Api testing

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Basics of API Testing
By Keshav

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Agenda of API Testing
API TESTING TOOL SELECTION WORKFLOW
API and API Testing Right tool for API Testing How API works ?
API Methods ADVANTAGES DEMO
Different API Methods Advantages of API Testing Live Demo

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What is API?
API stands for Application
Programming Interface.
API is an software to software
interface, not a user interface.
With APIs, applications talk to
each other without any user
knowledge or intervention.
Implemented by writing function
calls in the program.

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What is API Testing?
API testing uses software to send
calls to the API and get the
output.
API testing treats the component
under test as a black box.
The goal of API testing is to verify
correct performance and error
handling of the component prior
to its integration into an
application.

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API Workflow
Response
Response
Request

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REST API
REST – stands for Representational State Transfer.
 It is a set of functions to which the developers performs requests and
receive responses. In REST API interaction is made via HTTP protocol.
 REST also allows computers to talk to each other over a network.
 It involves using HTTP methods to send and receive messages, and does
not require a strict message definition, unlike Web services.
 REST messages often take the form of XML, or JavaScript Object
Notation (JSON).

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HTTP Methods
4 Commonly Used Methods:-
GET : - Provides a read only access to a resource.
POST :- Used to update an existing resource or create a new resource.
PUT :- Used to create a new resource.
DELETE :- Used to Remove a resource.
RESOUCE GET PUT POST DELETE
URL Retrieve the
member
Create / Replace a
new resource
Create new
entry
Used to remove a
resource

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PUT
REQUEST
PUT
RESPONSE
What is API Testing ?
GET
REQUEST
GET
RESPONSE
POST
REQUEST
POST
RESPONSE
DELETE
REQUEST
DELETE
RESPONSE

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REST API Inputs
GET POST PUT DELETE
Method - GET Method - POST Method - PUT Method - DELETE
URL URL URL URL
Custom-Header Custom-Header Custom-Header Custom-Header
Input JSON

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GET Methods
Request
GET
https://uat-beam-
ms.livfame.com/v1/event/de
tail?beamId=7767
Response
Status : 200 OK
{
message: "Beam Detail fetched successfully"
data:
{
name : "name goes here"
eventStatus : "COMPLETED"
startTime : "10 Oct 2015
14:25:00"
viewCount : "2354"
likeCount : 88
disLikeCount : 99
commentCount : 5
duration : 1490
performerId : 10244
}
status: 1
}

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POST Methods
Request
POST
URL : http://qa-
api.livfame.com/api/v11_1
{
"email“ : "kkashyap1707@gmail.com",
"password“ : "admin",
"medium“ : "MANUAL",
"apiVersion“ : "1.0",
"appKey“ : "myAppKey",
"actionName“ : "login"
}
Response
Status : 200 OK
{
"status": 1,
"message": "Login successfully",
"data": {
"access_token": "rcd676up5kit3akd93a",
"email": "admn.famelive@gmail.com",
"roles": "[ROLE_USER]",
"userId": "1",
"isAccountVerified": true,
"timeZoneName": "GMT +05:30 - New Delhi",
"timeZoneId": 8,
"fameName": "admin.famelive",
"imageName": "zsdasdaw",
"userChannel": "a468784e6e2a9874619e7f",
},
"code": 10001
}

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PUT Methods
Request
GET
ms.livfame.com/v1/event/detai
l?beamId=7767
Response
Status : 200 OK
{
data:
{
name: "name goes here"
eventStatus: "COMPLETED"
startTime: "10 Oct 2015 14:25:00"
viewCount: "2354"
likeCount: 88
disLikeCount: 99
commentCount: 5
duration: 1490
performerId: 10244
}
status: 1
}

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DELETE Methods
Request
GET
ms.livfame.com/v1/event/detai
l?beamId=7767
Response
Status : 200 OK
{
data:
{
name: "name goes here"
eventStatus: "COMPLETED"
startTime: "10 Oct 2015 14:25:00"
viewCount: "2354"
likeCount: 88
disLikeCount: 99
commentCount: 5
duration: 1490
performerId: 10244
}
status: 1
}

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HTTP Response Codes
Some HTTP response codes, which are often used with REST:-
200 OK: - Code indicates that the request was successful.
201 Created:- Code indicates that request was successful and a resource was created. It is used
to confirm success of a PUT or POST request.
400 Bad Request :- It happens especially with POST and PUT requests, when the data does not
pass validation, or is in the wrong format.
404 Not Found:- response indicates that the required resource could not be found.
401 Unauthorized:- error indicates that you need to perform authentication before accessing the
resource.
405 Method Not Allowed:- HTTP method used is not supported for this resource.
409 Conflict:- Conflict request to create the same resource twice.
500 Internal Server Error:- Occurs due to some error on Server side.

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Common Types of Tests in API Testing
Common API Bugs:-
 Verify if API doesn’t return any response.
 Based on input request, return request should be checked.
 Verification of the API whether it triggers some other event or calls
another API
 Verification of the API whether it is updating any data structure
 Delayed in API Response time
 Response Data is not structured
 Difficulty in connecting and getting response from API

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Advantages of API Testing
Advantages of API Testing:-
 Time Effective
 Language Independent
 Test Core Functionality
 Reduce Testing cost
 Reduced Risks

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Challenges of API Testing
Challenges of API Testing:-
 Main challenges in API testing is Parameter Combination, Parameter
Selection, and Call Sequencing
 There is no GUI available to test the application which makes difficult to
give input values
 Parameters selection and categorization required to be known to the
testers
 Exception handling function needs to be tested

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Basic Inputs
URL : http://qa-api.livfame.com/api/v11_1
Header Method
Output ResponseInput JSON

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Client Location
Our Office
Email us at:
Keshav.Kashyap@tothenew.com

Api testing

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