What is API, how does it work, typical API methods, status codes and implementation.

1. What is API

2. What is API?
Weather
API
/DallasTemperature
GET
/CityTemperature
POST
URL: https://api.weatherapi.com/DallasTemperature
Method: GET
{
“celcius”: 25,
“fahrenheit”: 77
}

3. What is API?
Weather
API
/DallasTemperature
GET
/CityTemperature
POST
URL:
https://api.weatherapi.com/CityTemperature
Method: POST
Body: {“city”: “New-York”}
{
“celcius”: 15,
“fahrenheit”: 59
}

4. Types of API requests

5. HTTP response status codes

6. Client - Server Application
API
(Server)
Web-browser
(client)
password
username
Log in

7. Client - Server Application
API
(Server)
Web-browser
(client)
Welcome
John123
Log in
(click)

8. Client - Server Application
API
(Server)
Web-browser
(client)
{}
{
“username”: “John123”,
“password”: “Welcome”
}
Request
Response
{}
{
“firstname”: “John”,
“lastname”: “Smith”,
“age”: 35,
}

9. Client - Server Application
API
(Server)
Web-browser
(client)
{}
{
“username”: “John123”,
“password”: “Welcome”
}
Request
Response
{}
{
“firstname”: “John”,
“lastname”: “Smith”,
“age”: 35,
}

10. Functional End-To-End Testing
API
(Server)
testRigor
Web
Application

11. Mocking API Response
API
(Server)
testRigor
Web
Application
Mock
Response

12. Direct API call
API
(Server)
testRigor
Web
Application

13. Summary:
● API - Application Programming Interface (black box)
● Method types: Get, Post, Put, Delete
● Typical request consists of: URL, Headers, Request Method,
Request Body
● Status codes: 2xx (Success), 3xx (Redirect), 4xx (Client
error), 5xx (Server error)
● TestRigor can mock APIs and interact with APIs directly