使用 react-testing-library 测试 material-ui 数据网格的问题
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【中文标题】使用 react-testing-library 测试 material-ui 数据网格的问题【英文标题】：Problem testing material-ui datagrid with react-testing-library 【发布时间】：2021-04-16 13:31:54 【问题描述】：我想测试我的 material-ui 数据网格的内容，但测试中只呈现了前 3 列（共 8 列）。我可以测试这3列的内容，没问题。 一切都在网络浏览器上正确呈现。
我最好的猜测是，正如这些警告所说，由于渲染数据网格的宽度和高度，但我无法在文档中找到解决方案。
Material-UI: useResizeContainer - The parent of the grid has an empty width.
You need to make sure the container has an intrinsic width.
The grid displays with a width of 0px.
You can find a solution in the docs:
https://material-ui.com/components/data-grid/rendering/#layout
Material-UI: useResizeContainer - The parent of the grid has an empty height.
You need to make sure the container has an intrinsic height.
The grid displays with a height of 0px.
You can find a solution in the docs:
https://material-ui.com/components/data-grid/rendering/#layout
这也可能是由于 mount 函数：（根据 material-ui 文档，您应该使用酶的 mount 函数作为 createMount 函数的参数，但我使用的是 react 17 并且官方酶适配器尚未推出。我尝试使用@wojtekmaj/enzyme-adapter-react-17 但它没有改变任何东西。我目前正在使用来自@testing-library/react 的“渲染”）
const mount = createMount(mount:render)
这是我的组件的一个更简单的版本：
import React from "react";
import DataGrid from '@material-ui/data-grid';
import Button from "@material-ui/core/Button";
const Gridtest = (props) =>
const columns = [
field: 'id', headerName: 'ID', type: 'number',headerAlign: 'left', width: 130 ,
field: 'tenant_id', headerName: 'Tenant ID', type: 'number',headerAlign: 'left', width: 130 ,
field: 'user_reference', headerName: 'Customer user reference', type: 'string',headerAlign: 'left', width: 250 ,
field: 'provider_name', headerName: 'Provider name', type: 'string',headerAlign: 'left', width: 220 ,
field: 'provider_id', headerName: 'Provider ID', type: 'number',headerAlign: 'left', width: 130 ,
field: 'expiration_date', headerName: 'Expiration date', type: 'dateTime',headerAlign: 'left', width: 220 ,
field: 'last_start', headerName: 'Last start date', type: 'dateTime',headerAlign: 'left', width: 130 ,
field: 'Action',
headerName: 'Action',
headerAlign: 'left',
width: 100,
renderCell: (params) =>
return (
<div>
<Button variant="contained" size="small" color="primary" disableRipple
onClick=() => null>
Details
</Button>
</div>
)
,
,
];
const rows = [
"id": "10190",
"tenant_id": "12201",
"user_reference": "Xuser_ref",
"provider_name": "Xprovider",
"provider_id": "122",
"expiration_date": "2020-04-07T17:36:40+02:00",
"last_start": "2020-07-06T17:36:40+02:00"
,
"id": "23541",
"tenant_id": "96542",
"user_reference": "Yuser_ref",
"provider_name": "Yprovider",
"provider_id": "856",
"expiration_date": "2010-07-07T17:36:40+02:00",
"last_start": "2010-09-06T17:36:40+02:00"
]
return(
<main>
<div style= display: 'flex', height: '100%',width: '100%', flexGrow: 1 >
<DataGrid style=height: '100%', width: '100%' autoHeight rows=rows columns=columns pageSize=5 checkboxSelection=false hideFooterSelectedRowCount/>
</div>
</main>
);
export default Gridtest;
我更简单的组件的测试文件（测试成功）：
import screen, render, act, findByTestId from '@testing-library/react'
import React from 'react'
import '@testing-library/jest-dom/extend-expect'
import Gridtest from '../../src/Gridtest'
import createMount from '@material-ui/core/test-utils';
describe('grid test', () =>
const mount = createMount(mount:render)
test('grid render', async () =>
await act(async () =>
mount(
<Gridtest />
);
);
expect(await screen.findByRole('grid')).toBeInTheDocument()
expect(await screen.findAllByRole('columnheader')).toHaveLength(3)
screen.debug(await screen.findByRole('grid'))
)
)
screen.debug(await screen.findByRole('grid')) 返回：
<div
aria-colcount="8"
aria-label="grid"
aria-multiselectable="false"
aria-rowcount="2"
class="MuiDataGrid-root MuiDataGrid-root"
role="grid"
style="width: 0px; height: 175px;"
tabindex="0"
>
<div />
<div
class="MuiDataGrid-mainGridContainer"
>
<div
class="MuiDataGrid-columnsContainer"
style="min-height: 56px; max-height: 56px; line-height: 56px;"
>
<div
aria-rowindex="1"
class="MuiDataGrid-colCellWrapper scroll"
role="row"
style="transform: translate3d(-0px, 0, 0); min-width: 1310px;"
>
<div
aria-colindex="1"
class="MuiDataGrid-colCell MuiDataGrid-colCellSortable MuiDataGrid-colCellNumeric"
data-field="id"
role="columnheader"
style="width: 130px; min-width: 130px; max-width: 130px;"
tabindex="-1"
>
<div
class="MuiDataGrid-colCell-draggable"
draggable="false"
>
<div
class="MuiDataGrid-colCellTitleContainer"
>
<div
aria-label="ID"
class="MuiDataGrid-colCellTitle"
title=""
>
ID
</div>
</div>
</div>
<div
class="MuiDataGrid-columnSeparator"
style="min-height: 56px; opacity: 1;"
>
<svg
aria-hidden="true"
class="MuiSvgIcon-root MuiDataGrid-iconSeparator"
focusable="false"
viewBox="0 0 24 24"
>
<path
d="M11 19V5h2v14z"
/>
</svg>
</div>
</div>
<div
aria-colindex="2"
class="MuiDataGrid-colCell MuiDataGrid-colCellSortable MuiDataGrid-colCellNumeric"
data-field="tenant_id"
role="columnheader"
style="width: 130px; min-width: 130px; max-width: 130px;"
tabindex="-1"
>
<div
class="MuiDataGrid-colCell-draggable"
draggable="false"
>
<div
class="MuiDataGrid-colCellTitleContainer"
>
<div
aria-label="Tenant ID"
class="MuiDataGrid-colCellTitle"
title=""
>
Tenant ID
</div>
</div>
</div>
<div
class="MuiDataGrid-columnSeparator"
style="min-height: 56px; opacity: 1;"
>
<svg
aria-hidden="true"
class="MuiSvgIcon-root MuiDataGrid-iconSeparator"
focusable="false"
viewBox="0 0 24 24"
>
<path
d="M11 19V5h2v14z"
/>
</svg>
</div>
</div>
<div
aria-colindex="3"
class="MuiDataGrid-colCell MuiDataGrid-colCellSortable"
data-field="user_reference"
role="columnheader"
style="width: 250px; min-width: 250px; max-width: 250px;"
tabindex="-1"
>
<div
class="MuiDataGrid-colCell-draggable"
draggable="false"
>
<div
class="MuiDataGrid-colCellTitleContainer"
>
<div
aria-label="Customer user reference"
class="MuiDataGrid-colCellTitle"
title=""
>
Customer user reference
</div>
</div>
</div>
<div
class="MuiDataGrid-columnSeparator"
style="min-height: 56px; opacity: 1;"
>
<svg
aria-hidden="true"
class="MuiSvgIcon-root MuiDataGrid-iconSeparator"
focusable="false"
viewBox="0 0 24 24"
>
<path
d="M11 19V5h2v14z"
/>
</svg>
</div>
</div>
<div
class="MuiDataGrid-cell MuiDataGrid-cellLeft"
role="cell"
style="min-width: 800px; max-width: 800px; line-height: 55px; min-height: 56px; max-height: 56px;"
/>
</div>
</div>
<div
class="MuiDataGrid-window"
style="top: 56px; overflow-y: hidden;"
>
<div
class="MuiDataGrid-dataContainer data-container"
style="min-height: 119px; min-width: 1310px;"
>
<div
class="MuiDataGrid-viewport"
style="min-width: 0; max-width: 0; min-height: 104px; max-height: 104px;"
>
<div
class="rendering-zone"
style="max-height: 275px; width: 1310px; pointer-events: unset; transform: translate3d(-0px, -0px, 0);"
>
<div
aria-rowindex="2"
aria-selected="false"
class="MuiDataGrid-row Mui-even"
data-id="10190"
data-rowindex="0"
role="row"
style="max-height: 52px; min-height: 52px;"
>
<div
aria-colindex="0"
class="MuiDataGrid-cell MuiDataGrid-cellRight"
data-field="id"
data-rowindex="0"
data-value="10190"
role="cell"
style="min-width: 130px; max-width: 130px; line-height: 51px; min-height: 52px; max-height: 52px;"
tabindex="0"
>
10190
</div>
<div
aria-colindex="1"
class="MuiDataGrid-cell MuiDataGrid-cellRight"
data-field="tenant_id"
data-rowindex="0"
data-value="12201"
role="cell"
style="min-width: 130px; max-width: 130px; line-height: 51px; min-height: 52px; max-height: 52px;"
tabindex="-1"
>
12201
</div>
<div
aria-colindex="2"
class="MuiDataGrid-cell MuiDataGrid-cellLeft"
data-field="user_reference"
data-rowindex="0"
data-value="Xuser_ref"
role="cell"
style="min-width: 250px; max-width: 250px; line-height: 51px; min-height: 52px; max-height: 52px;"
tabindex="-1"
>
Xuser_ref
</div>
<div
class="MuiDataGrid-cell MuiDataGrid-cellLeft"
role="cell"
style="min-width: 800px; max-width: 800px; line-height: 51px; min-height: 52px; max-height: 52px;"
/>
</div>
<div
aria-rowindex="3"
aria-selected="false"
class="MuiDataGrid-row Mui-odd"
data-id="23541"
data-rowindex="1"
role="row"
style="max-height: 52px; min-height: 52px;"
>
<div
aria-colindex="0"
class="MuiDataGrid-cell MuiDataGrid-cellRight"
data-field="id"
data-rowindex="1"
data-value="23541"
role="cell"
style="min-width: 130px; max-width: 130px; line-height: 51px; min-height: 52px; max-height: 52px;"
tabindex="-1"
>
23541
</div>
<div
aria-colindex="1"
class="MuiDataGrid-cell MuiDataGrid-cellRight"
data-field="tenant_id"
data-rowindex="1"
data-value="96542"
role="cell"
style="min-width: 130px; max-width: 130px; line-height: 51px; min-height: 52px; max-height: 52px;"
tabindex="-1"
>
96542
</div>
<div
aria-colindex="2"
class="MuiDataGrid-cell MuiDataGrid-cellLeft"
data-field="user_reference"
data-rowindex="1"
data-value="Yuser_ref"
role="cell"
style="min-width: 250px; max-width: 250px; line-height: 51px; min-height: 52px; max-height: 52px;"
tabindex="-1"
>
Yuser_ref
</div>
<div
class="MuiDataGrid-cell MuiDataGrid-cellLeft"
role="cell"
style="min-width: 800px; max-width: 800px; line-height: 51px; min-height: 52px; max-height: 52px;"
/>
</div>
</div>
</div>
</div>
</div>
</div>
<div>
<div
class="MuiDataGrid-footer"
>
<div />
<div
class="MuiTablePagination-root"
>
<div
class="MuiToolbar-root MuiToolbar-regular MuiTablePagination-toolbar MuiToolbar-gutters"
>
<div
class="MuiTablePagination-spacer"
/>
<p
class="MuiTypography-root MuiTablePagination-caption makeStyles-caption-1 MuiTypography-body2 MuiTypography-colorInherit"
>
1-2 of 2
</p>
<div
class="MuiTablePagination-actions"
>
<button
aria-label="Previous page"
class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorInherit Mui-disabled Mui-disabled"
disabled=""
tabindex="-1"
title="Previous page"
type="button"
>
<span
class="MuiIconButton-label"
>
<svg
aria-hidden="true"
class="MuiSvgIcon-root"
focusable="false"
viewBox="0 0 24 24"
>
<path
d="M15.41 16.09l-4.58-4.59 4.58-4.59L14 5.5l-6 6 6 6z"
/>
</svg>
</span>
</button>
<button
aria-label="Next page"
class="MuiButtonBase-root MuiIconButton-root MuiIconButton-colorInherit Mui-disabled Mui-disabled"
disabled=""
tabindex="-1"
title="Next page"
type="button"
>
<span
class="MuiIconButton-label"
>
<svg
aria-hidden="true"
class="MuiSvgIcon-root"
focusable="false"
viewBox="0 0 24 24"
>
<path
d="M8.59 16.34l4.58-4.59-4.58-4.59L10 5.75l6 6-6 6z"
/>
</svg>
</span>
</button>
</div>
</div>
</div>
</div>
</div>
感谢您的帮助
【问题讨论】：
您发布的示例代码存在一些问题。首先，该组件没有显示columns 的来源，这可能是您问题中最重要的细节。此外，您的测试包含许多似乎与您的问题无关的代码，例如模拟 API、处理路由和执行突变。我建议您编写一个更简单的组件/测试来演示问题，并且还包括 DOM（来自screen.debug）。
我也对关于 DataGrid 容器宽度为 0 的警告消息感到恼火，而且我也在使用 React 测试库。使用哪种测试解决方案无关紧要。 “网格宽度为 0”的技术闻起来像 hack。
【参考方案1】：
我找到了解决方案：您可以设置数据网格的 columnBuffer 属性。
例如columnBuffer=8 8 列。
【讨论】：
是的，但我仍然在日志中收到 MUI 警告：“Material-UI: useResizeContainer - 网格的父级有一个空的宽度”，这混淆了我的测试运行结果。 @gap 看起来这是包的问题，如果您更新到较新的版本，它会得到修复。错误被包裹在一些逻辑中，以测试测试环境是否为 JSDOM 在较新的版本中，您可以使用disableVirtualization 属性完全禁用虚拟化。这会强制网格渲染所有单元格。 mui.com/components/data-grid/virtualization/…【参考方案2】：
它与DataGrid无关，请确保您的外部大多数容器默认占据100％的高度和宽度。我遇到了同样的问题，如下所示：
在阅读警告时，我意识到容器需要调整大小，因此我将最外部容器的 CSS 更改为具有整个宽度的 flexbox，如下所示：
display: flex;
flex-direction: column;
height: 100%;
width: 100%;
如果您看到我的两张图片，您会注意到导致表格无法正确显示的差异。
【讨论】：
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