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LibJS/Tests: Verify the parsing of Date at maximum and minimum values

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Shannon Booth 2024-05-26 23:13:42 +12:00
parent 0bb5421515
commit 4d099c91cd
1 changed files with 20 additions and 0 deletions
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20
Userland/Libraries/LibJS/Tests/builtins/Date/Date.parse.js
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@ -203,3 +203,23 @@ test("Round trip Date.prototype.to*String", () => {
expect(Date.parse(epoch.toISOString())).toBe(epoch.valueOf());
expect(Date.parse(epoch.toUTCString())).toBe(epoch.valueOf());
});
test("Date parsing of minimum and maximum values", () => {
const minDateStr = "-271821-04-20T00:00:00.000Z";
const minDate = new Date(-8640000000000000);
expect(minDate.toISOString()).toBe(minDateStr);
expect(Date.parse(minDateStr)).toBe(minDate.valueOf());
const maxDateStr = "+275760-09-13T00:00:00.000Z";
const maxDate = new Date(8640000000000000);
expect(maxDate.toISOString()).toBe(maxDateStr);
expect(Date.parse(maxDateStr)).toBe(maxDate.valueOf());
const belowRange = "-271821-04-19T23:59:59.999Z";
const aboveRange = "+275760-09-13T00:00:00.001Z";
expect(Date.parse(belowRange)).toBe(NaN);
expect(Date.parse(aboveRange)).toBe(NaN);
});