Add coverage report

Signed-off-by: boot-go <[email protected]>

.github/workflows/action.yml

@@ -25,3 +25,24 @@ jobs:
 
       - name: Test
         run: go test -cpu 2 -timeout 2m -race -v ./...
+
+      - name: Test coverage
+        run: go test -v -covermode=count -coverprofile=coverage.out ./...
+
+      - name: Tool cover
+        run: go tool cover -func=coverage.out -o=coverage.out
+
+      - name: Obtain coverage
+        run: echo "COVERAGE=$(grep -e 'total' coverage.out | awk '{print $3;}')" >> $GITHUB_ENV
+
+      - name: Create coverage badge
+        uses: schneegans/[email protected]
+        with:
+          auth: ${{ secrets.GIST_SECRET }}
+          gistID: c77b22000b3e249510dfb4542847c708
+          filename: test_coverage.json
+          label: "test coverage"
+          message: ${{ env.COVERAGE }}
+          valColorRange: ${{ env.COVERAGE }}
+          maxColorRange: 100
+          minColorRange: 0

README.md

@@ -3,6 +3,7 @@
     <div align="center">
         <a href="https://github.com/boot-go/boot/tags"><img alt="Commit tag" src="https://img.shields.io/github/v/tag/boot-go/boot"></a>
         <a href="https://github.com/boot-go/boot/actions/workflows/action.yml"><img src="https://github.com/boot-go/boot/actions/workflows/action.yml/badge.svg?branch=main" alt="github action"></a>
+        <a href="https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/schneegans/2ab8f1d386f13aaebccbd87dac94068d/raw/test_coverage.json"><img src="https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/boot-go/c77b22000b3e249510dfb4542847c708/raw/test_coverage.json" alt="test coverage"></a>
         <a href="https://goreportcard.com/report/github.com/boot-go/boot"><img src="https://goreportcard.com/badge/github.com/boot-go/boot" alt="go report"></a>
         <a href="https://opensource.org/licenses/MIT"><img src="https://img.shields.io/badge/license-MIT-blue.svg" alt="License: MIT"></a>
     </div>