import { describe, expect, it } from "vitest"; import { DEFAULT_MODEL, MODEL_OPTIONS, normalizeModelSlug, resolveModelSlug } from "./model"; describe("normalizeModelSlug", () => {  it("maps known aliases to canonical slugs", () => {    expect(normalizeModelSlug("5.3")).toBe("gpt-5.3-codex");    expect(normalizeModelSlug("gpt-5.3")).toBe("gpt-5.3-codex");  });   it("returns null for empty or missing values", () => {    expect(normalizeModelSlug("")).toBeNull();    expect(normalizeModelSlug("   ")).toBeNull();    expect(normalizeModelSlug(null)).toBeNull();    expect(normalizeModelSlug(undefined)).toBeNull();  });   it("preserves non-aliased model slugs", () => {    expect(normalizeModelSlug("gpt-5.2")).toBe("gpt-5.2");    expect(normalizeModelSlug("gpt-5.2-codex")).toBe("gpt-5.2-codex");  });}); describe("resolveModelSlug", () => {  it("returns default for missing and unknown models", () => {    expect(resolveModelSlug(undefined)).toBe(DEFAULT_MODEL);    expect(resolveModelSlug("gpt-4.1")).toBe(DEFAULT_MODEL);  });   it("resolves only supported model options", () => {    for (const model of MODEL_OPTIONS) {      expect(resolveModelSlug(model)).toBe(model);    }  });});