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Past
-
ParisRB.new 05.05.2026
Would Your Tests Catch This Bug? A Mutation Testing Story
Szymon Fiedler -
RBQ 26-27.03.2026
Would Your Tests Catch This Bug? A Mutation Testing Story
Szymon Fiedler -
EuRuKo 18-19.09.2025
Rewrite with confidence: validating business rules through isolated testing
Szymon Fiedler -
wroclove.rb 11-13.04.2025
Rewrite with confidence: validating business rules through isolated testing
Szymon Fiedler
Latest blog posts
- Ingress is not the owner of the invariant
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- The timezone bug that hid in plain sight for months
- Stop using DateTime in 2026 (unless you work for UNESCO)
- Rewrite with Confidence: Validating Business Rules Through Isolated Testing