Middleware Test Structure
Explore how to test Redux middleware by mocking dispatch, getState, and next functions. Understand the middleware structure and validate correct action handling through Jest tests, ensuring middleware passes actions correctly and behaves as expected.
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The middleware is where most of the complex logic of our application will reside. Because middleware has full access to the store’s dispatch() and getState() methods, as well as control over the actions’ flow via next(), middleware can become quite complex, with nontrivial asynchronous flows.
Middleware test structure
At their core, middleware are functions that receive actions to process, albeit with a complicated signature. Redux makes the first two function ...