In this Postman application overview, we will go over how to install the application and the details of how to tests your API endpoints specifically for GET and Post method.
the following link will take you to the postman website where you can download the application if you do not have it already installed: Download
After the download the following video will help you install the application:
Before starting to test your API, it is best to create a workspace for the specific project that you are working on. This way team members can access and contribute to the test cases. However, if you are short on time you can jump to the next step "Creating a Collection". To do this, click on the workspace tab and then click on the 'Create Workspace' button and name your workspace. then click on the newly created workspace to write your requests within it.
To send request within this workspace. You need to create a new collection which will contain all the different requests to your API endpoint. Create a new Collection by clicking on the '+' that is location next to the collection side tab.
Once you have created the Collection, you can now create your request. Do this by expanding the newly created collection on the left panel and clicking on add request which is highlighted. Copy and paste the request URL of your API into the URL bar.
To add any new requests to your collection, right click on your collection on the left panel and select a add request. Alternatively, you can right click on the previously created request and click Duplicate. This also helps preserve the request variables.
For POST requests, the request body is required. To include all the data you must fill the request body.
For GET requests, the request needs to have header variables included. Click on the header tab within the request and add the keys and values.
To export your work, you can right click on the Collection that you have been working on and click Export which will prompt you to the version you would like to export. Once selected you can download the exported file.
This summary of Postman application showed the basics of creating a collection of requests to test an API endpoint. After reading this, you should be able to create a workspace and collection of requests, sending POST and GET requests to your desired API endpoint. If there are additional information you would like to learn about, there are some useful articles and resources provided below.