how to create and send the request/response body for the post method in test class
7606
How do I unit test code that includes a callout?
47108
How to Write a Test Class for an InvocableMethod?
144441
executing web service using postman
9840
How to Test Messaging.sendEmail
81169
How can I call a custom REST API Method simply?
99039
Test Method Not Returning Records
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How do I test a private function or a class that has private methods, fields or inner classes?
139313
Test run for Web Service Callout batch class
95732
Use of @IsTest versus testMethod and location of test methods in classes
36195
When should I use GET or POST method? What's the difference between them?
122276
Error: Unable to generate a temporary class (result=1) ... When Invoking Methods on a Web Service
123437
Where are the request method constants in the Servlet API?
45333
SingleEmailMessage sending isn't working when called from Unit Test
143071
Passing parameters from test methods
28359
"Methods defined as TestMethod do not support Web service callouts" error when testing apex callout
115711
I am about to automate the Web API testing, how to initiate
108646
Read GET/POST parameters in apex class when service is called from external client