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LibJS: Add Date.prototype.setMonth()

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Idan Horowitz 2021-06-06 16:26:29 +03:00 • committed by Linus Groh
parent 59034554a4
commit a93b1c7ea0
4 changed files with 124 additions and 0 deletions
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87
Userland/Libraries/LibJS/Tests/builtins/Date/Date.prototype.setMonth.js Normal file
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test("no arguments", () => {
let date = new Date(2021, 0, 1);
date.setMonth();
expect(date.getTime()).toBe(NaN);
});
test("NaN or undefined as only argument", () => {
let date = new Date(2021, 0, 1);
date.setMonth(NaN);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setMonth(undefined);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setMonth("a");
expect(date.getTime()).toBe(NaN);
});
test("Only month as argument", () => {
let date = new Date(2021, 0, 1);
date.setMonth(7);
expect(date.getFullYear()).toBe(2021);
expect(date.getMonth()).toBe(7);
expect(date.getDate()).toBe(1);
expect(date.getHours()).toBe(0);
expect(date.getMinutes()).toBe(0);
expect(date.getSeconds()).toBe(0);
expect(date.getMilliseconds()).toBe(0);
});
test("Month and date as arguments", () => {
let date = new Date(2021, 0, 1);
date.setMonth(7, 3);
expect(date.getFullYear()).toBe(2021);
expect(date.getMonth()).toBe(7);
expect(date.getDate()).toBe(3);
expect(date.getHours()).toBe(0);
expect(date.getMinutes()).toBe(0);
expect(date.getSeconds()).toBe(0);
expect(date.getMilliseconds()).toBe(0);
});
test("NaN or undefined in any arguments", () => {
let date = new Date(2021, 0, 1);
date.setMonth(NaN, 3);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setMonth(2021, NaN);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setMonth(undefined, 3);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setMonth(2021, undefined);
expect(date.getTime()).toBe(NaN);
date.setMonth(3, 16);
expect(date.getFullYear()).toBe(2021);
expect(date.getMonth()).toBe(3);
expect(date.getDate()).toBe(16);
expect(date.getHours()).toBe(0);
expect(date.getMinutes()).toBe(0);
expect(date.getSeconds()).toBe(0);
expect(date.getMilliseconds()).toBe(0);
});
test("Make Invalid Date valid again", () => {
let date = new Date(2021, 0, 1);
date.setMonth(NaN, 3, 16);
expect(date.getTime()).toBe(NaN);
date.setMonth(3, 16);
expect(date.getFullYear()).toBe(2021);
expect(date.getMonth()).toBe(3);
expect(date.getDate()).toBe(16);
expect(date.getHours()).toBe(0);
expect(date.getMinutes()).toBe(0);
expect(date.getSeconds()).toBe(0);
expect(date.getMilliseconds()).toBe(0);
});