import { describe, expect, it } from "vitest"; import { getAppModelOptions, normalizeCustomModelSlugs } from "./appSettings"; describe("normalizeCustomModelSlugs", () => {  it("normalizes aliases, removes built-ins, and deduplicates values", () => {    expect(      normalizeCustomModelSlugs([        " custom/internal-model ",        "gpt-5.3-codex",        "5.3",        "custom/internal-model",        "",        null,      ]),    ).toEqual(["custom/internal-model"]);  });}); describe("getAppModelOptions", () => {  it("appends saved custom models after the built-in options", () => {    const options = getAppModelOptions(["custom/internal-model"]);     expect(options.map((option) => option.slug)).toEqual([      "gpt-5.3-codex",      "gpt-5.3-codex-spark",      "gpt-5.2-codex",      "gpt-5.2",      "custom/internal-model",    ]);  });   it("keeps the currently selected custom model available even if it is no longer saved", () => {    const options = getAppModelOptions([], "custom/selected-model");     expect(options.at(-1)).toEqual({      slug: "custom/selected-model",      name: "custom/selected-model",      isCustom: true,    });  });});