import { describe, expect, it } from "vitest"; import {  getDefaultReviewExpandedFileIds,  getValidExplicitReviewFileIds,  getValidReviewFileIds,  removeReviewFileId,  toggleReviewFileId,} from "./reviewFileVisibility";import type { ReviewRenderableFile } from "./reviewModel"; function makeFile(id: string): ReviewRenderableFile {  return {    id,    cacheKey: id,    path: id,    previousPath: null,    changeType: "change",    additions: 0,    deletions: 0,    languageHint: null,    additionLines: [],    deletionLines: [],    rows: [],  };} describe("review file visibility", () => {  const files = [makeFile("a.ts"), makeFile("b.ts")];   it("defaults expanded files to every renderable file", () => {    expect(getDefaultReviewExpandedFileIds(files)).toEqual(["a.ts", "b.ts"]);    expect(getValidReviewFileIds(files, undefined)).toEqual(["a.ts", "b.ts"]);  });   it("filters stale cached file ids", () => {    expect(getValidReviewFileIds(files, ["missing.ts", "b.ts"])).toEqual(["b.ts"]);    expect(getValidExplicitReviewFileIds(files, undefined)).toEqual([]);    expect(getValidExplicitReviewFileIds(files, ["a.ts", "missing.ts"])).toEqual(["a.ts"]);  });   it("toggles and removes ids without mutating the original array", () => {    const original = ["a.ts"];     expect(toggleReviewFileId(original, "b.ts")).toEqual(["a.ts", "b.ts"]);    expect(toggleReviewFileId(original, "a.ts")).toEqual([]);    expect(removeReviewFileId(original, "a.ts")).toEqual([]);    expect(original).toEqual(["a.ts"]);  });});