feat: adds coverage badge workflow

Author: IAmRadek

.github/workflows/go-coverage.yml

@@ -0,0 +1,49 @@
+name: Coverage
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v5
+
+    - name: Set up Go
+      uses: actions/setup-go@v6
+      with:
+        go-version: 1.24
+        cache: 'true'
+
+    - name: Build
+      run: go install
+
+    - name: Test
+      run: |
+        go test -v -cover ./... -coverprofile coverage.out -coverpkg ./...
+        go tool cover -func coverage.out -o coverage.out  # Replaces coverage.out with the analysis of coverage.out
+
+    - name: Go Coverage Badge
+      uses: tj-actions/coverage-badge-go@v3
+      with:
+        green: 80
+        filename: coverage.out
+
+    - uses: stefanzweifel/git-auto-commit-action@v6
+      id: auto-commit-action
+      with:
+        commit_message: Apply Code Coverage Badge
+        skip_fetch: true
+        skip_checkout: true
+        file_pattern: ./README.md
+
+    - name: Push Changes
+      if: steps.auto-commit-action.outputs.changes_detected == 'true'
+      uses: ad-m/github-push-action@master
+      with:
+        github_token: ${{ github.token }}
+        branch: ${{ github.ref }}

exitplan_test.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"slices"
 	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
 
@@ -165,10 +166,10 @@ func TestOnExitTimeout(t *testing.T) {
 
 	l := exitplan.New()
 
-	called := false
+	called := atomic.Bool{}
 	l.OnExit(func() {
 		time.Sleep(2 * timeout)
-		called = true
+		called.Store(true)
 	}, exitplan.Timeout(timeout))
 
 	go func() {
@@ -186,7 +187,7 @@ func TestOnExitTimeout(t *testing.T) {
 		t.Errorf("expected timeout between %v and %v, got %v", timeout-timeoutJitter, timeout+timeoutJitter, end.Sub(start))
 	}
 
-	if called {
+	if called.Load() {
 		t.Error("callback was called")
 	}
 }