Test

Author: PhilippMatthes

.github/workflows/coverage.yaml

@@ -15,26 +15,28 @@ jobs:
         ports:
           - 2375:2375
     steps:
-      - name: Checkout code
+      - name: Checkout base commit
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+      - name: Run tests on base commit and calculate previous coverage
+        run: |
+          POSTGRES_CONTAINER=1 VERNEMQ_CONTAINER=1 go test -v -coverpkg=./internal/... -coverprofile=base_profile.cov ./internal/...
+          PREVIOUS_COVERAGE=$(go tool cover -func base_profile.cov | grep total | awk '{print $3}' | tr -d '%')
+          echo "PREVIOUS_COVERAGE=$PREVIOUS_COVERAGE" >> $GITHUB_ENV
+      - name: Checkout PR code
         uses: actions/checkout@v4
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
           go-version: 1.24.2
       - name: Run tests and calculate coverage
         run: |
-          POSTGRES_CONTAINER=1 VERNEMQ_CONTAINER=1 go test -v -coverpkg=./... -coverprofile=profile.cov ./...
-          CURRENT_COVERAGE=$(go tool cover -func profile.cov | grep total | awk '{print $3}' | tr -d '%')
-          echo "CURRENT_COVERAGE=$CURRENT_COVERAGE" >> $GITHUB_ENV
-          if [ -f previous_coverage.txt ]; then
-            PREVIOUS_COVERAGE=$(cat previous_coverage.txt)
-          else
-            PREVIOUS_COVERAGE=0
-          fi
-          echo "PREVIOUS_COVERAGE=$PREVIOUS_COVERAGE" >> $GITHUB_ENV
+          POSTGRES_CONTAINER=1 VERNEMQ_CONTAINER=1 go test -v -coverpkg=./internal/... -coverprofile=pr_profile.cov ./internal/...
+          CURRENT_COVERAGE=$(go tool cover -func pr_profile.cov | grep total | awk '{print $3}' | tr -d '%')
           CHANGE=$(echo "$CURRENT_COVERAGE - $PREVIOUS_COVERAGE" | bc)
+          echo "CURRENT_COVERAGE=$CURRENT_COVERAGE" >> $GITHUB_ENV
           echo "CHANGE=$CHANGE" >> $GITHUB_ENV
-          echo "$CURRENT_COVERAGE" > previous_coverage.txt
       - name: Delete old coverage comments
         uses: actions/github-script@v7
         with:
@@ -63,7 +65,7 @@ jobs:
             const change = process.env.CHANGE || 'unknown';
             const commentBody = `
               <!-- coverage-comment -->
-              Coverage: **${currentCoverage}%** (${change >= 0 ? '+' : ''}${change}%)
+              `internal/` coverage: **${currentCoverage}%** (${change >= 0 ? '+' : ''}${change}%)
             `;
             await github.rest.issues.createComment({
               issue_number: context.issue.number,