● Web services enable clients i.e. users/machines to interact with servers i.e machines and transfer data over a network.

● Interoperable: Web services allow machines in different platforms to interact with each other (Fig 1).

● APIs (Application Programming Interface) act as a guideline of how to access data of different web services.

Terminologies:

XML/JSON - A markup language used to encode data. Provides standardization. JSON is similar to XML but less bulky.

SOAP- A type of web service where data is transferred using XML enveloped in a SOAP request.

RESTful - A type of web service that uses a URI (Uniform Resource Locator) to send requests and uses both XML and JSON to get the responses.

Why Web Service Testing?

● Allows businesses to connect all their machines despite different platform and geographical location.

● A failure in web service operation might result in huge economic loss for businesses.

● Regression testing ensures that updating web service does not cause break it and/or reduce its efficacy (maintain SLA).

● A user session starts when a unique user starts interacting with a web service and

ends when the user quits

● Authentication Key

● Convert test cases into XML based test cases.

● Fault seeding in our web service → Purposefully

adding faulty cases to see if our test cases can catch

the errors.

● Replay test cases on a fault seeded web service.

● Analyze the efficiency of our test cases:

○ How many faults they are able to identify?

○ Code coverage and function coverage?

○ Time taken to return data?

● Compare with other testing methods and do a relative

comparison.

● Our future work will analyze the reports of our web

service test cases to find patterns in test cases that

fail to identify faults.

● Make better test cases.

● Made our own web application by implementing web services

using Django Framework which uses Python:

https://servo.cs.wlu.edu/animals/

● Used PetFinder API, Twitter API, Reddit API and Cat API(to get cat

pictures!)

● Made our own web service so that people can access our

database, using our API. Used Django-Rest Framework.

● API documentation → Instruction manual

● Used SOAP UI to make test cases. Tested our web application.

● Test Cases included property transfer, Groovy script, assertions,

JSON hierarchy test etc.

● Deployed our API so that anyone and everyone can use it!

INTRODUCTION

This research is supported by Summer Research Scholars and Dr. Sara Sprenkle

METHODS SUMMER WORK

FUTURE WORK

Figure 1: This diagram shows how different clients access data on a database using a web service.Source: http://sharepoint-works.blogspot.com/2012/12/basics-of-web-services.html.

Automated Web Service TestingAzmain Amin, Mina Shnoudah

Dr. Sara SprenkleDepartment of Computer Science

Washington and Lee University

Fig 2: How a web service works.

Fig 3: Research methodology.

Fig 4: RockBridge Pets web application.

Fig 5: Using Soap UI to test our web application.

Fig 6: The top shows an example of a successful test case, and the bottom shows an example of a failed test case.