Looping through a Data File in the Postman Collection Runner
Blog post from Postman
Postman's Collection Runner allows users to execute all requests within a collection locally, facilitating API testing and performance measurement by generating detailed reports. Users can enhance testing by uploading data files, such as CSV or JSON, to simulate numerous scenarios and streamline database setup or teardown. The process involves importing data files and utilizing data variables in requests and scripts, with CSV files requiring UNIX format line endings and JSON files formatted as an array of key-value pairs. Postman's syntax for variable substitution in text fields uses double curly braces, while scripts rely on JavaScript and the pm.* API for accessing data file values. An example of using this functionality involves testing with data files about ramen search trends, showcasing the practical application of the Collection Runner's capabilities.
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