96 lines
3.2 KiB
TypeScript
96 lines
3.2 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import {
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addDays,
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addMonths,
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describeRecurrence,
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isFinished,
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listOccurrences,
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occurrenceDate,
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type Recurrence,
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} from "./recurrence";
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const rule = (over: Partial<Recurrence>): Recurrence => ({
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frequency: "monthly",
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interval: 1,
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monthlyMode: "day",
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startDate: "2026-01-31",
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endDate: null,
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count: null,
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...over,
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});
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describe("tarih aritmetiği", () => {
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it("gün ve ay ekleme, ay sonu taşması", () => {
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expect(addDays("2026-12-30", 3)).toBe("2027-01-02");
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expect(addDays("2028-03-01", -1)).toBe("2028-02-29");
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expect(addMonths("2026-01-31", 1)).toBe("2026-02-28");
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expect(addMonths("2026-01-31", 1, 31)).toBe("2026-02-28");
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expect(addMonths("2026-11-15", 3)).toBe("2027-02-15");
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expect(addMonths("2026-04-10", 0, "last")).toBe("2026-04-30");
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});
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});
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describe("occurrenceDate", () => {
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it("aylık: başlangıç günü korunur, ayda yoksa son gün", () => {
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const r = rule({});
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expect([0, 1, 2, 3].map((i) => occurrenceDate(r, i))).toEqual([
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"2026-01-31",
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"2026-02-28",
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"2026-03-31",
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"2026-04-30",
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]);
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});
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it("aylık son gün modu (artık yıl dahil)", () => {
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const r = rule({ monthlyMode: "last", startDate: "2028-01-10" });
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expect([0, 1, 2].map((i) => occurrenceDate(r, i))).toEqual([
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"2028-01-31",
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"2028-02-29",
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"2028-03-31",
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]);
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});
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it("günlük, haftalık (aralıkla), yıllık (29 Şubat)", () => {
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expect(
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occurrenceDate(rule({ frequency: "daily", interval: 3, startDate: "2026-11-30" }), 1),
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).toBe("2026-12-03");
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expect(
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occurrenceDate(rule({ frequency: "weekly", interval: 2, startDate: "2026-11-02" }), 2),
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).toBe("2026-11-30");
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const y = rule({ frequency: "yearly", startDate: "2028-02-29" });
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expect([1, 4].map((i) => occurrenceDate(y, i))).toEqual(["2029-02-28", "2032-02-29"]);
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});
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});
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describe("listOccurrences", () => {
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it("tekrar sayısı, bitiş tarihi ve ufuk sınırları", () => {
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const r = rule({ startDate: "2026-01-05", count: 3 });
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expect(listOccurrences(r, "2030-01-01").map((o) => o.date)).toEqual([
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"2026-01-05",
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"2026-02-05",
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"2026-03-05",
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]);
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expect(isFinished(r, 3)).toBe(true);
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const e = rule({ startDate: "2026-01-05", endDate: "2026-02-10" });
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expect(listOccurrences(e, "2030-01-01")).toHaveLength(2);
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const h = rule({ startDate: "2026-01-05" });
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expect(listOccurrences(h, "2026-04-05").map((o) => o.index)).toEqual([0, 1, 2, 3]);
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expect(listOccurrences(h, "2026-04-05", 2).map((o) => o.index)).toEqual([2, 3]);
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expect(isFinished(h, 100)).toBe(false);
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});
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});
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describe("describeRecurrence", () => {
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it("Türkçe açıklama", () => {
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expect(describeRecurrence(rule({ startDate: "2026-11-03" }))).toBe("Her ay 3. gün");
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expect(describeRecurrence(rule({ monthlyMode: "last" }))).toBe("Her ayın son günü");
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expect(
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describeRecurrence(rule({ frequency: "weekly", interval: 2, startDate: "2026-11-02" })),
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).toBe("2 haftada bir Pazartesi");
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expect(describeRecurrence(rule({ frequency: "yearly", startDate: "2026-03-15" }))).toBe(
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"Her yıl 15 Mart",
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);
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expect(describeRecurrence(rule({ frequency: "daily" }))).toBe("Her gün");
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});
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});
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