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What is Postman Sandbox?
Answer − Postman Sandbox is an Environment provided to execute JavaScript written as a part of the Pre-Request and Tests scripts for a request. This can be available for both Postman and Newman. Thus every script developed under the Tests or Pre-Request Scripts tab can be executed within this Sandbox.
Libraries and Utilities used in Postman Sandbox −
- Lodash - a utility in the JavaScript library.
- cheerio.
- BackboneJS.
- SugarJS.
- CryptoJS.
Environment, Global, Dynamic variables & Cookies
To set an Environment variable, we have to add the below script −
postman.setEnvironmentVariable(name of variable, value of variable)
To set a Global variable, we have to add the below script −
postman.setGlobalVariable(name of variable, value of variable)
To get an Environment variable, we have to add the below script −
postman.getEnvironmentVariable(name of variable)
To get a Global variable, we have to add the below script −
postman.getGlobalVariable(name of variable)
To clear an Environment variable, we have to add the below script −
postman.clearEnvironmentVariable(name of variable)
To clear a Global variable, we have to add the below script −
postman.clearGlobalVariable(name of variable)
To clear all Global variables, we have to add the below script −
postman.clearGlobalVariables()
To access/read a particular Environment variable say e1 we have to add the below script −
Environment["e1"]
To access/read a particular Global variable say G1 we have to add the below script −
globals["g1"]
To get all cookies for a domain, we have to add the below script −
responseCookies {array}
To obtain response cookie with name say c, we have to add the below script −
postman.getResponseCookie(c)
A dynamic variable cannot be used directly in the Sandbox. We can use them in a request endpoint, body or header in the format − {{<variable name>}}.
To add a timestamp, we have to add the below script −
{{$timestamp}}
To add a random integer from 0 to 5, we have to add the below script −
{{$randomInt}}
Test-only - This object can only be used for the scripts developed under the Tests. If we try to utilize it for the Pre-Request Scripts, we shall encounter errors.
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