mui / mui/material-ui

Latest 5.10.7 Causes duplicate classes in snapshots

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#34,502 18 comments 11 reactions 0 assignees View on GitHub

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component: FormControl scope: text field
Dominant language
JavaScript
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Description

Duplicates
  • I have searched the existing issues
Latest version
  • I have tested the latest version
Steps to reproduce 🕹

Steps:

  1. upgrade to 5.10.7 from 5.10.6
Current behavior 😯
            >
              Sprite Icons
            </h2>
            <label
    -         class="MuiFormLabel-root MuiInputLabel-root MuiInputLabel-shrink MuiFormLabel-colorPrimary emotion-120"
    +         class="MuiFormLabel-root MuiInputLabel-root MuiInputLabel-shrink MuiFormLabel-colorPrimary MuiInputLabel-root MuiInputLabel-shrink emotion-120"
              data-shrink="true"
              id="demo-simple-select-label"
            >

### Expected behavior 🤔

Take a look, the classes like MuiInputLabel-root are getting doubled up.

### Context 🔦

Jest snapshots should match without duplicate classes.

### Your environment 🌎

<details>
  <summary><code>npx @mui/envinfo</code></summary>
jest
</details>

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the Jest snapshot difference while upgrading from 5.10.6 to 5.10.7, using the duplicate MuiInputLabel classes shown in the issue as the check. Trace the snapshot-rendered component and compare the generated class lists; done means the affected snapshots no longer contain duplicated classes.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, react
Domain
frontend, testing
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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