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我正在从使用切换enzyme到react-testing-library测试我的组件。

我有一个简单的组件CustomModal，它的作用很像 from 的包装Modal器reactstrap。我正在尝试测试我是否CustomModal包含它应该包含的子元素。

从这篇文章和这篇文章中得到启发，我正在data-testid为我的孩子添加属性，然后我正在使用getByTestIdand queryByTestId。但是，由于某种原因，我的查询没有找到据我所知存在的子节点。

我在测试设置中做错了什么，还是我误解了react-testing-library应该如何使用？

可以在此 CodeSandbox 中找到基本代码以及测试（失败）： 编辑 react-testing-library queryByTestId

我的基本CustomModal组件如下所示：

/*
 * src/components/CustomModal/index.js
 */

import React from "react";
import { Button, Modal, ModalHeader, ModalBody, ModalFooter } from "reactstrap";

const getSanitizedModalProps = props => {
  let modalProps = { ...props };
  delete modalProps.onConfirm;
  delete modalProps.onCancel;
  delete modalProps.headerText;
  delete modalProps.children;
  modalProps.isOpen = modalProps.isOpen === true;
  return modalProps;
};

export default props => {
  return (
    <Modal data-testid="modal" {...getSanitizedModalProps(props)}>
      <ModalHeader data-testid="modal-header">{props.headerText}</ModalHeader>
      <ModalBody data-testid="modal-body">{props.children}</ModalBody>
      <ModalFooter data-testid="modal-footer">
        <Button data-testid="confirm-button" onClick={props.onConfirm}>
          Confirm
        </Button>
        <Button data-testid="cancel-button" onClick={props.onCancel}>
          Cancel
        </Button>
      </ModalFooter>
    </Modal>
  );
};

我的测试文件如下所示：

/*
 * src/components/CustomModal/CustomModal.test.js
 */

import React from "react";
import { render } from "react-testing-library";
import CustomModal from "./index";

const TEST_IDS = {
  modal: "modal",
  header: "modal-header",
  body: "modal-body",
  footer: "modal-footer",
  cancel: "cancel-button",
  confirm: "confirm-button"
};

describe("<Modal />", () => {
  const headerText = "hello world";
  it("renders all of the children", () => {
    const { queryByTestId } = render(<CustomModal headerText={headerText} />);

    // The following assertions all fail
    expect(queryByTestId(TEST_IDS.modal)).toBeTruthy(); 
    expect(queryByTestId(TEST_IDS.header)).toBeTruthy();
    expect(queryByTestId(TEST_IDS.body)).toBeTruthy();
    expect(queryByTestId(TEST_IDS.footer)).toBeTruthy();
    expect(queryByTestId(TEST_IDS.cancel)).toBeTruthy();
    expect(queryByTestId(TEST_IDS.confirm)).toBeTruthy();
  });
});
4

1 回答 1

1

您的模式已关闭，您需要传递isOpen给它：

render(<CustomModal headerText={headerText} isOpen />);
于 2019-03-08T08:40:01.840 回答