@GetMapping(params = "show=all")
    public Namespace getNamespace(@RequestParam("namespaceId") String namespaceId) throws NacosException {
        return namespaceOperationService.getNamespace(namespaceId);
    }
@Test
    void testGetNamespaceByNamespaceId() throws Exception {
        Namespace namespace = new Namespace("", "public", "", 0, 0, 0);
        when(namespaceOperationService.getNamespace("")).thenReturn(namespace);
        assertEquals(namespace, namespaceController.getNamespace(""));
    }