pretty-var-export/src/handlers/WeakSet/WeakSetHandler.spec.ts

Export any value to valid and equivalent JavaScript code

import colors from '../../colors/colors';
import indent from '../../indent/indent';
import WeakSetHandler from './WeakSetHandler';

describe('WeakSetHandler.test()', () => {
	it('should recognize empty sets', () => {
		const subject = new WeakSet();
		expect(WeakSetHandler.test(subject)).toBe(true);
	});
	it('should recognize non-empty set', () => {
		const subject = new WeakSet([{}, {}, () => {}, []]);
		expect(WeakSetHandler.test(subject)).toBe(true);
	});
	it('should not confuse with Set', () => {
		const subject = new Set();
		expect(WeakSetHandler.test(subject)).toBe(false);
	});
	it('should not confuse with array', () => {
		const subject = [];
		expect(WeakSetHandler.test(subject)).toBe(false);
	});
	it('should not confuse with Objects', () => {
		const subject = {};
		expect(WeakSetHandler.test(subject)).toBe(false);
	});
});

describe('WeakSetHandler.format()', () => {
	it('should output Items Unknown', () => {
		const set = new WeakSet();
		const result = WeakSetHandler.format(set);
		const formatted = indent.removeAll(colors.unstyle(result));
		expect(formatted).toBe('newWeakSet(/*ItemsUnknown*/)');
	});
});