dtourolle
ad48d89dfe
Formatting was configured but never enforced: `bun run format:check` reported 199 unformatted files and ran in no workflow and in no git hook, so .prettierrc (printWidth 100, trailing commas) described an intention rather than the tree. This is the one-time sweep that makes the check gateable. Whitespace and token-reflow only -- no behavioural change: `bun run check` reports 0 errors and all 1053 frontend tests pass before and after. Kept out of every other commit on purpose. A 199-file diff mixed with real changes is unreviewable, and the next commit turns format:check into a hard CI gate so this cannot silently accumulate again.
79 lines
2.7 KiB
TypeScript
79 lines
2.7 KiB
TypeScript
import { describe, it, expect } from "vitest";
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import type { MediaItem } from "$lib/api/types";
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import { buildHeroMix, shuffle } from "./heroMix";
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/** Minimal MediaItem for hero tests; `art: false` strips the image tags. */
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function item(id: string, art = true): MediaItem {
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return {
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id,
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name: `Item ${id}`,
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type: "Movie",
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primaryImageTag: art ? `tag-${id}` : undefined,
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} as MediaItem;
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}
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const hasArt = (i: MediaItem) => !!i.primaryImageTag;
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describe("shuffle", () => {
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it("returns a permutation without mutating the input", () => {
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const input = [1, 2, 3, 4, 5];
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const copy = [...input];
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const result = shuffle(input);
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expect(input).toEqual(copy);
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expect([...result].sort()).toEqual([...input].sort());
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});
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});
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describe("buildHeroMix", () => {
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it("returns empty for empty pools", () => {
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expect(buildHeroMix([[], []], hasArt)).toEqual([]);
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});
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it("caps the rotation at count", () => {
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const pool = Array.from({ length: 20 }, (_, i) => item(`a${i}`));
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expect(buildHeroMix([pool], hasArt, 6)).toHaveLength(6);
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});
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it("filters items without artwork", () => {
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const result = buildHeroMix([[item("a", false), item("b")]], hasArt);
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expect(result.map((i) => i.id)).toEqual(["b"]);
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});
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it("de-duplicates across pools", () => {
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const a = item("a");
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const result = buildHeroMix([[a], [a, item("b")]], hasArt);
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const ids = result.map((i) => i.id);
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expect(ids).toHaveLength(new Set(ids).size);
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expect(ids).toContain("a");
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expect(ids).toContain("b");
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});
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it("leads with an item from the first non-empty pool", () => {
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const personal = [item("p1"), item("p2"), item("p3")];
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const rest = [item("r1"), item("r2"), item("r3")];
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for (let run = 0; run < 20; run++) {
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const result = buildHeroMix([personal, rest], hasArt);
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expect(["p1", "p2", "p3"]).toContain(result[0].id);
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}
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});
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it("takes at most perPool items per pool before backfilling", () => {
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const a = [item("a1"), item("a2"), item("a3"), item("a4")];
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const b = [item("b1"), item("b2"), item("b3"), item("b4")];
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// count 4 with perPool 2: exactly 2 from each pool, no backfill needed.
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for (let run = 0; run < 20; run++) {
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const result = buildHeroMix([a, b], hasArt, 4, 2);
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const fromA = result.filter((i) => i.id.startsWith("a")).length;
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const fromB = result.filter((i) => i.id.startsWith("b")).length;
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expect(fromA).toBe(2);
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expect(fromB).toBe(2);
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}
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});
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it("backfills from leftovers when samples fall short of count", () => {
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const a = [item("a1"), item("a2"), item("a3"), item("a4"), item("a5"), item("a6")];
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const result = buildHeroMix([a], hasArt, 6, 2);
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expect(result).toHaveLength(6);
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});
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});
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