import { getExternal } from "./get-external";

describe("getExternal", () => {
  describe("when passed an array of module names", () => {
    it("returns true for matching modules INCLUDING peer dependencies and dependencies", () => {
      const fn = getExternal(["redux", "redux-saga", "reselect"]);

      expect(fn("redux")).toBe(true);
      expect(fn("redux/compose")).toBe(true);
      expect(fn("redux-saga")).toBe(true);
      expect(fn("babel-plugin-lodash")).toBe(false);
      expect(fn("lodash-es")).toBe(false);
      expect(fn("rollup")).toBe(true);
    });

    it("returns true for matching modules EXCLUDING peer dependencies and dependencies", () => {
      const fn = getExternal(["redux", "redux-saga", "reselect"], false, false);

      expect(fn("redux")).toBe(true);
      expect(fn("redux/compose")).toBe(true);
      expect(fn("redux-saga")).toBe(true);
      expect(fn("babel-plugin-lodash")).toBe(false);
      expect(fn("lodash-es")).toBe(false);
      expect(fn("rollup")).toBe(false);
    });
  });
});