Diffusion Ant (type-hints-typescript) Code

ant/examples/spec/date.js
899dad6b8a9etype-hints-typescript

date.js
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			import { test, summary } from './helpers.js';

			console.log('Date Tests\n');

			const BASE_TS = 1234567890000;
			const expectInvalid = (label, mutator) => {
			const dt = new Date(BASE_TS);
			mutator(dt);
			test(label, Number.isNaN(dt.getTime()), true);
			};

			const now1 = Date.now();
			test('Date.now() is number', typeof now1, 'number');
			test('Date.now() > 1970', now1 > 1000000000000, true);

			const d1 = new Date();
			test('new Date() is object', typeof d1, 'object');

			const d2 = new Date(BASE_TS);
			test('new Date(ts) is object', typeof d2, 'object');

			const t1 = Date.now();
			const t2 = Date.now();
			test('Date.now() is monotonic', t2 >= t1, true);

			const times = [];
			for (let i = 0; i < 3; i++) times.push(Date.now());
			test('multiple calls are numbers', times.every(t => typeof t === 'number'), true);

			const d = new Date(BASE_TS);
			test('getTime returns timestamp', d.getTime(), BASE_TS);
			test('getFullYear is number', typeof d.getFullYear(), 'number');
			test('getMonth is number', typeof d.getMonth(), 'number');
			test('getDate is number', typeof d.getDate(), 'number');
			test('getHours is number', typeof d.getHours(), 'number');
			test('getMinutes is number', typeof d.getMinutes(), 'number');
			test('getSeconds is number', typeof d.getSeconds(), 'number');
			test('getMilliseconds is number', typeof d.getMilliseconds(), 'number');
			test('getDay is number', typeof d.getDay(), 'number');

			test('toISOString is string', typeof d.toISOString(), 'string');
			test('toISOString contains T', d.toISOString().includes('T'), true);
			test('toString is string', typeof d.toString(), 'string');

			const d3 = new Date(BASE_TS);
			d3.setTime(555555555555);
			test('setTime updates time', d3.getTime(), 555555555555);

			expectInvalid('setTime() with no args invalidates', d => d.setTime());

			expectInvalid('setMilliseconds() with no args invalidates', d => d.setMilliseconds());

			expectInvalid('setSeconds() with no args invalidates', d => d.setSeconds());

			expectInvalid('setMinutes() with no args invalidates', d => d.setMinutes());

			expectInvalid('setHours() with no args invalidates', d => d.setHours());

			expectInvalid('setDate() with no args invalidates', d => d.setDate());

			expectInvalid('setMonth() with no args invalidates', d => d.setMonth());

			expectInvalid('setFullYear() with no args invalidates', d => d.setFullYear());

			const d12 = new Date(BASE_TS);
			d12.setFullYear(2025);
			test('setFullYear(2025) works', d12.getFullYear(), 2025);

			const d13 = new Date(BASE_TS);
			d13.setMonth(0);
			test('setMonth(0) sets January', d13.getMonth(), 0);

			const d14 = new Date(BASE_TS);
			d14.setDate(15);
			test('setDate(15) sets day', d14.getDate(), 15);

			const d15 = new Date(BASE_TS);
			d15.setHours(10);
			test('setHours(10) sets hour', d15.getHours(), 10);

			const d16 = new Date(BASE_TS);
			d16.setMinutes(30);
			test('setMinutes(30) sets minutes', d16.getMinutes(), 30);

			const d17 = new Date(BASE_TS);
			d17.setSeconds(45);
			test('setSeconds(45) sets seconds', d17.getSeconds(), 45);

			const d18 = new Date(BASE_TS);
			d18.setMilliseconds(500);
			test('setMilliseconds(500) sets ms', d18.getMilliseconds(), 500);

			expectInvalid('setTime(NaN) invalidates', d => d.setTime(NaN));
			expectInvalid('setFullYear(NaN) invalidates', d => d.setFullYear(NaN));
			expectInvalid('setMonth(NaN) invalidates', d => d.setMonth(NaN));
			expectInvalid('setDate(NaN) invalidates', d => d.setDate(NaN));
			expectInvalid('setHours(NaN) invalidates', d => d.setHours(NaN));
			expectInvalid('setMinutes(NaN) invalidates', d => d.setMinutes(NaN));
			expectInvalid('setSeconds(NaN) invalidates', d => d.setSeconds(NaN));
			expectInvalid('setMilliseconds(NaN) invalidates', d => d.setMilliseconds(NaN));

			summary();

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