Writing your Clojure tests in EDN files

10 months ago

Jacob O'Bryant discusses his simplified approach to unit testing, where input data is defined and expected return values are generated and stored in EDN files.
The test runner evaluates the code, adds the result to the test file, and checks for changes via git diffs, eliminating the need for traditional pass/fail tests.
Helper functions like `t/with-db` are used to populate in-memory databases for testing, making the process more straightforward and REPL-like.
Exceptions in test cases are captured as data under an `:ex` key, and stack traces are truncated to focus on relevant frames.
Intermediate values tapped during execution are included in test cases for inspection, enhancing debugging capabilities.
The test runner function `run-examples!` can be integrated into file watchers to update test results automatically on file saves.

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