n8n/packages/nodes-base/test/utils/utilities.test.ts

import { fuzzyCompare } from '../../utils/utilities';

//most test cases for fuzzyCompare are done in Compare Datasets node tests
describe('Test fuzzyCompare', () => {
	it('should do strict comparison', () => {
		const compareFunction = fuzzyCompare(false);

		expect(compareFunction(1, '1')).toEqual(false);
	});

	it('should do fuzzy comparison', () => {
		const compareFunction = fuzzyCompare(true);

		expect(compareFunction(1, '1')).toEqual(true);
	});

	it('should treat null, 0 and "0" as equal', () => {
		const compareFunction = fuzzyCompare(true, 2);

		expect(compareFunction(null, null)).toEqual(true);
		expect(compareFunction(null, 0)).toEqual(true);
		expect(compareFunction(null, '0')).toEqual(true);
	});

	it('should not treat null, 0 and "0" as equal', () => {
		const compareFunction = fuzzyCompare(true);

		expect(compareFunction(null, 0)).toEqual(false);
		expect(compareFunction(null, '0')).toEqual(false);
	});
});