Refactor lib/utils/__tests__/* test files to migrate to ESM (#7022)

- `.js` -> `.mjs`
- `require` -> `import`

lib/utils/__tests__/checkAgainstRule.test.js → lib/utils/__tests__/checkAgainstRule.test.mjs

@@ -1,9 +1,8 @@
-'use strict';
+import checkAgainstRule from '../checkAgainstRule.js';
+import report from '../report.js';
+import validateOptions from '../validateOptions.js';
 
-const report = require('../report');
-const validateOptions = require('../validateOptions');
-const checkAgainstRule = require('../checkAgainstRule');
-const postcss = require('postcss');
+import postcss from 'postcss';
 
 const mockRuleName = 'custom/no-empty-source';
 const mockResult = {

lib/utils/__tests__/functionArgumentsSearch.test.js → lib/utils/__tests__/functionArgumentsSearch.test.mjs

@@ -1,6 +1,6 @@
-'use strict';
+import functionArgumentsSearch from '../functionArgumentsSearch.js';
 
-const functionArgumentsSearch = require('../functionArgumentsSearch');
+import { jest } from '@jest/globals';
 
 it('passes function arguments to callback', () => {
 	expect.assertions(4);

lib/utils/__tests__/getDimension.test.js → lib/utils/__tests__/getDimension.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const getDimension = require('../getDimension');
-const valueParser = require('postcss-value-parser');
+import getDimension from '../getDimension.js';
+import valueParser from 'postcss-value-parser';
 
 it('getDimension', () => {
 	expect(getDimension().number).toBeNull();

lib/utils/__tests__/getFormatterOptionsText.test.js → lib/utils/__tests__/getFormatterOptionsText.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const getFormatterOptionsText = require('../getFormatterOptionsText');
+import getFormatterOptionsText from '../getFormatterOptionsText.js';
 
 it('getFormatterOptionsText', () => {
 	expect(getFormatterOptionsText(', ')).toBe('compact, github, json, string, tap, unix, verbose');

lib/utils/__tests__/getImportantPosition.test.js → lib/utils/__tests__/getImportantPosition.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const getImportantPosition = require('../getImportantPosition');
+import getImportantPosition from '../getImportantPosition.js';
 
 describe('getImportantPosition', () => {
 	it('returns a position of "!important"', () => {

lib/utils/__tests__/getNextNonSharedLineCommentNode.test.js → lib/utils/__tests__/getNextNonSharedLineCommentNode.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const getNextNonSharedLineCommentNode = require('../getNextNonSharedLineCommentNode');
-const postcss = require('postcss');
+import getNextNonSharedLineCommentNode from '../getNextNonSharedLineCommentNode.js';
+import postcss from 'postcss';
 
 describe('getNextNonSharedLineCommentNode', () => {
 	it('returns undefined if there is no next node', () => {

lib/utils/__tests__/getPreviousNonSharedLineCommentNode.test.js → lib/utils/__tests__/getPreviousNonSharedLineCommentNode.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const getPreviousNonSharedLineCommentNode = require('../getPreviousNonSharedLineCommentNode');
-const postcss = require('postcss');
+import getPreviousNonSharedLineCommentNode from '../getPreviousNonSharedLineCommentNode.js';
+import postcss from 'postcss';
 
 describe('getPreviousNonSharedLineCommentNode', () => {
 	it('returns undefined if there is no node before', () => {

lib/utils/__tests__/getSchemeFromUrl.test.js → lib/utils/__tests__/getSchemeFromUrl.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const getSchemeFromUrl = require('../getSchemeFromUrl');
+import getSchemeFromUrl from '../getSchemeFromUrl.js';
 
 it('getSchemeFromUrl', () => {
 	expect(getSchemeFromUrl('')).toBeNull();

lib/utils/__tests__/hasBlock.test.js → lib/utils/__tests__/hasBlock.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const hasBlock = require('../hasBlock');
-const postcss = require('postcss');
+import hasBlock from '../hasBlock.js';
+import postcss from 'postcss';
 
 it('hasBlock', () => {
 	expect(postcssCheck('a {}')).toBeTruthy();

lib/utils/__tests__/hasEmptyLine.test.js → lib/utils/__tests__/hasEmptyLine.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const hasEmptyLine = require('../hasEmptyLine');
+import hasEmptyLine from '../hasEmptyLine.js';
 
 it('hasEmptyLine', () => {
 	expect(hasEmptyLine('\n\n')).toBeTruthy();

lib/utils/__tests__/hasInterpolation.test.js → lib/utils/__tests__/hasInterpolation.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const hasInterpolation = require('../hasInterpolation');
+import hasInterpolation from '../hasInterpolation.js';
 
 it('hasInterpolation', () => {
 	expect(hasInterpolation('(min-width#{$value}: 10px)')).toBeTruthy();

lib/utils/__tests__/isAfterComment.test.js → lib/utils/__tests__/isAfterComment.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isAfterComment = require('../isAfterComment');
-const postcss = require('postcss');
+import isAfterComment from '../isAfterComment.js';
+import postcss from 'postcss';
 
 describe('isAfterComment', () => {
 	it('returns true when after a single-line comment', () => {

lib/utils/__tests__/isAfterSingleLineComment.test.js → lib/utils/__tests__/isAfterSingleLineComment.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isAfterSingleLineComment = require('../isAfterSingleLineComment');
-const postcss = require('postcss');
+import isAfterSingleLineComment from '../isAfterSingleLineComment.js';
+import postcss from 'postcss';
 
 describe('isAfterSingleLineComment', () => {
 	it('returns true when after a single-line comment', () => {

lib/utils/__tests__/isAutoprefixable.test.js → lib/utils/__tests__/isAutoprefixable.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isAutoprefixable = require('../isAutoprefixable');
+import isAutoprefixable from '../isAutoprefixable.js';
 
 describe('isAutoprefixable.atRuleName()', () => {
 	it('returns true', () => {

lib/utils/__tests__/isBlocklessAtRuleAfterBlocklessAtRule.test.js → lib/utils/__tests__/isBlocklessAtRuleAfterBlocklessAtRule.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isBlocklessAtRuleAfterBlocklessAtRule = require('../isBlocklessAtRuleAfterBlocklessAtRule');
-const postcss = require('postcss');
+import isBlocklessAtRuleAfterBlocklessAtRule from '../isBlocklessAtRuleAfterBlocklessAtRule.js';
+import postcss from 'postcss';
 
 describe('isBlocklessAtRuleAfterBlocklessAtRule', () => {
 	it('returns false with the first node', () => {

lib/utils/__tests__/isBlocklessAtRuleAfterSameNameBlocklessAtRule.test.js → lib/utils/__tests__/isBlocklessAtRuleAfterSameNameBlocklessAtRule.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isBlocklessAtRuleAfterSameNameBlocklessAtRule = require('../isBlocklessAtRuleAfterSameNameBlocklessAtRule');
-const postcss = require('postcss');
+import isBlocklessAtRuleAfterSameNameBlocklessAtRule from '../isBlocklessAtRuleAfterSameNameBlocklessAtRule.js';
+import postcss from 'postcss';
 
 describe('isBlocklessAtRuleAfterSameNameBlocklessAtRule', () => {
 	it('returns false with the first node', () => {

lib/utils/__tests__/isContextFunctionalPseudoClass.test.js → lib/utils/__tests__/isContextFunctionalPseudoClass.test.mjs

@@ -1,8 +1,6 @@
-'use strict';
-
-const isContextFunctionalPseudoClass = require('../isContextFunctionalPseudoClass');
-const parseSelector = require('postcss-selector-parser');
-const postcss = require('postcss');
+import isContextFunctionalPseudoClass from '../isContextFunctionalPseudoClass.js';
+import parseSelector from 'postcss-selector-parser';
+import postcss from 'postcss';
 
 function pseudo(css) {
 	const pseudos = [];

lib/utils/__tests__/isCounterIncrementCustomIdentValue.test.js → lib/utils/__tests__/isCounterIncrementCustomIdentValue.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCounterIncrementCustomIdentValue = require('../isCounterIncrementCustomIdentValue');
+import isCounterIncrementCustomIdentValue from '../isCounterIncrementCustomIdentValue.js';
 
 it('isCustomIdents', () => {
 	expect(isCounterIncrementCustomIdentValue('counter')).toBeTruthy();

lib/utils/__tests__/isCounterResetCustomIdentValue.test.js → lib/utils/__tests__/isCounterResetCustomIdentValue.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCounterResetCustomIdentValue = require('../isCounterResetCustomIdentValue');
+import isCounterResetCustomIdentValue from '../isCounterResetCustomIdentValue.js';
 
 it('isCustomIdents', () => {
 	expect(isCounterResetCustomIdentValue('counter')).toBeTruthy();

lib/utils/__tests__/isCustomElement.test.js → lib/utils/__tests__/isCustomElement.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCustomElement = require('../isCustomElement');
+import isCustomElement from '../isCustomElement.js';
 
 describe('isCustomElement', () => {
 	it('custom element', () => {

lib/utils/__tests__/isCustomFunction.test.js → lib/utils/__tests__/isCustomFunction.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCustomFunction = require('../isCustomFunction');
+import isCustomFunction from '../isCustomFunction.js';
 
 it('isCustomFunction', () => {
 	expect(isCustomFunction('--custom-function')).toBeTruthy();

lib/utils/__tests__/isCustomMediaQuery.test.js → lib/utils/__tests__/isCustomMediaQuery.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCustomMediaQuery = require('../isCustomMediaQuery');
+import isCustomMediaQuery from '../isCustomMediaQuery.js';
 
 it('isCustomMediaQuery', () => {
 	expect(isCustomMediaQuery('--custom-media-query')).toBeTruthy();

lib/utils/__tests__/isCustomProperty.test.js → lib/utils/__tests__/isCustomProperty.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCustomProperty = require('../isCustomProperty');
+import isCustomProperty from '../isCustomProperty.js';
 
 it('isCustomProperty', () => {
 	expect(isCustomProperty('--custom-property')).toBeTruthy();

lib/utils/__tests__/isCustomSelector.test.js → lib/utils/__tests__/isCustomSelector.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isCustomSelector = require('../isCustomSelector');
+import isCustomSelector from '../isCustomSelector.js';
 
 it('isCustomSelector', () => {
 	expect(isCustomSelector(':--custom-selector')).toBeTruthy();

lib/utils/__tests__/isFirstNested.test.js → lib/utils/__tests__/isFirstNested.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isFirstNested = require('../isFirstNested');
-const postcss = require('postcss');
+import isFirstNested from '../isFirstNested.js';
+import postcss from 'postcss';
 
 describe('isFirstNested', () => {
 	it('returns false with the first node', () => {

lib/utils/__tests__/isKeyframeRule.test.js → lib/utils/__tests__/isKeyframeRule.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isKeyframeRule = require('../isKeyframeRule');
-const postcss = require('postcss');
+import isKeyframeRule from '../isKeyframeRule.js';
+import postcss from 'postcss';
 
 describe('isKeyframeRule', () => {
 	it('detects a standard keyframe rule', () => {

lib/utils/__tests__/isKeyframeSelector.test.js → lib/utils/__tests__/isKeyframeSelector.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isKeyframeSelector = require('../isKeyframeSelector');
+import isKeyframeSelector from '../isKeyframeSelector.js';
 
 it('isKeyframeSelector', () => {
 	expect(isKeyframeSelector('to')).toBeTruthy();

lib/utils/__tests__/isMathFunction.test.js → lib/utils/__tests__/isMathFunction.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isMathFunction = require('../isMathFunction');
-const valueParser = require('postcss-value-parser');
+import isMathFunction from '../isMathFunction.js';
+import valueParser from 'postcss-value-parser';
 
 describe('isMathFunction', () => {
 	it('matches calc', () => {

lib/utils/__tests__/isNonNegativeInteger.test.js → lib/utils/__tests__/isNonNegativeInteger.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isNonNegativeInteger = require('../isNonNegativeInteger');
+import isNonNegativeInteger from '../isNonNegativeInteger.js';
 
 describe('isNonNegativeInteger', () => {
 	it('returns true', () => {

lib/utils/__tests__/isNumbery.test.js → lib/utils/__tests__/isNumbery.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isNumbery = require('../isNumbery');
+import isNumbery from '../isNumbery.js';
 
 test('isNumbery', () => {
 	expect(isNumbery('1')).toBe(true);

lib/utils/__tests__/isOnlyWhitespace.test.js → lib/utils/__tests__/isOnlyWhitespace.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isOnlyWhitespace = require('../isOnlyWhitespace');
+import isOnlyWhitespace from '../isOnlyWhitespace.js';
 
 it('isOnlyWhitespace', () => {
 	expect(isOnlyWhitespace('\r\n \t \n   ')).toBeTruthy();

lib/utils/__tests__/isScssVariable.test.js → lib/utils/__tests__/isScssVariable.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isScssVariable = require('../isScssVariable');
+import isScssVariable from '../isScssVariable.js';
 
 describe('isScssVariable', () => {
 	it('sass variable', () => {

lib/utils/__tests__/isSharedLineComment.test.js → lib/utils/__tests__/isSharedLineComment.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isSharedLineComment = require('../isSharedLineComment');
-const postcss = require('postcss');
+import isSharedLineComment from '../isSharedLineComment.js';
+import postcss from 'postcss';
 
 describe('isSharedLineComment', () => {
 	it('returns false for the first node', () => {

lib/utils/__tests__/isSingleLineString.test.js → lib/utils/__tests__/isSingleLineString.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isSingleLineString = require('../isSingleLineString');
+import isSingleLineString from '../isSingleLineString.js';
 
 const multiLineTemplate = `foo
 bar`;

lib/utils/__tests__/isStandardSyntaxAtRule.test.js → lib/utils/__tests__/isStandardSyntaxAtRule.test.mjs

@@ -1,10 +1,8 @@
-'use strict';
-
-const isStandardSyntaxAtRule = require('../isStandardSyntaxAtRule');
-const postcss = require('postcss');
-const postcssLess = require('postcss-less');
-const postcssSass = require('postcss-sass');
-const postcssScss = require('postcss-scss');
+import isStandardSyntaxAtRule from '../isStandardSyntaxAtRule.js';
+import postcss from 'postcss';
+import postcssLess from 'postcss-less';
+import postcssSass from 'postcss-sass';
+import postcssScss from 'postcss-scss';
 
 describe('isStandardSyntaxAtRule', () => {
 	it('non nested at-rules without quotes', () => {

lib/utils/__tests__/isStandardSyntaxColorFunction.test.js → lib/utils/__tests__/isStandardSyntaxColorFunction.test.mjs

@@ -1,8 +1,6 @@
-'use strict';
-
-const isStandardSyntaxColorFunction = require('../isStandardSyntaxColorFunction');
-const postcss = require('postcss');
-const valueParser = require('postcss-value-parser');
+import isStandardSyntaxColorFunction from '../isStandardSyntaxColorFunction.js';
+import postcss from 'postcss';
+import valueParser from 'postcss-value-parser';
 
 describe('isStandardSyntaxColorFunction', () => {
 	it('legacy syntax', () => {

lib/utils/__tests__/isStandardSyntaxCombinator.test.js → lib/utils/__tests__/isStandardSyntaxCombinator.test.mjs

@@ -1,8 +1,6 @@
-'use strict';
-
-const isStandardSyntaxCombinator = require('../isStandardSyntaxCombinator');
-const postcss = require('postcss');
-const selectorParser = require('postcss-selector-parser');
+import isStandardSyntaxCombinator from '../isStandardSyntaxCombinator.js';
+import postcss from 'postcss';
+import selectorParser from 'postcss-selector-parser';
 
 describe('isStandardSyntaxCombinator', () => {
 	it('tag', () => {

lib/utils/__tests__/isStandardSyntaxComment.test.js → lib/utils/__tests__/isStandardSyntaxComment.test.mjs

@@ -1,11 +1,9 @@
-'use strict';
+import isStandardSyntaxComment from '../isStandardSyntaxComment.js';
 
-const isStandardSyntaxComment = require('../isStandardSyntaxComment');
-
-const postcss = require('postcss');
-const postcssLess = require('postcss-less');
-const postcssSass = require('postcss-sass');
-const postcssScss = require('postcss-scss');
+import postcss from 'postcss';
+import postcssLess from 'postcss-less';
+import postcssSass from 'postcss-sass';
+import postcssScss from 'postcss-scss';
 
 describe('isStandardSyntaxComment', () => {
 	test('standard single-line comment', () => {

lib/utils/__tests__/isStandardSyntaxDeclaration.test.js → lib/utils/__tests__/isStandardSyntaxDeclaration.test.mjs

@@ -1,10 +1,8 @@
-'use strict';
-
-const isStandardSyntaxDeclaration = require('../isStandardSyntaxDeclaration');
-const postcss = require('postcss');
-const postcssLess = require('postcss-less');
-const postcssSass = require('postcss-sass');
-const postcssScss = require('postcss-scss');
+import isStandardSyntaxDeclaration from '../isStandardSyntaxDeclaration.js';
+import postcss from 'postcss';
+import postcssLess from 'postcss-less';
+import postcssSass from 'postcss-sass';
+import postcssScss from 'postcss-scss';
 
 describe('isStandardSyntaxDeclaration', () => {
 	it('standard prop and value', () => {

lib/utils/__tests__/isStandardSyntaxFunction.test.js → lib/utils/__tests__/isStandardSyntaxFunction.test.mjs

@@ -1,7 +1,5 @@
-'use strict';
-
-const isStandardSyntaxFunction = require('../isStandardSyntaxFunction');
-const valueParser = require('postcss-value-parser');
+import isStandardSyntaxFunction from '../isStandardSyntaxFunction.js';
+import valueParser from 'postcss-value-parser';
 
 describe('isStandardSyntaxFunction', () => {
 	it('calc', () => {

lib/utils/__tests__/isStandardSyntaxHexColor.test.js → lib/utils/__tests__/isStandardSyntaxHexColor.test.mjs

@@ -1,6 +1,4 @@
-'use strict';
-
-const isStandardSyntaxHexColor = require('../isStandardSyntaxHexColor');
+import isStandardSyntaxHexColor from '../isStandardSyntaxHexColor.js';
 
 describe('isStandardSyntaxHexColor', () => {
 	it('default hex', () => {