@stryker-mutator/core/dist/test/unit/utils/string-utils.spec.js

The extendable JavaScript mutation testing framework

import { expect } from 'chai';
import { stringWidth } from '../../../src/utils/string-utils.js';
describe('string utils', () => {
    describe('inputLength', () => {
        it('should see an emoji as two characters in lenght', () => {
            const actual = stringWidth('✅ killed');
            expect(actual).to.eq(9);
        });
        it('should support multiple emojis in string', () => {
            const actual = stringWidth('✅✅');
            expect(actual).to.eq(4);
        });
        it('should support this in string', () => {
            const actual = stringWidth('⌛️');
            expect(actual).to.eq(2);
        });
        it('returns input length when no emoji.', () => {
            const s = 'This is a test.';
            const expected = s.length;
            const actual = stringWidth(s);
            expect(actual).to.eq(expected);
        });
    });
});
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