chore: Generate test coverage reports (#2299)

Author: erezrokah

.github/workflows/gen_coverage_report.yml

@@ -0,0 +1,43 @@
+name: Generate Coverage Report
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 6 * * 1"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: write
+
+jobs:
+  gen-coverage-report:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          token: ${{ secrets.GH_CQ_BOT }}
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v6
+        with:
+          go-version: "1.25"
+          cache: false
+      - name: Generate Coverage Report
+        run: make coverage
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v7
+        with:
+          # required so the PR triggers workflow runs
+          token: ${{ secrets.GH_CQ_BOT }}
+          branch: chore/update_coverage_report
+          base: main
+          title: "chore: Update coverage report"
+          commit-message: "chore: Update coverage report"
+          body: This PR was created by a scheduled workflow to update the coverage report
+          author: cq-bot <[email protected]>
+          labels: automerge

.github/workflows/lint_markdown.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Vale
         uses: errata-ai/vale-action@dcded780f1ff68e2558e802a165a484a4a3e2fb8
         with:
-          vale_flags: "--glob=!{docs/testdata/*,CHANGELOG.md,.github/styles/proselint/README.md,examples/simple_plugin/docs/*.md}"
+          vale_flags: "--glob=!{docs/testdata/*,CHANGELOG.md,.github/styles/proselint/README.md,examples/simple_plugin/docs/*.md,coverage.md}"
           filter_mode: nofilter
           version: '3.0.3'
         env:
@@ -39,4 +39,4 @@ jobs:
         with:
           files: .
           config_file: .markdownlint.yaml
-          ignore_files: "{docs/testdata/*,CHANGELOG.md,examples/simple_plugin/docs/*.md}"
+          ignore_files: "{docs/testdata/*,CHANGELOG.md,examples/simple_plugin/docs/*.md,coverage.md}"

Makefile

@@ -15,3 +15,18 @@ benchmark-ci:
 	go install go.bobheadxi.dev/[email protected]
 	go test -bench . -benchmem ./... -run="^$$" | grep -v 'BenchmarkWriterMemory/' | gobenchdata --json bench.json
 	rm -rf .delta.* && go run scripts/benchmark-delta/main.go bench.json
+
+.PHONY: coverage
+coverage:
+	go test -timeout 15m -coverprofile=coverage.out.tmp ./...
+	cat coverage.out.tmp | grep -vE "MockGen|codegen|mocks" > coverage.out
+	rm coverage.out.tmp
+	echo "| File | Function | Coverage |" > coverage.md
+	echo "| --- | --- | --- |" >> coverage.md
+	go tool cover -func=coverage.out | tail -n +2 | while read line; do \
+		file=$$(echo $$line | awk '{print $$1}'); \
+		func=$$(echo $$line | awk '{print $$2}'); \
+		cov=$$(echo $$line | awk '{print $$3}'); \
+		printf "| %s | %s | %s |\\n" "$$file" "$$func" "$$cov" >> coverage.md; \
+	done
+	rm coverage.out