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network device monitoring tools

Country/Region china
Company guru99 limited
Categories Wireless Electricity Meter
Update 2020-01-18 00:06:08
ICP License Issued by the Chinese Ministry
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What is Postman?

Postman is currently one of the most popular tools used in API testing. It started in 2012 as a side project by Abhinav Asthana to simplify API workflow in testing and development. API stands for Application Programming Interface which allows software applications to communicate with each other via API calls.

In this training course, you will learn:

  • What is Postman?
  • Why Use Postman?
  • How to use Postman
  • Working with GET Requests
  • Working with POST Requests
  • How to Parameterize Requests
  • How to Create Postman Tests
  • How to Create Collections
  • How to Run Collections using Collection Runner
  • How to Run Collections using Newman

Why Use Postman?

With over 4 million users nowadays, Postman has become a tool of choice for the following reasons:

  1. Accessibility - To use Postman, one would just need to log-in to their own accounts making it easy to access files anytime, anywhere as long as a Postman application is installed on the computer.
  2. Use of Collections - Postman lets users create collections for their API calls. Each collection can create subfolders and multiple requests. This helps in organizing your test suites.
  3. Collaboration - Collections and environments can be imported or exported making it easy to share files. A direct link can also be used to share collections.
  4. Creating Environments - Having multiple environments aids in less repetition of tests as one can use the same collection but for a different environment. This is where parameterization will take place which we will discuss in further lessons.
  5. Creation of Tests - Test checkpoints such as verifying for successful HTTP response status can be added to each API calls which help ensure test coverage.
  6. Automation Testing - Through the use of the Collection Runner or Newman, tests can be run in multiple iterations saving time for repetitive tests.
  7. Debugging - Postman console helps to check what data has been retrieved making it easy to debug tests.
  8. Continuous Integration - With its ability to support continuous integration, development practices are maintained.

How to Download and Install POSTMAN

Being an Open Source tool, Postman can be easily downloaded. Here are the steps to install:

Step 1) Go to and choose your desired platform among Mac, Windows or Linux. Click Download.

Step 2) Your download is in progress message should now display on the Apps page. Once the download has completed, click on Run.

Step 3) Installation Starts

Step 4) In the next window, Signup for a Postman Account

NOTE: There are two ways to sign up for a Postman account. One is to create an own Postman account, and the other is to use a Google account. Though Postman allows users to use the tool without logging in, signing up ensures that your collection is saved and can be accessed for later use.

Step 5) Select the workspace tools you need and click Save My Preferences

Step 6) You will see the Startup Screen

How to use Postman

Below is the Postman Workspace. Let's explore the different features of the tool!

  1. New - This is where you will create a new request, collection or environment.
  2. Import - This is used to import a collection or environment. There are options such as import from file, folder, link or paste raw text.
  3. Runner - Automation tests can be executed through the Collection Runner. This will be discussed further in the next lesson.
  4. Open New - Open a new tab, Postman Window or Runner Window by clicking this button.
  5. My Workspace - You can create a new workspace individually or as a team.
  6. Invite - Collaborate on a workspace by inviting team members.
  7. History - Past requests that you have sent will be displayed in History. This makes it easy to track actions that you have done.
  8. Collections - Organize your test suite by creating collections. Each collection may have subfolders and multiple requests. A request or folder can also be duplicated as well.
  9. Request tab - This displays the title of the request you are working on. By default, "Untitled Request" would be displayed for requests without titles.
  10. HTTP Request - Clicking this would display a dropdown list of different requests such as GET, POST, COPY, DELETE, etc. In testing, the most commonly used requests are GET and POST.
  11. Request URL - Also known as an endpoint, this is where you will identify the link to where the API will communicate with.
  12. Save - If there are changes to a request, clic

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