The document compares REST and SOAP APIs. REST APIs use HTTP methods and URIs to access resources, have no official standard but are lightweight, flexible and support JSON, XML and other formats. Requests contain a URI, method, optional headers and body, and responses contain a status code and headers. Examples show GET and DELETE requests to retrieve or delete a customer resource. Factors for choosing a REST client library include support for parameters, responses, interoperability, security, error handling and complete data transfer.

1. REST API
(testing)

2. Christian Bos
• Test automation specialist
• Sinds okt. 2017 bij Immune-it
• Daarvoor > 10 jaar bij Sogeti
• Test consultant
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• trainer

7. SOAP
• official standard
• relative heavy-weighted
• robust and secure
• XML
REST
• no official standard
• relative light-weighted
• flexible
• JSON, XML, YAML, …

8. Request
• URI
• method
• header
• body (optional)
• paramters
Response
• status code
• header
• body

9. Request
• URI
• method
• header
• body (optional)
• paramters
Response
• status code
• header
• body

10. www.mydomain.com/resoures/accounts/customers
www.mydomain.com/resoures/accounts/customer/25

11. Request
• URI
• method
• header
• body (optional)
• paramters
Response
• status code
• header
• body

12. GETPOST PUT DELETE

13. www.mydomain.com/resoures/accounts/customer/25
www.mydomain.com/resoures/accounts/customer/25
GET
DELETE

14. Request
• URI
• method
• header
• body (optional)
• paramters
Response
• status code
• header
• body

16. Request
• URI
• method
• header
• body (optional)
• paramters
Response
• status code
• header
• body

20. COST
SPEED

21. Parameters (content body – variabels)
Output (response – status code)
Interoperabiliteit (response usable)
Security (authentication – CSS)
Errors (clear and useful messages)
Data (data stored and transferred complete and correct)

23. RequestsLibrary
• basic http library
• use http to ‘construct’ your own
REST request message
• naming of keyword is more user
friendly
RESTinstanceLibrary
• dedicated REST libary
• use dedicated keywords for easy
contruction of request message
• naming of keywords feels bit
‘off’

24. https://testautomationu.applitools.com/