vue-select/tests/unit/OptionKey.spec.js

import Select from "../../src/components/Select.vue";

describe("Serializing Option Keys", () => {
  const getOptionKey = Select.props.getOptionKey.default;

  it("can serialize strings to a key", () => {
    expect(getOptionKey("vue")).toBe("vue");
  });

  it("can serialize integers to a key", () => {
    expect(getOptionKey(1)).toBe(1);
  });

  it("can serialize objects to a key", () => {
    expect(getOptionKey({ label: "vue" })).toBe('{"label":"vue"}');
  });

  it("will use an ID property if the object contains one", () => {
    expect(getOptionKey({ id: 1 })).toBe(1);
    expect(getOptionKey({ id: "one" })).toBe("one");
    expect(getOptionKey({ id: { im: "a nested object" } })).toEqual({
      im: "a nested object"
    });
  });
});