✨ feat: add Delete method to Store struct in session middleware

docs/api/middleware/session.md

@@ -16,6 +16,7 @@ This middleware uses our [Storage](https://github.com/gofiber/storage) package t
 func New(config ...Config) *Store
 func (s *Store) RegisterType(i interface{})
 func (s *Store) Get(c *fiber.Ctx) (*Session, error)
+func (s *Store) Delete(id string) error
 func (s *Store) Reset() error
 
 func (s *Session) Get(key string) interface{}

middleware/session/session.go

@@ -276,3 +276,11 @@ func (s *Session) delSession() {
 		fasthttp.ReleaseCookie(fcookie)
 	}
 }
+
+// Delete deletes a session by its id
+func (s *Store) Delete(id string) error {
+	if len(id) == 0 {
+		return fmt.Errorf("session id cannot be empty")
+	}
+	return s.Storage.Delete(id)
+}

middleware/session/store_test.go

@@ -85,3 +85,41 @@ func TestStore_Get(t *testing.T) {
 		utils.AssertEqual(t, unexpectedID, acquiredSession.ID())
 	})
 }
+
+// go test -run TestStore_Delete
+func TestStore_Delete(t *testing.T) {
+	t.Parallel()
+	// fiber instance
+	app := fiber.New()
+	// session store
+	store := New()
+
+	// fiber context
+	ctx := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(ctx)
+
+	// Create a new session
+	session, err := store.Get(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Save the session ID
+	sessionID := session.ID()
+
+	// Delete the session
+	if err := store.Delete(sessionID); err != nil {
+		t.Fatal(err)
+	}
+
+	// Try to get the session again
+	session, err = store.Get(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// The session ID should be different now, because the old session was deleted
+	if session.ID() == sessionID {
+		t.Errorf("The session was not deleted, the session ID is still the same")
+	}
+}