Add coverage badge (#1)

* Add coverage badge

* Fix coverage badge action

* Fix coverage badge action

* Fix coverage badge action

* Fix coverage badge action

* Fix coverage badge action

* chore: Updated coverage badge.

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

.github/workflows/coverage-badge.yml

@@ -0,0 +1,59 @@
+name: Test
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Update coverage badge
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.head_ref }}
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.18
+
+      - uses: actions/cache@v3
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Run Test
+        run: |
+          go test -v ./... -covermode=count -coverprofile=coverage.out
+          go tool cover -func=coverage.out -o=coverage.out
+
+      - name: Go Coverage Badge  # Pass the `coverage.out` output to this action
+        uses: tj-actions/coverage-badge-go@v2
+        with:
+          filename: coverage.out
+
+      - name: Verify Changed files
+        uses: tj-actions/verify-changed-files@v12
+        id: verify-changed-files
+        with:
+          files: README.md
+
+      - name: Commit changes
+        if: steps.verify-changed-files.outputs.files_changed == 'true'
+        run: |
+          git config --local user.email "github-actions[bot]@users.noreply.github.com"
+          git config --local user.name "github-actions[bot]"
+          git add README.md
+          git commit -m "chore: Updated coverage badge."
+
+      - name: Push changes
+        if: steps.verify-changed-files.outputs.files_changed == 'true'
+        uses: ad-m/github-push-action@master
+        with:
+          branch: ${{ github.head_ref }}

README.md

@@ -1,4 +1,5 @@
 
+![Coverage](https://img.shields.io/badge/Coverage-58.8%25-yellow)
 <!-- TOC -->
   * [Overview](#overview)
     * [Requirements](#requirements)