lodash/test/toPath.spec.ts

import assert from 'node:assert';
import lodashStable from 'lodash';
import { symbol } from './utils';
import toPath from '../src/toPath';

describe('toPath', () => {
    it('should convert a string to a path', () => {
        assert.deepStrictEqual(toPath('a.b.c'), ['a', 'b', 'c']);
        assert.deepStrictEqual(toPath('a[0].b.c'), ['a', '0', 'b', 'c']);
    });

    it('should coerce array elements to strings', () => {
        const array = ['a', 'b', 'c'];

        lodashStable.each([array, lodashStable.map(array, Object)], (value) => {
            const actual = toPath(value);
            assert.deepStrictEqual(actual, array);
            assert.notStrictEqual(actual, array);
        });
    });

    it('should return new path array', () => {
        assert.notStrictEqual(toPath('a.b.c'), toPath('a.b.c'));
    });

    it('should not coerce symbols to strings', () => {
        if (Symbol) {
            const object = Object(symbol);
            lodashStable.each([symbol, object, [symbol], [object]], (value) => {
                const actual = toPath(value);
                assert.ok(lodashStable.isSymbol(actual[0]));
            });
        }
    });

    it('should handle complex paths', () => {
        const actual = toPath('a[-1.23]["[\\"b\\"]"].c[\'[\\\'d\\\']\'][\ne\n][f].g');
        assert.deepStrictEqual(actual, ['a', '-1.23', '["b"]', 'c', "['d']", '\ne\n', 'f', 'g']);
    });

    it('should handle consecutive empty brackets and dots', () => {
        let expected = ['', 'a'];
        assert.deepStrictEqual(toPath('.a'), expected);
        assert.deepStrictEqual(toPath('[].a'), expected);

        expected = ['', '', 'a'];
        assert.deepStrictEqual(toPath('..a'), expected);
        assert.deepStrictEqual(toPath('[][].a'), expected);

        expected = ['a', '', 'b'];
        assert.deepStrictEqual(toPath('a..b'), expected);
        assert.deepStrictEqual(toPath('a[].b'), expected);

        expected = ['a', '', '', 'b'];
        assert.deepStrictEqual(toPath('a...b'), expected);
        assert.deepStrictEqual(toPath('a[][].b'), expected);

        expected = ['a', ''];
        assert.deepStrictEqual(toPath('a.'), expected);
        assert.deepStrictEqual(toPath('a[]'), expected);

        expected = ['a', '', ''];
        assert.deepStrictEqual(toPath('a..'), expected);
        assert.deepStrictEqual(toPath('a[][]'), expected);
    });
});