ci: run tests in parallel to speedup the ci

Author: art049

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
         with:
           extra_args: --all-files
 
-  test-codspeed:
+  os-test-codspeed:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
@@ -68,16 +68,34 @@ jobs:
       - name: Check divan_compat MSRV
         run: cargo msrv --path crates/divan_compat verify -- cargo check --all-features --config codspeed=true
 
-  tests:
+  tests-without-cargo-codspeed:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: true
       - uses: moonrepo/setup-rust@v1
+        with:
+          bins: cargo-nextest
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - run: cargo nextest run -exclude cargo-codspeed
+
+  test-cargo-codspeed:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        partition: [1, 2, 3, 4, 5]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+      - uses: moonrepo/setup-rust@v1
+        with:
+          bins: cargo-nextest
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - run: cargo test --all
+      - run: cargo nextest run -p cargo-codspeed --partition count:${{ matrix.partition }}/5
 
   compat-integration-test-instrumentation:
     runs-on: ubuntu-latest
@@ -176,9 +194,10 @@ jobs:
     if: always()
     needs:
       - lint
-      - test-codspeed
+      - os-test-codspeed
+      - tests-without-cargo-codspeed
+      - test-cargo-codspeed
       - msrv-check
-      - tests
       - compat-integration-test-instrumentation
       - compat-integration-test-walltime
       - musl-build-check