import { describe, test, expect } from "vitest";
import { asStringArray } from "./json-array";

describe("asStringArray", () => {
  test("passes an array of strings through unchanged", () => {
    expect(asStringArray(["mild", "floral"])).toEqual(["mild", "floral"]);
  });

  test("returns an empty array for an empty array", () => {
    expect(asStringArray([])).toEqual([]);
  });

  test("drops non-string entries from a mixed array", () => {
    expect(asStringArray(["mild", 5, null, "floral", { a: 1 }])).toEqual(["mild", "floral"]);
  });

  test("returns an empty array for null", () => {
    expect(asStringArray(null)).toEqual([]);
  });

  test("returns an empty array for undefined", () => {
    expect(asStringArray(undefined)).toEqual([]);
  });

  test("returns an empty array for a plain object", () => {
    expect(asStringArray({ tasteTags: ["mild"] })).toEqual([]);
  });

  test("returns an empty array for a scalar string", () => {
    expect(asStringArray("mild")).toEqual([]);
  });
});