CI: shard tests across 4 runners; heavy tests on main and nightly (#350)

* CI: build tests once and run them in 4 nextest shards

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

* CI: quote the shard arguments

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

* CI: extract the test archive into the checkout; skip the heaviest tests on pull requests

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

* Docs: CI shards and the tests pull requests skip

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

---------

Co-authored-by: Claude Opus 5.5 <[email protected]>
This commit is contained in:
bherbruckandClaude Opus 5.5 authored and GitHub committed 2026-10-12 14:30:35 -04:00
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@@ -1,9 +1,15 @@
# Fast checks always run; native builds run for code/CI changes.
# Tests are built once and run in 4 shards. A few heavy tests (see .config/nextest.toml) are
# skipped on pull requests and run on pushes to main and nightly.
# Cross-compilation is opt-in through Run workflow; release builds remain in release.yml.
name: CI
on:
pull_request:
push:
branches: [main]
schedule:
- cron: "17 6 * * *"
workflow_dispatch:
inputs:
cross_compile:
@@ -16,7 +22,8 @@ permissions:
concurrency:
group: ci-${{ github.ref }}
cancel-in-progress: true
# Every push to main gets its full run; a new PR push replaces the old run.
cancel-in-progress: ${{ github.event_name == 'pull_request' }}
env:
CARGO_TERM_COLOR: always
@@ -39,7 +46,7 @@ jobs:
HEAD_SHA: ${{ github.event.pull_request.head.sha }}
run: |
native=false
if [ "$EVENT_NAME" = workflow_dispatch ]; then
if [ "$EVENT_NAME" != pull_request ]; then
native=true
else
# Compare both old and new paths of renames; unknown paths run native checks.
@@ -92,12 +99,12 @@ jobs:
key: native-clippy
- run: cargo clippy --workspace --all-targets --profile ci --locked -- -D warnings
tests:
name: Native Linux tests
build-tests:
name: Build tests
needs: changes
if: needs.changes.outputs.native == 'true'
runs-on: ubuntu-24.04
timeout-minutes: 90
timeout-minutes: 45
env:
CARGO_INCREMENTAL: "0"
RUSTC_WRAPPER: sccache
@@ -113,15 +120,82 @@ jobs:
uses: mozilla-actions/sccache-action@fc920bf0ec8de6ee65d409111f7ec508035751ba # v0.0.11
with:
version: v0.16.0
- name: Compile tests
run: cargo test --workspace --profile ci --locked --no-run
- name: Run tests
# Every test binary at once (cargo test runs them one after another).
run: cargo xtask test --locked
- uses: taiki-e/install-action@1168f6810a3cb30a3514bf5756a3b7f0422c6df8 # v2.87.28
with:
tool: cargo-nextest
- name: Compile tests into a nextest archive
run: cargo nextest archive --workspace --cargo-profile ci --locked --archive-file tests.tar.zst
- uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
with:
name: nextest-archive
path: tests.tar.zst
retention-days: 1
compression-level: 0
- name: Compiler cache statistics
if: always()
run: sccache --show-stats
tests:
name: Native Linux tests (${{ matrix.shard }}/4)
needs: build-tests
runs-on: ubuntu-24.04
timeout-minutes: 60
strategy:
fail-fast: false
matrix:
shard: [1, 2, 3, 4]
steps:
- uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
- uses: taiki-e/install-action@1168f6810a3cb30a3514bf5756a3b7f0422c6df8 # v2.87.28
with:
tool: cargo-nextest
- uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
with:
name: nextest-archive
- name: Run tests
env:
EVENT_NAME: ${{ github.event_name }}
SHARD: ${{ matrix.shard }}
run: |
# Pull requests skip the heavy tests (default-filter in .config/nextest.toml).
all=()
if [ "$EVENT_NAME" != pull_request ]; then all=(--ignore-default-filter); fi
# Extract into ./target: tests that run a built binary (env!("CARGO_BIN_EXE_*")) have
# the build job's path, which is the same checkout path here.
cargo nextest run --archive-file tests.tar.zst --workspace-remap . --extract-to . --extract-overwrite \
--profile ci --partition "slice:$SHARD/4" "${all[@]}"
- name: Upload test timings
if: always()
uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
with:
name: junit-${{ matrix.shard }}
path: target/nextest/ci/junit.xml
retention-days: 7
doc-tests:
name: Doc tests
needs: changes
if: needs.changes.outputs.native == 'true'
runs-on: ubuntu-24.04
timeout-minutes: 45
env:
CARGO_INCREMENTAL: "0"
RUSTC_WRAPPER: sccache
SCCACHE_GHA_ENABLED: "true"
SCCACHE_IGNORE_SERVER_IO_ERROR: "1"
steps:
- uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
- uses: dtolnay/rust-toolchain@stable
- uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
with:
key: doc-tests
- name: Set up compiler cache
uses: mozilla-actions/sccache-action@fc920bf0ec8de6ee65d409111f7ec508035751ba # v0.0.11
with:
version: v0.16.0
# nextest does not run doc tests.
- run: cargo test --workspace --profile ci --locked --doc
oracle:
name: Reference tests
needs: changes
@@ -156,7 +230,7 @@ jobs:
# Preserve the existing check name for branch protection, including docs-only PRs.
ci:
needs: [changes, checks, clippy, tests, oracle]
needs: [changes, checks, clippy, build-tests, tests, doc-tests, oracle]
if: always()
runs-on: ubuntu-24.04
steps:
@@ -166,14 +240,18 @@ jobs:
CHECKS: ${{ needs.checks.result }}
NATIVE: ${{ needs.changes.outputs.native }}
CLIPPY: ${{ needs.clippy.result }}
BUILD: ${{ needs.build-tests.result }}
TESTS: ${{ needs.tests.result }}
DOCS: ${{ needs.doc-tests.result }}
ORACLE: ${{ needs.oracle.result }}
run: |
test "$CHANGES" = success
test "$CHECKS" = success
if [ "$NATIVE" = true ]; then
test "$CLIPPY" = success
test "$BUILD" = success
test "$TESTS" = success
test "$DOCS" = success
test "$ORACLE" = success
fi