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1
Introduction
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ERT: Emacs Lisp Regression Testing
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Assertions with `should`
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Running a test case
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Debug a test
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Commercial break: Hyperbole
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Instrument function on the fly
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Mocking
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cl-letf
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Hooks
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Side effects and initial buffer state
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with-temp-buffer
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make-temp-file
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buffer-string
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buffer-name
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major-mode
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unwind-protect
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Input, with-simulated-input
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Running all tests
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Batch mode
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Skipping tests
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Conclusion
Description:
Explore the intricacies of writing test cases for GNU Hyperbole in this EmacsConf 2023 talk. Dive into Emacs Lisp Regression Testing (ERT), learning to use assertions with `should`, run and debug test cases, and instrument functions on the fly. Discover mocking techniques, understand the use of hooks, and manage side effects in testing. Master essential tools like `with-temp-buffer`, `make-temp-file`, and `unwind-protect`. Learn to simulate input, run tests in batch mode, and implement test skipping. Gain valuable insights to enhance your Emacs Lisp testing skills and contribute effectively to open-source projects.

Writing Test Cases for GNU Hyperbole: Lessons Learned - EmacsConf 2023

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Introduction