in this sliders, I want to show you all everything about Postman. All features, use cases and pros and cons of Postman.

1. {"postman":"collection"}
Postman gives you superpowers

2. About me
I'm Alihossein shahabi a witty software developer and data
engineer. all my focus is on back-end technology. I'm
Interested in PHP, Javascript, Python, Apache Kafka, Apache
Solr and Linux. I love learning, in fact, it is my only
skill and ability.

3. Skills & experience
Apache
Solr
User
experience
Physical
Computing
Apache
Kafka
Apache
Zookeeper
Apache
Solr
Apache
Airflow
Apache
Hadoop

4. Cookies

5. Collections

6. Collections
● Save a request by placing it in a
collection
● Collections help you organise requests
● additionally, you can add
documentation, tests and are useful
sharing with other

7. Collections
You can share a collection with
other :
● The export collection as a file and
import from a file
● Sharing a link (requires Postman
account)
● Embed Button (requires Postman
account)
● Team sharing (require Postman Pro)

8. Test

9. Test
● Commonly just a simple assertion
● one request can have multiple tests
● tests only run after the request
completed

10. pm.test("Successful POST request", function() {
pm.expect(pm.response.code).to.be.oneOf([200])
});

11. Workflows and Scenarios

13. postman.setNextRequest("Request name")
Null
(Stop execution)
String
(Go to the next
request)

14. Variables

15. Variables
● Placeholder for dynamic values
● Similar to any programing language
● DRY principle (Don't Repeat Yourself)

16. Variables
● Global
● Environment
● Local
● Data

17. Variables
Global Variables
● {{ myVariable }}
● pm.globals.get("variable_name")
● pm.globals.set("variable_name",value)
● pm.globals.unset("variable_name")
● pm.globals.clear()

18. Variables
Environment Variables
● Similar to global variables but with a
narrower scope
● The idea for switching between
different setups
● Same usage in the request builder as
with global variables

19. Variables
Environment Variables
Accessing variables in the scripts :
● Pm. environment.set('variable_name' ,
value)
● pm.environment.get('variable_name')
● pm.environment.unset('variable_name
')

20. Variables
Environment Variables
Best practices
● Clear / remove variables once you do
not need them
● Avoid mixing with global variables
● Get variables in scripts using the
scoped getter
pm.variables.get()

21. Variables
Environment Variables
When to use
● Storing environment-specific
information
● URLs, authentication credentials
● Passing data to other requests

22. Sessions

23. Sessions
● Introduced in Postman > 6.2
● sessions provide an additional layer
when working with variables

24. Pre-request Script

25. Pre-request
Script
● Similar to test scripts , but with no
assertions
● Ideal for making your requests
dynamic
● Usually used in combination with
variables

27. Test automation tools

28. Test
automation
tools
● Collection runner
● Postman Monitors (pro)
● Newman
● Newman + Jenkins
● Newman + other CI servers

29. Collection runner

30. Postman Monitors (pro)

31. Postman
Monitors (pro)
● Run collection as regular intervals
● pro feature but you can use up to
1000 API calls per month free

32. Postman
Monitors (pro)
● Known limitations
● Postman servers are not in-network as
you are
● Can not important Global variables
● Global and environment variables are
not persisted
● Pro feature but you can use up to
1000 API calls per month freeKnown limitations

33. Newman
How to automation your postman API tests with newman ?

34. Newman
what is Newman ?
● Newman is a CLI tool which allows you
to run a Postman collection directly
from the command line .
Preparation
● Node.js
○ node --version
● Npm (Node Package manager)
○ npm --version
● Newman ()
○ newman --version

35. newman run "https://api.getpostman.com/collections/5f18edde-72a0-4076-807a-d9d8025f5fe4"

36. Newman
● Get public link
● Export collection
● Postman API

37. --reporters = cli , html

38. Newman
● Useful when using Jenkins or any
other CI server
● Show a nice overview dashboard
● Help with debugging failed tests
Why generate HTML reports ?

39. npm install -g newman-reporter-htmlextra

40. --reporters=cli , htmlextra

41. Newman
● Useful when using Jenkins or any
other CI server
● Show a nice overview dashboard
● Help with debugging failed tests
Create your own template

42. How to create
Data sets?
● Duplicate the requests and change
the data
● Use external Data files
● use Pre-request scripts, variables and
workflow

43. team
Collaboration
● How to use Git to version your
collections
● How to work with Team Workspaces

44. Using the Git
Version Control System

45. A typical workflow

46. Pros
● Free
● History of changes
● All data is stored locally
● Code reviews possible

47. Cons
● Manual process each time you make a
change
● Importing | exporting overhead
● git conflict can occur

48. Team workspaces

49. Team
workspaces
● Create a team
● Add collection to the newly created
workspace
● Share the workspace

50. Understanding users and permissions

51. Understanding
users and
permissions
● User can only be part of one team (for
the free and pro account)
● Team members will be able to see all
workspaces and collections
● permissions are assigned to
collections
Important to remember

52. Mock Servers

53. Mock Servers
● Fake Api that simulates a server
response but tries to behave like a real
API
● Can be used to serve canned
responses to a specific request
What is a mock server anyway?

54. Mock Servers
● API design, prototyping and
development
● API testing
why use a mock server ?

55. Mock Servers
● Cannot match body
● Cannot match the query parameters
○ Get /api/foo/2?hidden=true
○ Get /api/foo/2?hidden=false
● Request a specific response by
sending a header
Know limitations