43 lines
1.4 KiB
TypeScript
43 lines
1.4 KiB
TypeScript
import { describe, it, expect } from "vitest";
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import { makeFirstCharUpper, formatDate, getRandomFallbackImage } from "../../../app/utils/helper";
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describe("helper utilities", () => {
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it("makeFirstCharUpper should uppercase first char", () => {
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expect(makeFirstCharUpper("")).toBe("");
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expect(makeFirstCharUpper("hello")).toBe("Hello");
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expect(makeFirstCharUpper("Hello")).toBe("Hello");
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});
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it("formatDate should format ISO strings to YYYY-MM-DD or return empty for invalid", () => {
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expect(formatDate("")).toBe("");
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expect(formatDate("not-a-date")).toBe("");
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expect(formatDate("2020-03-05T12:00:00Z")).toBe("2020-03-05");
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expect(formatDate("2021-12-31")).toBe("2021-12-31");
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});
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it("getRandomFallbackImage should be deterministic with seed and stable without seed", () => {
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const firstNoSeed = getRandomFallbackImage();
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expect(firstNoSeed).toBe("/404/1.webp");
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const a = getRandomFallbackImage("seed-123");
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const b = getRandomFallbackImage("seed-123");
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expect(a).toBe(b);
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const c = getRandomFallbackImage("other-seed");
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// different seed likely different index, but at least ensure value is from list
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const allowed = [
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"/404/1.webp",
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"/404/2.webp",
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"/404/3.webp",
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"/404/4.webp",
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"/404/5.webp",
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"/404/6.webp",
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"/404/7.webp",
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"/404/8.webp",
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"/404/9.webp",
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];
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expect(allowed).toContain(a);
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expect(allowed).toContain(c);
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});
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});
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