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LibJS: Add Date.prototype.setDate()

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Idan Horowitz 2021-06-06 16:25:33 +03:00 • committed by Linus Groh
parent 3eb05d9413
commit b893963651
4 changed files with 73 additions and 0 deletions
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47
Userland/Libraries/LibJS/Tests/builtins/Date/Date.prototype.setDate.js Normal file
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test("no arguments", () => {
let date = new Date(2021, 0, 1);
date.setDate();
expect(date.getTime()).toBe(NaN);
});
test("NaN or undefined as only argument", () => {
let date = new Date(2021, 0, 1);
date.setDate(NaN);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setDate(undefined);
expect(date.getTime()).toBe(NaN);
date = new Date(2021, 0, 1);
date.setDate("a");
expect(date.getTime()).toBe(NaN);
});
test("Day as argument", () => {
let date = new Date(2021, 0, 1);
date.setDate(17);
expect(date.getDate()).toBe(17);
expect(date.getMonth()).toBe(0);
expect(date.getFullYear()).toBe(2021);
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.setDate(NaN);
expect(date.getTime()).toBe(NaN);
date.setDate(16);
expect(date.getFullYear()).toBe(2021);
expect(date.getMonth()).toBe(0);
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);
});