design-system-react/eslint-plugin/tests/lib/rules/no-double-dash-modifier.js at master · salesforce/design-system-react · GitHub

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/**
 * @fileoverview Warns against using the deprecated, double-dash style for BEM
 * notation. See:
 * https://releasenotes.docs.salesforce.com/en-us/summer17/release-notes/rn_lds.htm.
 * @author Kevin Gao
 */

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------

// eslint-disable-next-line import/no-extraneous-dependencies
// eslint-disable-next-line prefer-destructuring
const RuleTester = require('eslint').RuleTester;
const rule = require('../../../lib/rules/no-double-dash-modifier');

//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------

const parserOptions = {
	ecmaVersion: 6,
	ecmaFeatures: {
		jsx: true,
	},
};

const ruleTester = new RuleTester();
ruleTester.run('no-double-dash-modifier', rule, {
	/* eslint-disable no-template-curly-in-string */
	valid: [
		{
			code: '<div className="slds-p-around_medium"/>',
			parserOptions,
		},
		{
			code: '<div className="slds-p-around_medium slds-m-around_medium"/>',
			parserOptions,
		},
		{
			code: '<div className="some-other-bem--modifier"/>',
			parserOptions,
		},
		{
			code: '<div className={`slds-button_icon-${iconVariant}`}/>',
			parserOptions,
		},
		{
			code: '<div className={`slds-dropdown_${position}`}/>',
			parserOptions,
		},
	],

	invalid: [
		{
			code: '<div className="slds-p-around--medium"/>',
			output: '<div className="slds-p-around_medium"/>',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-p-around--medium".',
				},
			],
			parserOptions,
		},
		{
			code: '<div className="slds-p-around--medium slds-m-around--medium"/>',
			output: '<div className="slds-p-around_medium slds-m-around_medium"/>',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-p-around--medium", "slds-m-around--medium".',
				},
			],
			parserOptions,
		},
		{
			code:
				'<div className="another-class slds-p-around--medium and-another"/>',
			output:
				'<div className="another-class slds-p-around_medium and-another"/>',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-p-around--medium".',
				},
			],
			parserOptions,
		},
		{
			code: '{[`slds-button__icon--${props.size}`]}',
			output: '{[`slds-button__icon_${props.size}`]}',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-button__icon--".',
				},
			],
			parserOptions,
		},
		{
			code: '<div className={`slds-button--icon-${iconVariant}`}/>',
			output: '<div className={`slds-button_icon-${iconVariant}`}/>',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-button--icon-".',
				},
			],
			parserOptions,
		},
		{
			code: '<div className={`slds-dropdown--${position}`}/>',
			output: '<div className={`slds-dropdown_${position}`}/>',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-dropdown--".',
				},
			],
			parserOptions,
		},
		{
			code: '<div className={`${otherclasses}slds-dropdown--${position}`}/>',
			output: '<div className={`${otherclasses}slds-dropdown_${position}`}/>',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-dropdown--".',
				},
			],
			parserOptions,
		},
		{
			code: '{[`${otherClases}slds-button__icon--large`]}',
			output: '{[`${otherClases}slds-button__icon_large`]}',
			errors: [
				{
					message:
						'SLDS modifier CSS classes should use a single ' +
						'underscore instead of double-hyphen: ' +
						'"slds-button__icon--large".',
				},
			],
			parserOptions,
		},
	],
	/* eslint-enable no-template-curly-in-string */
});