package handler import ( "bytes" "net/http" "net/http/httptest" "testing" ) func TestProfileHandler_Update_InvalidBody(t *testing.T) { req := httptest.NewRequest("PUT", "/profile", bytes.NewBufferString("not json")) rr := httptest.NewRecorder() h := &ProfileHandler{userRepo: nil} h.Update(rr, req) if rr.Code != http.StatusBadRequest { t.Errorf("expected 400, got %d", rr.Code) } }