我已经尽可能简化了 CodeSandbox 来重现我的问题。您可以在 CodeSandbox 中看到失败的测试正在运行。
在我的示例中,我有一个名为的组件MyCheckbox
,它只是 material-ui 的包装器Checkbox
。它需要一个data
只是一个数组的道具。如果数组中有东西,则复选框获取,opacity : 1
否则获取opacity : 0
import React from "react";
import "./styles.css";
import { Checkbox, makeStyles } from "@material-ui/core";
const useStyles = makeStyles({
checkboxHiddenStyle: {
opacity: 0
}
});
export default function MyCheckbox(props) {
const styles = useStyles(props);
return (
<div>
<Checkbox
{...props}
className={props.data.length === 0 && styles.checkboxHiddenStyle}
/>
</div>
);
}
MyCheckbox
我创建了两个in实例MyCheckboxesInUse
,一个可见,另一个不可见。
import React from "react";
import MyCheckbox from "./MyCheckbox";
import "./styles.css";
export default function MyCheckboxesInUse() {
const arrayWithNothing = [];
const arrayWithSomething = [1];
return (
<div className="App">
<h1>Hidden Checkbox</h1>
<MyCheckbox data={arrayWithNothing} />
<h1>Visible Checkbox</h1>
<MyCheckbox data={arrayWithSomething} />
</div>
);
}
....在浏览器中导致以下结果
然后我有一个简单的测试,检查第一个复选框是隐藏的,第二个是可见的
import React from "react";
import Enzyme, { mount } from "enzyme";
import Adapter from "enzyme-adapter-react-16";
import "@testing-library/jest-dom";
import MyCheckboxesInUse from "./MyCheckboxesInUse";
import MyCheckbox from "./MyCheckbox";
Enzyme.configure({ adapter: new Adapter() });
test("Check that one checkbox is hidden and the other is visible", () => {
const wrapper = mount(<MyCheckboxesInUse />);
const checkboxes = wrapper.find(MyCheckbox).find('input[type="checkbox"]');
expect(checkboxes).toHaveLength(2);
expect(checkboxes.at(0).getDOMNode()).not.toBeVisible();
//This checkbox is in fact visible but the following test step is failing ??
expect(checkboxes.at(1).getDOMNode()).toBeVisible();
});
即使第二个复选框清晰可见,测试也会失败并出现以下错误。这是一个错误jest
还是jest-dom
?
expect(element).toBeVisible()
Received element is not visible:
<input class="PrivateSwitchBase-input-5" data-indeterminate="false" type="checkbox" value="" />