Add code coverage

.deepsource.toml

@@ -1,6 +1,8 @@
 version = 1
 test_patterns = [
   "butane/tests/**",
+  "butane_core/tests/**",
+  "example/tests/**",
 ]
 
 [[analyzers]]
@@ -9,3 +11,6 @@ name = "rust"
   [analyzers.meta]
   msrv = "stable"
 
+[[analyzers]]
+enabled = true
+name = "test-coverage"

.editorconfig

@@ -37,3 +37,6 @@ indent_size = unset
 
 [LICENSE-APACHE.txt]
 indent_size = unset
+
+[deepsource.yml]
+max_line_length = 140

.github/workflows/deepsource.yml

@@ -0,0 +1,80 @@
+# yamllint disable rule:truthy
+# yamllint disable rule:empty-lines
+---
+name: Code Coverage
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+# this allows a subsequently queued workflow run to interrupt previous runs in pull_requests only
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
+jobs:
+  deepsource:
+    name: Test and submit
+    runs-on: ubuntu-22.04
+    defaults:
+      run:
+        shell: bash
+    steps:
+      # The checkout must be the PR 'head' sha for deepsource to work
+      - name: Checkout PR
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Checkout PUSH
+        if: ${{ github.event_name == 'push' }}
+        uses: actions/checkout@v4
+
+      - name: Install Rust nightly
+        uses: dtolnay/rust-toolchain@nightly
+        with:
+          toolchain: nightly
+          components: llvm-tools-preview,rustfmt
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-llvm-cov
+
+      - name: Setup postgres on Linux
+        # Postgresql setup adapted from Diesel CI
+        # Disable ssl as server doesn't have a trusted cert
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y postgresql
+          sudo sed -i "s/scram-sha-256/trust/" /etc/postgresql/14/main/pg_hba.conf
+          sudo cat /etc/postgresql/14/main/pg_hba.conf
+          sudo service postgresql restart && sleep 3
+          echo BUTANE_PG_CONNSTR="host=localhost user=postgres sslmode=disable port=5432" >> $GITHUB_ENV
+
+      - name: Run test suite
+        run: |
+          cargo +nightly llvm-cov test --cobertura --output-path coverage.xml --branch --workspace --no-fail-fast --all-features
+
+      - name: Install deepsource cli
+        run: |
+          RELEASE_ID=$(curl -fsSL https://api.github.com/repos/deepsourcelabs/cli/releases/latest | jq -r '.tag_name')
+          curl -fsSL -o ./deepsource_"${RELEASE_ID//v}"_linux_x86_64.tar.gz \
+            https://github.com/deepsourcelabs/cli/releases/download/"${RELEASE_ID}"/deepsource_"${RELEASE_ID//v}"_linux_x86_64.tar.gz
+          curl -fsSL -o ./ds_checksums.txt \
+            https://github.com/deepsourcelabs/cli/releases/download/"${RELEASE_ID}"/checksums.txt
+          cat ds_checksums.txt | grep deepsource_"${RELEASE_ID//v}"_linux_x86_64.tar.gz > ds-sha256chk.txt
+          sha256sum -c --strict ds-sha256chk.txt
+          tar -xvf deepsource_"${RELEASE_ID//v}"_linux_x86_64.tar.gz deepsource
+          chmod 755 deepsource
+
+      - name: Report test-coverage to DeepSource
+        if: ${{ !env.ACT }}
+        env:
+          DEEPSOURCE_DSN: ${{ secrets.DEEPSOURCE_DSN }}
+        run: |
+          ./deepsource report --analyzer test-coverage --key rust --value-file coverage.xml