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What is API Testing

21 Nov 202443791
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API Testing


API Testing is a set of quality assurance actions that include sending calls to the API, getting output, and validating the system’s response against the defined input parameters, in particular, the accuracy of data and data format, HTTP status codes, and error codes.


📍Key aspects of API Testing:


Data Accuracy: Ensure the data returned by the API is accurate and meets the expected results and requirements


Input Validation: Test a variety of inputs—valid, invalid, required, not required, edge cases, empty, or missing fields—and confirm proper error handling.


HTTP Status Codes: Validate that the API returns the appropriate status codes for different scenarios.


Authentication/Authorization: Ensure proper validation of tokens, API keys, or credentials, and verify that unauthorized requests are handled securely.


Error Handling: Check that error messages and codes are clear and informative for invalid requests.


Non-functional Testing: This includes performance testing, security testing, and other checks to ensure the API’s robustness under different conditions.

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