如何在 React with Enzyme 或 React 测试库中测试 Material-UI 的响应式 UI（例如隐藏、网格、断点）

Question

如何测试 Material-UI 中的响应元素？

示例：

import React from "react";
import Hidden from "@material-ui/core/Hidden";

const HideOnMobile = (props) => {
  return <Hidden xsDown>{props.children}</Hidden>;
};

测试用例：

describe(HideOnMobile, () => {
  describe("when screensize is sm", () => {
    it("shows children", () => {});
  });

  describe("when screensize is xs", () => {
    it("hides children", () => {});
  });
});

Answer 1

MUI v5

不幸的是，v4 solution doesn't work for v5。

MUI v4

如here所述，您可以使用主题道具为 MUI 设置大小属性：

import { createMuiTheme, MuiThemeProvider } from "@material-ui/core/styles";

const SizeWrapper = (props) => {
  const theme = createMuiTheme({
    props: { MuiWithWidth: { initialWidth: "sm" } },
  });

  return <MuiThemeProvider theme={theme}>{props.children}</MuiThemeProvider>;
};

例如使用 React 测试库：

describe(HideOnMobile, () => {
  describe("when screensize is sm", () => {
    it("shows children", () => {
      const testMessage = "Test Message";
      render(<HideOnMobile>{testMessage}</HideOnMobile>, { wrapper: SizeWrapper });

      expect(screen.getByText(testMessage)).toBeInTheDocument();
    });
  });
});