Attempt to restore coverage in CI

.github/workflows/coverage.yml

@@ -0,0 +1,44 @@
+on:
+  push:
+    branches:
+      - "**" # target all branches
+  pull_request:
+    branches:
+      - master
+
+name: Code Coverage
+
+env:
+  # We partition coverage tests into multiple parts to avoid filling diskspace in a single runner
+  PARTITIONS_COUNT: 8
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        # This range spans from `0` to `PARTITIONS_COUNT - 1`, where `PARTITIONS_COUNT` is the number of partitions (defined in env var above)
+        partition: [0, 1, 2, 3, 4, 5, 6, 7]
+
+    steps:
+      - name: Install dependencies
+        run: sudo apt-get install -yqq build-essential python3 python3-toml
+      - uses: actions/checkout@v1
+      - name: Install rust
+        run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly-2023-11-01
+      - name: Run cargo clean
+        run: cargo clean
+      - name: Install grcov from cargo
+        run: cargo install grcov
+
+      - name: Run coverage tests
+        run: python3 build-tools/workspace-partition.py ${{ env.PARTITIONS_COUNT }} ${{ matrix.partition }} | xargs -I {} sh -c 'CARGO_INCREMENTAL=0 RUST_BACKTRACE=full RUST_LOG=debug RUSTFLAGS="-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off" RUSTDOCFLAGS="-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off" RUSTUP_TOOLCHAIN=nightly-2023-11-01 cargo test'
+
+      - name: Collect coverage data with grcov
+        run: grcov . --source-dir . --output-type lcov --branch --ignore-not-existing --binary-path ./target/debug/ -o grcov-report-${{ matrix.partition }}
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: code-coverage-report-${{ matrix.partition }}
+          path: grcov-report-${{ matrix.partition }}

.github/workflows/loom.yml

@@ -18,18 +18,20 @@ jobs:
   test_loom:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout repository and submodules
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
       - name: Update local dependency repositories
         run: sudo apt-get update
       - name: Install dependencies
         run: sudo apt-get install -yqq --no-install-recommends build-essential python3 python3-toml podman build-essential pkg-config libssl-dev
       - name: Install rust deps
         run: sudo apt-get install -yqq build-essential pkg-config libssl-dev
-      - uses: actions/checkout@v2
+
       - name: Install rust
         run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain $(python3 ./build-tools/rust-version-extractor/rust-version-extractor.py)
-      - name: Checkout repository and submodules
-        uses: actions/checkout@v2
-        with:
-          submodules: recursive
+
       - name: Run permutation tests
         run: cargo test --tests --release -p storage -p chainstate-storage -p storage-lmdb -p storage-inmemory