~/talk

Are Your Tests Slowing You Down?

Talkat GOTO Copenhagen 2025 · 2025-09-29..10-03· [testing]
slides:none on file

Demos show IDE code generation and JetBrains AI producing unit tests but with nondeterministic results; AI is useful for test data and edge cases but often slower than deterministic live templates. Using a remote build cache cuts a Spring Boot build from ~20 minutes to ~3 minutes. Predictive test selection runs under a third of tests by ML. Test distribution shards tests across agents to parallelize runs. Build scans plus AI grouping surface root causes and quantify flaky tests for triage.

AI-written summary · about

  1. 0:00Intro
  2. 2:46Agenda
  3. 3:14Demo
  4. 10:081. Writing tests takes time continued
  5. 14:582. Troubleshooting takes time
  6. 28:423. Running tests takes time
  7. 38:40Write better tests
  8. 40:45Summary
  9. 42:42Outro
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