Master API Testing and Automation using TypeScript

Set up TypeScript with jest by installing a TypeScript preprocessor, add types for jest and for super test, and create a configuration so TypeScript works with your tests.

Install and configure jest for a TypeScript project, add type definitions and supertest typings, set up a basic configuration with npx, and downgrade jest to match type definitions.

Learn to implement and test get requests with query parameters in supertest, using direct query strings or the .query() helper to filter by postId and limit, and inspect responses.

Update an existing RESTful resource with the put method by targeting a specific id and sending the full title, body, and userId, demonstrating overwriting behavior in Postman.

Implement the put method using super test, update the data, and verify the title changes by comparing the before and after get responses.

Develop and run a TypeScript API test for get brands endpoint using supertest in VS Code, validating 200 status, body length, and verifying underscore id and underscore name as keys.

Master api testing and automation using typescript: update and delete a brand via put /brand/:id and delete /brand/:id using Swagger, with partial and full updates and test assertions.

Generate a unique brand name for each test run by appending a random id to fix the post /brand test and verify the response name matches the generated data.

create a unique brand in the post brand test, capture its id and name, and reuse them in the get brand id test to ensure reliable, repeatable api testing.

Expand testing coverage by implementing negative testing with schema validation and business logic checks to ensure API data adheres to structure, format, and core rules.

Learn to implement negative tests for a brand API, covering schema and logic validations, max name length, description is a string, invalid id errors, ensuring 422 responses and clear messages.

Leverage before all and after all hooks to create a brand before tests and clean up afterward, enabling independent, refactor-friendly API testing workflows with TypeScript.

Learn to use a before all hook in API tests to create a brand, share its id across tests, and remove dependencies, improving test independence and maintainability.

Learn to use the after all hook for teardown in API testing with TypeScript, cleaning up created brands after tests to keep databases small.