78 lines
2.1 KiB
TypeScript
78 lines
2.1 KiB
TypeScript
import { describe, it, expect, vi, beforeAll, afterAll } from "vitest";
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import {
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calculateAge,
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formatISODate,
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parseISODate,
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} from "@/lib/computed/profile";
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describe("parseISODate", () => {
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it("空文字は undefined", () => {
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expect(parseISODate("")).toBeUndefined();
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});
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it("不正フォーマットは undefined", () => {
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expect(parseISODate("not-a-date")).toBeUndefined();
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});
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it("ローカル 0 時で返す（タイムゾーン跨ぎを避ける）", () => {
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const d = parseISODate("2000-01-15");
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expect(d).toBeDefined();
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expect(d?.getFullYear()).toBe(2000);
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expect(d?.getMonth()).toBe(0);
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expect(d?.getDate()).toBe(15);
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expect(d?.getHours()).toBe(0);
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});
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});
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describe("formatISODate", () => {
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it("undefined は空文字", () => {
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expect(formatISODate(undefined)).toBe("");
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});
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it("不正な Date は空文字", () => {
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expect(formatISODate(new Date("invalid"))).toBe("");
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});
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it("YYYY-MM-DD にゼロ埋めで整形", () => {
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expect(formatISODate(new Date(2024, 0, 5))).toBe("2024-01-05");
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expect(formatISODate(new Date(2024, 11, 31))).toBe("2024-12-31");
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});
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});
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describe("calculateAge", () => {
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beforeAll(() => {
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// テスト時点を 2026-05-09（日本時間）に固定する。
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vi.useFakeTimers();
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vi.setSystemTime(new Date(2026, 4, 9));
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});
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afterAll(() => {
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vi.useRealTimers();
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});
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it("空文字は空文字", () => {
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expect(calculateAge("")).toBe("");
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});
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it("不正フォーマットは空文字", () => {
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expect(calculateAge("hello")).toBe("");
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});
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it("誕生日を過ぎていれば加齢済みの年齢", () => {
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expect(calculateAge("2000-01-15")).toBe("26 歳");
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});
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it("誕生日前（同年内）は1引いた年齢", () => {
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expect(calculateAge("2000-12-31")).toBe("25 歳");
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});
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it("当日（誕生日ぴったり）は加齢済み", () => {
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expect(calculateAge("2000-05-09")).toBe("26 歳");
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});
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it("未来の生年月日は空文字（負の年齢を弾く）", () => {
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expect(calculateAge("2099-01-01")).toBe("");
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});
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});
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