signal-desktop/ts/test/linkPreviews/isLinkPreviewDateValid_test.ts

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2020-09-28 23:46:31 +00:00
import { assert } from 'chai';
import { isLinkPreviewDateValid } from '../../linkPreviews/isLinkPreviewDateValid';
describe('isLinkPreviewDateValid', () => {
it('returns false for non-numbers', () => {
assert.isFalse(isLinkPreviewDateValid(null));
assert.isFalse(isLinkPreviewDateValid(undefined));
assert.isFalse(isLinkPreviewDateValid(Date.now().toString()));
assert.isFalse(isLinkPreviewDateValid(new Date()));
});
it('returns false for zero', () => {
assert.isFalse(isLinkPreviewDateValid(0));
assert.isFalse(isLinkPreviewDateValid(-0));
});
it('returns false for NaN', () => {
assert.isFalse(isLinkPreviewDateValid(0 / 0));
});
it('returns false for any infinite value', () => {
assert.isFalse(isLinkPreviewDateValid(Infinity));
assert.isFalse(isLinkPreviewDateValid(-Infinity));
});
it('returns false for timestamps more than a day from now', () => {
const twoDays = 2 * 24 * 60 * 60 * 1000;
assert.isFalse(isLinkPreviewDateValid(Date.now() + twoDays));
});
it('returns true for timestamps before tomorrow', () => {
assert.isTrue(isLinkPreviewDateValid(Date.now()));
assert.isTrue(isLinkPreviewDateValid(Date.now() + 123));
assert.isTrue(isLinkPreviewDateValid(Date.now() - 123));
assert.isTrue(isLinkPreviewDateValid(new Date(1995, 3, 20).valueOf()));
assert.isTrue(isLinkPreviewDateValid(new Date(1970, 3, 20).valueOf()));
assert.isTrue(isLinkPreviewDateValid(new Date(1969, 3, 20).valueOf()));
assert.isTrue(isLinkPreviewDateValid(1));
});
});