Testing web services

About Me

Taras Lytvyn

testers.lviv.ua/automation

tlytvyn@lohika.com

Prehistory

Service = web interface

+ Web service on Java

+DB usage

SERVICE AS STATE MACHINE

Google services

Web Services

What is web service ?QA point of view

Examples

You can find web services in Network tab

Classification

REST

SOAP

RESTRepresentational

State Transfer

1. Give every “thing” an ID2. Link things together3. Use standard methods4. Resources can have multiple representations5. Communicate independently

SOAP1. Use WSDL for description2. SOAP is approach of

protocols and standards3. Works with operationsSimple Object

Access Protocol

WSDL

Web Services Description Language is an XML-based

interface description language that is used for describing the functionality offered by a web

service.

Request methods

Content Type on response

So what to test ?

Response Correctness

data datatype

dataorder

fullness

What else ?

•client part that uses this service•http statuses•authorization• response timeout• load testing• security testing

•NEGATIVE cases !

REAL EXAMPLEGET http://maps.googleapis.com/maps/api/elevation/json?locations=39.7391536, -104.9847034|36.455556, -116.866667&sensor=true

Valid HTTP status code – 200 OK

Response timeout !>= 0.5 s

Negative cases (check status):- incorrect locations- incorrect sensor value

{ "results": [ { "elevation": 1608.637939453125, "location": { "lat": 39.7391536, "lng": -104.9847034 }, "resolution": 4.771975994110107 }, { "elevation": -50.78903579711914, "location": { "lat": 36.455556, "lng": -116.866667 }, "resolution": 19.08790397644043 } ], "status": "OK"}

<Response xmlns="http://maps.googleapis.com/maps/api/elevation/json"> <results> <e> <elevation>1608.637939453125</elevation> <location> <lat>39.7391536</lat> <lng>-104.9847034</lng> </location> <resolution>4.771975994110107</resolution> </e> <e> <elevation>-50.78903579711914</elevation> <location> <lat>36.455556</lat> <lng>-116.866667</lng> </location> <resolution>19.08790397644043</resolution> </e> </results> <status>OK</status></Response>

So how to test ?

Service MocksParsing

- xpaths- regexps

ManuallyAutomation !!!

TEST WITH:

Testing features...

PROBLEMS:

- SERVICE DOCUMENTATION- DBC - “DYNAMIC” RESPONSE PROBLEM

SERVICE DOCUMENTATION

DOC. example

DATA BASE Connectionfor reading data

“Dynamic” response

Tools

rem curl -i -H "Content-Type: application/json" -X POST -d "11032480" http://172.22.40.73:8080/gift-registry/registry-products/5017a4d3ee12d093a5794968/delete

EXAMPLE:

Manual testing

SOAP UI- Support different service standards- Service mocking- Groovy & Java API- Ability of Security and Load Service

Testing- Logging results- Maven plugin +- Could be easily integrated to CI- Eclipse Plugin- Test Suite could executed with JUnit

SOAP UI PROJECT SAMPLE

REAL EXAMPLEGET http://maps.googleapis.com/maps/api/elevation/json?locations=39.7391536, -104.9847034|36.455556, -116.866667&sensor=true

Valid HTTP status code – 200 OK

Response timeout !>= 0.5 s

Response correctness

SOAP UI TESTING VIDEO

CLICK TO WATCH VIDEO ON YOUTUBE

Response parsing

approach

JSON Object Library

JACKSON JSON LIBRARY

{ "results": [ { "elevation": 1608.637939453125, "location": { "lat": 39.7391536, "lng": -104.9847034 }, "resolution": 4.771975994110107 }, { "elevation": -50.78903579711914, "location": { "lat": 36.455556, "lng": -116.866667 }, "resolution": 19.08790397644043 } ], "status": "OK"}

fill levelsCorrect

Conclusion

SUCCESSFUL WEB SERVICE TESTING =

SOAP UI + ECLIPSE + JAVA + JACKSON + SOAP UI JAVA API

resolve all needs, approaches and

problems described earlier

Thank you !