text: const mockDeleteItem = jest.fn();
  jest.mock("@aws-sdk/client-dynamodb/commands/DeleteItemCommand", () => ({
    DynamoDB: function DynamoDB() {
      this.DeleteItemCommand = mockDeleteItem;
    },
  }));
  const { params, run } = require("../../dynamodb/ddb_deleteitem");
  
  //test function
  test("has to mock db#deleteItem", async (done) => {
    await run();
    expect(mockDeleteItem).toHaveBeenCalled;
    done();
  });
  