ci: add multiplatform tests

.github/workflows/test.yml

@@ -5,8 +5,11 @@ permissions:
   pull-requests: write
 jobs:
   test:
-    name: test
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -18,13 +21,38 @@ jobs:
       - name: test
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Needed for GitHub badge storer integration test
-        run: make test
+        run: go test -timeout=60s -race -count=1 -failfast  -shuffle=on ./... -coverprofile=./cover.${{ matrix.os }}.profile -covermode=atomic -coverpkg=./...
+
+      - name: upload cover profile artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: cover.${{ matrix.os }}
+          path: cover.${{ matrix.os }}.profile
+
+  check-coverage:
+    runs-on: ubuntu-latest
+    needs: test
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: download cover.ubuntu-latest
+        uses: actions/download-artifact@v3
+        with:
+          name: cover.ubuntu-latest
 
+      - name: download cover.macos-latest
+        uses: actions/download-artifact@v3
+        with:
+          name: cover.macos-latest
+
       - name: check test coverage
         id: coverage
         uses: vladopajic/go-test-coverage@v2
         with:
           config: ./.github/.testcoverage.yml
+          profile: cover.ubuntu-latest.profile,cover.macos-latest.profile
           git-branch: badges
           git-token: ${{ github.ref_name == 'main' && secrets.GITHUB_TOKEN || '' }}
 

pkg/testcoverage/badgestorer/github_test.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/google/go-github/v56/github"
 	"github.com/stretchr/testify/assert"
+	"golang.org/x/exp/rand"
 
 	. "github.com/vladopajic/go-test-coverage/v2/pkg/testcoverage/badgestorer"
 )
@@ -51,7 +52,9 @@ func Test_Github(t *testing.T) {
 		Owner:      "vladopajic",
 		Repository: "go-test-coverage",
 		Branch:     "badges-integration-test",
-		FileName:   "badge.svg",
+		// random badge name must be used because two tests running from different platforms
+		// in CI can cause race condition if badge has the same name
+		FileName: "badge_" + randString() + ".svg",
 	}
 	s := NewGithub(cfg)
 
@@ -105,3 +108,15 @@ func deleteFile(t *testing.T, cfg Git) {
 	)
 	assert.NoError(t, err)
 }
+
+func randString() string {
+	letterRunes := []rune("abcdefghijklmnopqrstuvwxyz")
+	l := len(letterRunes)
+
+	b := make([]rune, rand.Intn(10))
+	for i := range b {
+		b[i] = letterRunes[rand.Intn(l)]
+	}
+
+	return string(b)
+}