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← Covering every line of code in tests does not guarantee covering every possible program state.
17 connected korrents · 18 moments from 22 Oct 2015 to 3 Sept 2026.
Everything filed under software quality
software quality
Everything filed under AI slop
AI slop
Everything filed under coding agents
coding agents
Everything filed under developer tools
developer tools
Everything filed under code generation
code generation
Everything filed under vibe coding
vibe coding Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: Covering every line of code in tests does not guarantee covering every possible program state. Covering every line of code in tests does not guarantee covering every possible program state. Last stated 4 months ago
7 Jun 2026
SS
Salvatore Sanfilippo — holds since 2026-06-07 — tap for who they are
Same subject: High code coverage does not guarantee that code is well tested or of high quality. — tap to centre the map on it High code coverage does not guarantee that code is well tested or of high quality. Last stated 7 years ago
4 Feb 2020
MP
Maxence Poutord — holds since 2020-02-04 — tap for who they are
Same subject: Adding a config option so nobody breaks compounds into permutations no test suite can cover, because it is infinitely harder to evolve software that has users. — tap to centre the map on it Adding a config option so nobody breaks compounds into permutations no test suite can cover, because it is infinitely harder to evolve software that has users. Last stated 2 months ago
10 Aug 2026
PS
Peter Steinberger — holds since 2026-08-10 — tap for who they are
Same subject: Code that is complex or clever can pass its tests while still being bad code. — tap to centre the map on it Code that is complex or clever can pass its tests while still being bad code. Last stated 11 years ago
22 Oct 2015
TB
Thorsten Ball — holds since 2015-10-22 — tap for who they are
Same subject: If you are not going to read the generated code, what you need is conformance testing: proof that it performs within the boundaries of the code it replaced. — tap to centre the map on it If you are not going to read the generated code, what you need is conformance testing: proof that it performs within the boundaries of the code it replaced. Last stated 2 months ago
12 Aug 2026
CM
Charity Majors — holds since 2026-08-12 — tap for who they are
Same subject: Unit tests alone give little confidence in a program, because the mistakes people actually make are not the conveniently unit-testable ones. — tap to centre the map on it Unit tests alone give little confidence in a program, because the mistakes people actually make are not the conveniently unit-testable ones. Last stated 9 years ago
5 Oct 2017
HW
Hillel Wayne — holds since 2017-10-05 — tap for who they are
Same subject: AI-generated code is not fully reliable and typically needs significant manual effort to keep it working correctly. — tap to centre the map on it AI-generated code is not fully reliable and typically needs significant manual effort to keep it working correctly. Last stated 4 months ago
16 Jun 2026
SW
Stephen Wolfram — holds since 2026-06-16 — tap for who they are
Same subject: A sense of achievement in software survives writing almost none of the code yourself. — tap to centre the map on it A sense of achievement in software survives writing almost none of the code yourself. Last stated a month ago
26 Aug 2026
DH
David Heinemeier Hansson — holds since 2026-08-26 — tap for who they are
Same subject: A passing test suite is not evidence that the software works, so an agent must also be made to start the thing and exercise it the way a person would. — tap to centre the map on it A passing test suite is not evidence that the software works, so an agent must also be made to start the thing and exercise it the way a person would. Last stated 6 months ago
19 Mar 2026
SW
Simon Willison — holds since 2026-03-19 — tap for who they are
Same subject: A coding agent does not learn from its mistakes the way a person does -- it repeats the same error indefinitely unless a human notices and writes it down. — tap to centre the map on it A coding agent does not learn from its mistakes the way a person does -- it repeats the same error indefinitely unless a human notices and writes it down. Last stated 6 months ago
25 Mar 2026
MZ
Mario Zechner — holds since 2026-03-25 — tap for who they are
Same subject: A coding-agent company should not train its own model: it has to stay neutral ground for models to compete on. — tap to centre the map on it A coding-agent company should not train its own model: it has to stay neutral ground for models to compete on. Last stated 4 weeks ago
3 Sept 2026
DR
Dax Raad — holds since 2026-09-03 — tap for who they are
Same subject: A company on a monolith cannot use AI on it: no model in the next eighteen months will hold that codebase, so the monolith has to be broken up or rewritten. — tap to centre the map on it A company on a monolith cannot use AI on it: no model in the next eighteen months will hold that codebase, so the monolith has to be broken up or rewritten. Last stated 7 months ago
11 Mar 2026
SY
Steve Yegge — holds since 2026-03-11 — tap for who they are
Same subject: A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach. — tap to centre the map on it A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach. Last stated 5 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: A good tool raises the floor of what people can build without lowering the ceiling, and almost every tool quietly lowers the ceiling. — tap to centre the map on it A good tool raises the floor of what people can build without lowering the ceiling, and almost every tool quietly lowers the ceiling. Last stated a year ago
18 Sept 2025
TL
Tobias Lütke — holds since 2025-09-18 — tap for who they are
Same subject: A new API framework that ignores how existing apps were historically built undermines its own introduction — tap to centre the map on it A new API framework that ignores how existing apps were historically built undermines its own introduction Last stated a month ago
31 Aug 2026
CH
Craig Hockenberry — holds since 2026-08-31 — tap for who they are
Same subject: A badly written AI outbound email is evidence of a bad vendor, not of a limit of AI. — tap to centre the map on it A badly written AI outbound email is evidence of a bad vendor, not of a limit of AI. Last stated 9 months ago
1 Jan 2026
JL
Jason Lemkin — holds since 2026-01-01 — tap for who they are
Same subject: A growing fraction of social media is AI slop influencers being replied to by bots — an echo of an echo of an echo. — tap to centre the map on it A growing fraction of social media is AI slop influencers being replied to by bots — an echo of an echo of an echo. Last stated a month ago
23 Aug 2026
FC
François Chollet — holds since 2026-08-23 — tap for who they are
Same subject: A low-effort AI-designed landing page costs a product its audience before the product itself is ever judged. — tap to centre the map on it A low-effort AI-designed landing page costs a product its audience before the product itself is ever judged. Last stated 2 months ago
13 Aug 2026
MH
Mitchell Hashimoto — holds since 2026-08-13 — tap for who they are