Adding upstream version 2.52.6.

Signed-off-by: Daniel Baumann <daniel@debian.org>

middleware/idempotency/locker_test.go

@@ -0,0 +1,59 @@
+package idempotency_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/gofiber/fiber/v2/middleware/idempotency"
+	"github.com/gofiber/fiber/v2/utils"
+)
+
+// go test -run Test_MemoryLock
+func Test_MemoryLock(t *testing.T) {
+	t.Parallel()
+
+	l := idempotency.NewMemoryLock()
+
+	{
+		err := l.Lock("a")
+		utils.AssertEqual(t, nil, err)
+	}
+	{
+		done := make(chan struct{})
+		go func() {
+			defer close(done)
+
+			err := l.Lock("a")
+			utils.AssertEqual(t, nil, err)
+		}()
+
+		select {
+		case <-done:
+			t.Fatal("lock acquired again")
+		case <-time.After(time.Second):
+		}
+	}
+
+	{
+		err := l.Lock("b")
+		utils.AssertEqual(t, nil, err)
+	}
+	{
+		err := l.Unlock("b")
+		utils.AssertEqual(t, nil, err)
+	}
+	{
+		err := l.Lock("b")
+		utils.AssertEqual(t, nil, err)
+	}
+
+	{
+		err := l.Unlock("c")
+		utils.AssertEqual(t, nil, err)
+	}
+
+	{
+		err := l.Lock("d")
+		utils.AssertEqual(t, nil, err)
+	}
+}