API Testing Tools & Salesforce API Test

What are the API Testing Tools ?

Few tools available to test the REST / SOAP API with out writing any code.
With that simple test  can verify web service is working fine or not.

Share the widely used API Tools information?

Below are the tools which i used in my experience.

• Hurl
• Postman
• SoapUI

Explain each one ?

SoapUI	PostMan	Hurl.it
Specifically built tool for API functional testing.	Google Chrome Extension for API testing.	Online link available foe API testing.
Download SoapUI Open Source https://www.soapui.org/downloads/soapui.html	Google Chrome Webstore – Add this extension https://www.getpostman.com/ Sign in using below https://identity.getpostman.com/login Note: If we have account, Can login to any machine and get all the API collections which we tested.	https://www.hurl.it/
Supports both REST & SOAP	Supports both REST & SOAP, But mostly used for REST API testing	Only REST API testing supported.
Time Saving – The raised request can be save and can re-run later point of time.	Time Saving – The raised request can be save and can re-run later point of time.	Time Consuming – Every time need to enter the request details.
Installation needed	Extension need to be added	Not required any installation, Directly access by url

How to access Salesforce API from external application?

1. Create a Connected app in Salesforce. Share Consumer Key,Consumer Secret with client.
2. Create a user with access API only access.As best practice create a separate profile API access and create a user under that.Share that user credentials with external application. 
• Note: This user credentials will be shared with external application,So it should have permission only 'API Only User' to limit that credential access.
3. Generate Access Token from these values & Send CRUD request along with Access Token.

How to generate access token from "Hurl" tool ?

Please enter below details to get the access token

POST	https://salesforce.com/services/oauth2/token
Authentication	Basic Authentication, Add Username & Password deepik@gmail.com pwd
Headers	Content-type application/x-www-form-urlencoded
Parameters :
username	deepik@gmail.com
password	pwd
client_id	3MVG9d8..z..iQcL79m2_ABa8Kiq5mtRIW88bMQS5JVc6_4_zdyIjDZ8
client_secret	127141494000000000000
grant_type	password

Some times you get Invalid_grant / Authentication Failure error? What could be the reason?

           1. If your organization security token is enabled,Need to add password+security token in above password field

        2. If IP range is enabled and still getting the above error,Please verify on connected app permission is granted or not.Provide the permission for that user.

How to get the user details from Salesforce by passing the user id from external application?

GET	https://salesforce.com/services/apexrest/User/
Headers	Content-Type application/x-www-form-urlencoded Authorization Bearer  00D7F000000owBh!AQwAQJ9d5Ffx9ndeM8 1DPowo8AM1kOe88Y TnSw0tJUTUgDxtov64NaO_8kxCFQ0
Parameters	UserID 0057F000d4000

What is the significance of "Bearer" in Authorization request?

            Authentication Type.

How to perform API call with out code?Ex:Get the user details from Salesforce?

How to generate Access token & API request from Postman ?