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@corva/eslint-plugin-test-selectors

v1.0.0

Published

Makes sure test DOM attributes (e.g. data-test-id) are added to interactive DOM elements.

Downloads

3,543

Readme

eslint-plugin-test-selectors

Enforces that a data-test-id (case-sensitive) attribute is present on interactive DOM elements to help with UI testing.

  • <button>Download</button>
  • <button data-test-id="download-button">Download</button>

Installation

You'll first need to install ESLint, which requires Node.js (note that eslint-plugin-test-selectors requires Node.js 10+):

$ yarn add eslint --dev

Next, install @corva/eslint-plugin-test-selectors:

$ yarn add @corva/eslint-plugin-test-selectors --dev

Usage

Add @corva/test-selectors to the plugins section of your .eslintrc configuration file:

{
  "plugins": ["@corva/test-selectors"]
}

If you want to use all the recommended default rules, you can simply add this line to the extends section of your .eslintrc configuration:

{
  "extends": ["plugin:@corva/test-selectors/recommended"]
}

By default, this will run all Supported Rules and emit eslint warnings. If you want to be more strict, you can emit eslint errors by instead using plugin:@corva/test-selectors/recommendedWithErrors.

Another option: you can also selectively enable and disable individual rules in the rules section of your .eslintrc configuration. For instance, if you only want to enable the @corva/test-selectors/button rule, skip the extends addition above and simply add the following to the rules section of your .eslintrc configuration:

{
  "rules": {
    "@corva/test-selectors/button": ["warn", "always"]
  }
}

If you like most of the recommended rules by adding the extends option above, but find one in particular to be bothersome, you can simply disable it:

{
  "rules": {
    "@corva/test-selectors/anchor": "off"
  }
}

Note: see Supported Rules below for a full list.

Custom rule options

All tests can be customized individually by passing an object with one or more of the following properties.

testAttribute

The default test attribute expected is data-test-id, but you can override it with whatever you like. Here is how you would use data-some-custom-attribute instead:

{
  "rules": {
    "@corva/test-selectors/onChange": [
      "warn",
      "always",
      { "testAttribute": "data-some-custom-attribute" }
    ]
  }
}

Note: You can also pass multiple attributes

{
  "rules": {
    "@corva/test-selectors/onChange": [
      "warn",
      "always",
      { "testAttribute": ["data-testid", "testId"] }
    ]
  }
}

ignoreDisabled

By default all elements with the disabled attribute are ignored, e.g. <input disabled />. If you don't want to ignore this attribute, set ignoreDisabled to false:

{
  "rules": {
    "@corva/test-selectors/onChange": ["warn", "always", { "ignoreDisabled": false }]
  }
}

ignoreReadonly

By default all elements with the readonly attribute are ignored, e.g. <input readonly />. If you don't want to ignore this attribute, set ignoreReadonly to false:

{
  "rules": {
    "@corva/test-selectors/onChange": ["warn", "always", { "ignoreReadonly": false }]
  }
}

htmlOnly

Only supported on button rule, this option will exempt React components called Button from the rule.

{
  "rules": {
    "@corva/test-selectors/button": ["warn", "always", { "htmlOnly": true }]
  }
}

Supported Rules

  • @corva/test-selectors/anchor
  • @corva/test-selectors/button
  • @corva/test-selectors/input
  • @corva/test-selectors/onChange
  • @corva/test-selectors/onClick
  • @corva/test-selectors/onKeyDown
  • @corva/test-selectors/onKeyUp
  • @corva/test-selectors/onSubmit