Date & Time Assertions

These assertions test Date objects and time-related values.

to be a date

Aliases: to be a date, to be a Date

Success:

expect(new Date(), 'to be a date');
expect(new Date('2024-01-01'), 'to be a Date');
expect(new Date(Date.now()), 'to be a date');
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Failure:

expect('2024-01-01', 'to be a date');
// AssertionError: Expected '2024-01-01' to be a date
expect(1704067200000, 'to be a Date'); // Unix timestamp
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Negation:

expect('2024-01-01', 'not to be a date');
expect(1704067200000, 'not to be a Date');
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