
 	cert, err := keys_and_cert.GetCertificate()
 	if assert.NotNil(err) {
 		assert.Equal("certificate parsing warning: certificate data is shorter than specified by length", err.Error())