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Feature 19 follow-up: calendar week starts on Sunday (#230)

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Co-authored-by: dev_agent <17+dev_agent@code.cubecraftcreations.com>
Co-committed-by: dev_agent <17+dev_agent@code.cubecraftcreations.com>
This commit was merged in pull request #230.
This commit is contained in:
dev_agent
2026-09-24 19:33:22 -04:00
committed by approver_agent
parent 5650a1f5a2
commit d3c52974f5
6 changed files with 74 additions and 8 deletions
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admin/src/schedule/cycle.test.ts
+18
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@@ -58,6 +58,24 @@ describe("calendar helpers", () => {
expect(weekdayOf("2026-09-06")).toBe(6);
});
it("weekdayOf keeps the stored Monday=0 .. Sunday=6 numbering (display order is separate)", () => {
// A full known week plus dates across month and year ends.
expect(
[
"2026-09-07",
"2026-09-08",
"2026-09-09",
"2026-09-10",
"2026-09-11",
"2026-09-12",
"2026-09-13",
].map(weekdayOf),
).toEqual([0, 1, 2, 3, 4, 5, 6]);
expect(weekdayOf("2026-11-01")).toBe(6); // Sunday
expect(weekdayOf("2027-01-01")).toBe(4); // Friday
expect(weekdayOf("2024-02-29")).toBe(3); // Thursday
});
it("monthStart shifts across year ends", () => {
expect(monthStart("2026-12-15", 1)).toBe("2027-01-01");
expect(monthStart("2026-01-31", -1)).toBe("2025-12-01");