如何使用@testing-library/react测试ant设计日期选择器？

Question

我在一个组件中有两个ant设计date pickers。我正在尝试更改和测试日期选择器的值，但在测试环境dom中找不到日历输入。

日期选取器组件

import { DatePicker, Form } from "antd";
import React, { Component } from "react";

import moment from "moment";

class DatePickers extends Component {
  constructor(props) {
    super(props);
    this.state = {
      startDate: moment().subtract(1, "month"),
      startDateError: "",
      endDate: moment(),
      endDateError: "",
    };
  }

  onStartDateChange = (date) => {
    this.setState({
      startDate: date,
      startDateError: date ? "" : "Please select start date",
    });
  };

  onEndDateChange = (date) => {
    this.setState({
      endDate: date,
      endDateError: date ? "" : "Please select end date",
    });
  };

  render() {
    const { endDate, endDateError, startDate, startDateError } = this.state;

    return (
      <React.Fragment>
        <Form.Item
          validateStatus={startDateError ? "error" : ""}
          help={startDateError}
          htmlFor="startDate"
          label="Date From"
        >
          <DatePicker
            id="startDate"
            placeholder="Select Start Date"
            allowClear={false}
            onChange={this.onStartDateChange}
            defaultPickerValue={startDate}
            defaultValue={startDate}
            format="DD-MM-YYYY"
          />
        </Form.Item>
        <Form.Item
          validateStatus={endDateError ? "error" : ""}
          help={endDateError}
          htmlFor="endDate"
          label="To"
        >
          <DatePicker
            id="endDate"
            placeholder="Select End Date"
            allowClear={false}
            onChange={this.onEndDateChange}
            defaultPickerValue={endDate}
            defaultValue={endDate}
            format="DD-MM-YYYY"
          />
        </Form.Item>
      </React.Fragment>
    );
  }
}


export default DatePickers;

使用@ Test -library/react测试用例

import { render, screen, waitFor } from "@testing-library/react";
import userEvent from "@testing-library/user-event";

test("date input value validation", async () => {
  const { container } = render(<DatePickers />);

  const startDateNode = screen.getByPlaceholderText(/select start date/i);
  const endDateNode = screen.getByPlaceholderText(/select end date/i);

  userEvent.click(startDateNode);

  const calendarInput = container.querySelector("ant-calendar-input");
  await userEvent.type(calendarInput, "");

  // assert
  expect(screen.getByText("Please select by start date")).toBeInTheDocument();
});

测试用例失败并抛出错误

console.error node_modules/jest-environment-jsdom-fourteen/node_modules/jsdom/lib/jsdom/virtual-console.js:29
      Error: Not implemented: navigation (except hash changes)

版本：

"react" : "16.10.1",
"antd": "3.25.1",
"@testing-library/jest-dom": "5.7.0",
"@testing-library/react": "10.0.4",
"@testing-library/user-event": "10.1.2"

有什么解决方案可以断言这一点吗？

Answer 1

我也遇到了与antd v4完全相同的问题。上面的解决方案是恰当的，并且它是有效的。我在Form.Item中使用多个日期选择器时遇到了一些问题，如果我们对日期选择器进行了自定义验证，请确保正确设置了日期格式。

    const startDate = screen.getByTestId("start-date");
    fireEvent.mouseDown(startDate);
    fireEvent.change(startDate, { target: { value: "10-12-2020" } });
    fireEvent.click(document.querySelectorAll(".ant-picker-cell-selected")[0]);

当设置日期时，根据您的验证，确保值的格式正确，如果不使用moment，还要确保所有日期字符串都设置为您正在使用的任何库。我正在使用dayjs，并且有一个时刻对象在扰乱其中的一个日期。我花了几个小时才弄明白。希望能有所帮助。

    const endDate = screen.getByTestId("end-date");
    fireEvent.mouseDown(endDate);
    fireEvent.change(endDate, { target: { value: "10-25-2020" } });
    fireEvent.click(document.querySelectorAll(".ant-picker-cell-selected")[1]);

Answer 2

此错误似乎与日期选择器测试问题无关：https://github.com/jsdom/jsdom/issues/2112

不管怎样，这就是我用RTL测试Ant Design日期选择器的方法：

组件

<Form.Item colon={false} label={t('searchFields.creationDate.label')} name="creationDateRange">
  <RangePicker data-testid="creationDate" />
</Form.Item>

测试

[...]
rtl = render(...);
[...]

// grab the input
const creationDateFromInput = rtl.getByTestId('creationDate').querySelectorAll('input')[0];
// mouseDown opens the calendar popup, set focus on the input
fireEvent.mouseDown(creationDateFromInput);
// type date in input
fireEvent.change(creationDateFromInput, { target: { value: '2020-01-15' } });
// now calendar popup is opened and 2020-01-15 cell is selected, just click on it
fireEvent.click(document.querySelector('.ant-picker-cell-selected'));

// now form field is correclty set

我试图让它更具可读性，并避免使用我不太喜欢的document.querySelector部分，但我找不到其他解决方案。这当然是可以改进的。

祝好运