7. Monolith Structure owns Server as Web API

Postman for API Development

Introduction to Postman

Postman is a widely used API development tool that simplifies the process of testing, managing, and developing HTTP APIs. It offers a user-friendly interface for making HTTP requests, scrutinizing responses, and preserving collections of requests for future use.

Features of Postman

• Allows developers to send various types of HTTP requests such as GET, POST, PUT, DELETE, etc.

• Sets custom headers and adds query parameters.

• Sends request payloads.

• Automates API testing with tools for writing test scripts and generating documentation.

These features make Postman an all-encompassing tool for API testing, troubleshooting integration issues, and exploratory testing.

Deep Dive into Postman's Functionality

Sending HTTP Requests

Postman allows developers to send various types of HTTP requests, which are essential for interacting with APIs. Below is an example of a GET request in Postman:

GET <https://api.example.com/resource>

Setting Custom Headers

Headers provide metadata for HTTP requests. Postman allows you to set custom headers, which can be crucial for API functionality. Here's an example:

GET <https://api.example.com/resource>
Headers:
Content-Type: application/json
Authorization: Bearer your-token

Adding Query Parameters

Query parameters are added to the end of the URL to modify the response or provide additional information. Here's an example of adding query parameters in Postman:

GET <https://api.example.com/resource?parameter=value>

Sending Request Payloads

Request payloads are necessary for POST and PUT requests. They contain the data you want to send to the API. Here's an example of a JSON payload in Postman:

POST <https://api.example.com/resource>
Headers:
Content-Type: application/json
Body:
{
    "key": "value"
}

Automating API Testing

Postman provides tools for automating API testing, including writing test scripts and generating documentation. This helps ensure the API behaves as expected. Here's an example of a test script in Postman:

pm.test("Status code is 200", function () {
    pm.response.to.have.status(200);
});

This script checks that the response status code is 200, indicating a successful request.

In conclusion, Postman is an indispensable tool for API development, providing a wide range of features to streamline the process of building, testing, and managing APIs. It is an essential part of any developer's toolkit.

Reference

The content in this document is based on the original notes provided in Azerbaijani. For further details, you can refer to the original document using the following link:

Original Note - Azerbaijani Version