import { t, typeAsserts } from '../../index';

describe('nullish', () => {
  it('null', () => {
    expect.hasAssertions();
    const schema = t.null();

    expect(schema.validate(null)).toBe(true);
    expect(() => {
      typeAsserts(schema, null);
    }).not.toThrow();
  });

  it('undefined', () => {
    expect.hasAssertions();
    const schema = t.undefined();

    expect(schema.validate(undefined)).toBe(true);
    expect(() => {
      typeAsserts(schema, undefined);
    }).not.toThrow();
  });

  it('null optional', () => {
    expect.hasAssertions();
    const schema = t.null().optional();
    expect(schema.validate(undefined)).toBe(true);
    expect(() => {
      typeAsserts(schema, undefined);
    }).not.toThrow();
  });

  it('undefined optional', () => {
    expect.hasAssertions();
    const schema = t.undefined().optional();
    expect(schema.validate(undefined)).toBe(true);
    expect(() => {
      typeAsserts(schema, undefined);
    }).not.toThrow();
  });
});