Use Go 1.22 (#2)

Use Go 1.22 and add GitHub action

.github/workflows/go.yml

@@ -0,0 +1,29 @@
+name: Go
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: "1.22"
+
+      - name: Test
+        run: |
+          go install gotest.tools/gotestsum@latest
+          gotestsum --junitfile test-reports/junit.xml -- -timeout 1m -count=1 -coverprofile=cp.out -race -v ./...
+
+      - name: Test Summary
+        uses: test-summary/action@v2
+        with:
+          paths: test-reports/junit.xml
+        if: always()

cache_test.go

@@ -30,17 +30,17 @@ func init() {
 func TestLoadLocation_SafeForConcurrentAccess(t *testing.T) {
 	wg := new(sync.WaitGroup)
 
-	for i := 0; i < 100; i++ {
+	for range 100 {
 		for _, locName := range testLocNames {
 			wg.Add(1)
 
-			go func(name string) {
+			go func() {
 				defer wg.Done()
 
-				if _, err := locache.LoadLocation(name); err != nil {
+				if _, err := locache.LoadLocation(locName); err != nil {
 					panic(err)
 				}
-			}(locName)
+			}()
 		}
 	}
 
@@ -99,7 +99,7 @@ func loadIANATzNamesFromZip(zipfile string) []string {
 
 	ianaNames := make([]string, n)
 
-	for i := 0; i < n; i++ {
+	for i := range n {
 		getn(4, buf)
 
 		namelen := getn(2, buf[28:])
@@ -136,7 +136,7 @@ func getn(n int, b []byte) (result int) {
 		return 0
 	}
 
-	for i := 0; i < n; i++ {
+	for i := range n {
 		result |= int(b[i]) << (i * 8)
 	}
 	return result

go.mod

@@ -1,3 +1,3 @@
 module github.com/esimonov/locache
 
-go 1.21
+go 1.22