/
isStandardSyntaxCombinator.test.js
91 lines (88 loc) · 2.41 KB
/
isStandardSyntaxCombinator.test.js
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'use strict';
const isStandardSyntaxCombinator = require('../isStandardSyntaxCombinator');
const postcss = require('postcss');
const selectorParser = require('postcss-selector-parser');
describe('isStandardSyntaxCombinator', () => {
it('tag', () => {
rules('a {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('descendant', () => {
rules('a b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('descendant tab', () => {
rules('a\tb {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('descendant newline', () => {
rules('a\nb {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('descendant (double child)', () => {
rules('a >> b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('child', () => {
rules('a > b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('next sibling', () => {
rules('a + b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('subsequent-sibling', () => {
rules('a ~ b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeTruthy();
});
});
it('lowercase reference', () => {
rules('a /for/ b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
it('mixedcase reference', () => {
rules('a /fOr/ b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
it('uppercase reference', () => {
rules('a /FOR/ b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
it('last node is combinator', () => {
rules('a ~, {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
it('first node is combinator', () => {
rules('~ b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
it('last node (in first container) is combinator', () => {
rules('a ~, b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
it('first node (in second container) is combinator', () => {
rules('a, ~ b {}', (func) => {
expect(isStandardSyntaxCombinator(func)).toBeFalsy();
});
});
});
function rules(css, cb) {
postcss.parse(css).walkRules((rule) => {
selectorParser((selectorAST) => {
selectorAST.walkCombinators(cb);
}).processSync(rule.selector);
});
}