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e2fa9ff140
Parallelize the SSH integration tests across OS targets and reduce per-container overhead: - CI: use GitHub Actions matrix strategy to run all 4 OS containers (ubuntu:focal, ubuntu:jammy, ubuntu:noble, alpine:latest) in parallel instead of sequentially (~4x wall-clock improvement) - Makefile: run docker builds in parallel for local dev too - Dockerfile: consolidate ~20 separate RUN commands into 5 (one per test phase), eliminating Docker layer overhead. Combine test binary invocations where no state mutation is needed between them. Fix a bug where TestDoDropPrivileges was silently not being run (was passed as a second positional arg to -test.run instead of using regex alternation). - TestMain: replace tail -F + 2s sleep with synchronous log read, eliminating 2s overhead per test binary invocation. Set debugTest once in TestMain instead of redundantly in each test function. - session.read(): close channel on EOF so non-shell tests return immediately instead of waiting for the 1s silence timeout. Updates #19244 Change-Id: I2cc8588964fbce0dd7b654fb94e7ff33440b8584 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
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