Twister: A Test Utility for Contributors
summary
Twister is a Python test runner that scans the Zephyr code base for YAML-marked TestCases and samples, builds binaries, flashes devices and captures serial output; it supports hardware map driven parallel device runs, quarantine mode to skip flaky combos, and an integration flag to limit platforms for fast feedback. Reports land in twister-out as JSON/XML, and Twister itself is exercised under scripts/test/twister via pytest. Useful options include parallel jobs, no-clean incremental builds, and an only-failed retry to speed validation.
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chapters (18)
- 0:00Start
- 0:40Summary
- 3:13How to Run Twister
- 4:06Problem Statement
- 5:20Adding Tests/Samples to Zephyr
- 6:11Testcase YAML Structure
- 7:37Harness Configuration
- 8:34Fixtures
- 9:31Integration Mode
- 10:37Quarantine
- 11:42HW testing in Zephyr
- 14:49Running Tests on Multiple HW Devices (Contd.)
- 15:21Running Twister on Platforms out of Zephyr tree
- 16:11Twister Reporting
- 17:18Performance Tuning
- 19:05Difference between Samples & Tests
- 20:40Testing Twister Tool
- 21:51Resources
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