/
isStandardSyntaxDeclaration.test.js
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/
isStandardSyntaxDeclaration.test.js
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'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');
describe('isStandardSyntaxDeclaration', () => {
it('standard prop and value', () => {
expect(isStandardSyntaxDeclaration(decl('a { a: b }'))).toBe(true);
});
it('standard prop and scss var', () => {
expect(isStandardSyntaxDeclaration(decl('a { a: $b }'))).toBe(true);
});
it('custom-property', () => {
expect(isStandardSyntaxDeclaration(decl('a { --custom-property: x }'))).toBe(true);
});
it('standard prop and calc value', () => {
expect(isStandardSyntaxDeclaration(decl('a { a : calc(b + c) }'))).toBe(true);
});
it('does not break @selector', () => {
expect(isStandardSyntaxDeclaration(decl('@page { size: A4 }'))).toBe(true);
});
it('property with sass variable interpolation (only)', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\t#{$var}: 10px'))).toBe(true);
});
it('property with scss variable interpolation (only)', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { #{$var}: 10px; }'))).toBe(true);
});
it('property with sass variable interpolation (end)', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\tprop#{$var}: 10px'))).toBe(true);
});
it('property with scss variable interpolation (end)', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { prop#{$var}: 10px; }'))).toBe(true);
});
it('property with sass variable interpolation (middle)', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\tprop#{$var}erty: 10px'))).toBe(true);
});
it('property with scss variable interpolation (middle)', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { prop#{$var}erty: 10px; }'))).toBe(true);
});
it('property with less variable interpolation (only)', () => {
expect(isStandardSyntaxDeclaration(lessDecl('a { @{var}: 10px; }'))).toBe(true);
});
it('property with less variable interpolation (end)', () => {
expect(isStandardSyntaxDeclaration(lessDecl('a { prop@{var}: 10px; }'))).toBe(true);
});
it('property with less variable interpolation (middle)', () => {
expect(isStandardSyntaxDeclaration(lessDecl('a { prop@{var}erty: 10px; }'))).toBe(true);
});
it('sass var', () => {
expect(isStandardSyntaxDeclaration(sassDecl('$var: b'))).toBe(false);
});
it('scss var', () => {
expect(isStandardSyntaxDeclaration(scssDecl('$var: b'))).toBe(false);
});
it('scss var within namespace', () => {
expect(isStandardSyntaxDeclaration(scssDecl('namespace.$var: b'))).toBe(false);
});
it('nested scss var within namespace', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { namespace.$var: b }'))).toBe(false);
});
it('sass list', () => {
expect(isStandardSyntaxDeclaration(sassDecl('$list: (key: value, key2: value2)'))).toBe(false);
});
it('scss list', () => {
expect(isStandardSyntaxDeclaration(scssDecl('$list: (key: value, key2: value2)'))).toBe(false);
});
it('sass map', () => {
expect(isStandardSyntaxDeclaration(sassDecl('$map: (value, value2)'))).toBe(false);
});
it('scss map', () => {
expect(isStandardSyntaxDeclaration(scssDecl('$map: (value, value2)'))).toBe(false);
});
it('nested sass var', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\t$var: b'))).toBe(false);
});
it('nested scss var', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { $var: b }'))).toBe(false);
});
it('nested sass list', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\t$list: (key: value, key2: value2)'))).toBe(
false,
);
});
it('nested scss list', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { $list: (key: value, key2: value2) }'))).toBe(
false,
);
});
it('sass nested property', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\tborder:\n\t\tstyle: solid'))).toBe(false);
});
it('scss nested property', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { border: { style: solid; } }'))).toBe(false);
});
it('nested sass map', () => {
expect(isStandardSyntaxDeclaration(sassDecl('a\n\t$map: (value, value2)'))).toBe(false);
});
it('nested scss map', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { $map: (value, value2) }'))).toBe(false);
});
it('less &:extend', () => {
expect(isStandardSyntaxDeclaration(lessDecl('a { &:extend(b) }'))).toBe(false);
});
it('less map', () => {
expect(isStandardSyntaxDeclaration(lessDecl('@map: { key: value; }'))).toBe(false);
});
it('less another map', () => {
expect(isStandardSyntaxDeclaration(lessDecl('#my-map() { key: value; }'))).toBe(false);
});
it('scss map declaration', () => {
expect(isStandardSyntaxDeclaration(scssDecl('$foo: (key: value, key2: value2)'))).toBe(false);
});
it('scss map declaration with quotes', () => {
expect(isStandardSyntaxDeclaration(scssDecl('$foo: ("key": value, "key2": value2)'))).toBe(
false,
);
});
it('scss list declaration', () => {
expect(isStandardSyntaxDeclaration(scssDecl('$foo: (value, value2)'))).toBe(false);
});
it('scss pure value in parentheses', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { height: (0) }'))).toBe(true);
});
it('scss complex value in parentheses', () => {
expect(isStandardSyntaxDeclaration(scssDecl('a { height: (3px + 5px) * (2px + 4px) }'))).toBe(
true,
);
});
it('supports root-level declarations', () => {
expect(isStandardSyntaxDeclaration(decl('color: yellow;'))).toBe(true);
});
});
function decl(css, parser = postcss) {
const list = [];
parser.parse(css).walkDecls((d) => list.push(d));
if (list.length === 1) {
return list[0];
}
throw new Error(`Expected length 1, but ${list.length}`);
}
function sassDecl(css) {
return decl(css, postcssSass);
}
function scssDecl(css) {
return decl(css, postcssScss);
}
function lessDecl(css) {
return decl(css, postcssLess);
}