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42 lines
1.5 KiB
TypeScript
42 lines
1.5 KiB
TypeScript
5 years ago
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import { assert } from 'chai';
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import { isLinkPreviewDateValid } from '../../util/isLinkPreviewDateValid';
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describe('isLinkPreviewDateValid', () => {
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it('returns false for non-numbers', () => {
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assert.isFalse(isLinkPreviewDateValid(null));
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assert.isFalse(isLinkPreviewDateValid(undefined));
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assert.isFalse(isLinkPreviewDateValid(Date.now().toString()));
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assert.isFalse(isLinkPreviewDateValid(new Date()));
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});
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it('returns false for zero', () => {
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assert.isFalse(isLinkPreviewDateValid(0));
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assert.isFalse(isLinkPreviewDateValid(-0));
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});
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it('returns false for NaN', () => {
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assert.isFalse(isLinkPreviewDateValid(0 / 0));
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});
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it('returns false for any infinite value', () => {
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assert.isFalse(isLinkPreviewDateValid(Infinity));
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assert.isFalse(isLinkPreviewDateValid(-Infinity));
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});
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it('returns false for timestamps more than a day from now', () => {
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const twoDays = 2 * 24 * 60 * 60 * 1000;
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assert.isFalse(isLinkPreviewDateValid(Date.now() + twoDays));
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});
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it('returns true for timestamps before tomorrow', () => {
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assert.isTrue(isLinkPreviewDateValid(Date.now()));
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assert.isTrue(isLinkPreviewDateValid(Date.now() + 123));
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assert.isTrue(isLinkPreviewDateValid(Date.now() - 123));
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assert.isTrue(isLinkPreviewDateValid(new Date(1995, 3, 20).valueOf()));
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assert.isTrue(isLinkPreviewDateValid(new Date(1970, 3, 20).valueOf()));
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assert.isTrue(isLinkPreviewDateValid(new Date(1969, 3, 20).valueOf()));
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assert.isTrue(isLinkPreviewDateValid(1));
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});
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});
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