path: root/2023/info/test-before.md

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Format: 27-min talk; Q&A: BigBlueButton conference room  
Status: Q&A to be extracted from the room recordings  





# Talk

<div class="vid"><video controls preload="none" id="test-mainVideo"><source src="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main.webm" />captions="""<track label="English" kind="captions" srclang="en" src="/2023/captions/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main.vtt" default />"""<track kind="chapters" label="Chapters" src="/2023/captions/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main--chapters.vtt" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video>[[!template id="chapters" vidid="test-mainVideo" data="""
00:03.120 Introduction
03:11.160 ERT: Emacs Lisp Regression Testing
04:14.360 Assertions with `should`
04:56.920 Running a test case
06:54.560 Debug a test
07:50.380 Commercial break: Hyperbole
09:10.480 Instrument function on the fly
10:39.120 Mocking
14:41.240 cl-letf
15:24.100 Hooks
15:55.720 Side effects and initial buffer state
17:05.100 with-temp-buffer
17:16.520 make-temp-file
17:33.288 buffer-string
18:09.920 buffer-name
18:51.980 major-mode
19:02.680 unwind-protect
20:15.100 Input, with-simulated-input
21:38.460 Running all tests
23:03.220 Batch mode
24:05.060 Skipping tests
26:08.460 Conclusion

"""]]<div></div>Duration: 26:55 minutes<div class="files resources"><ul><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--intro.vtt">Download --intro.vtt</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--intro.webm">Download --intro.webm</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main--chapters.vtt">Download --main--chapters.vtt</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main.opus">Download --main.opus (13MB)</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main.vtt">Download --main.vtt</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--main.webm">Download --main.webm (57MB)</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--pad.html">Download --pad.html</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--pad.md">Download --pad.md</a></li><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--transcript.txt">Download --transcript.txt</a></li><li><a href="https://toobnix.org/w/4XmcGSe3TQrJJNUqQXqK2B">View on Toobnix</a></li></ul></div></div>

# Q&A

<div class="vid"><video controls preload="none" id="test-qanda"><source src="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--answers.webm" /><p><em>Your browser does not support the video tag. Please download the video instead.</em></p></video><div></div>Duration: 26:22 minutes<div class="files resources"><ul><li><a href="https://media.emacsconf.org/2023/emacsconf-2023-test--what-i-learned-by-writing-test-cases-for-gnu-hyperbole--mats-lidell--answers.webm">Download --answers.webm (41MB)</a></li></ul></div></div>
# Description
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