import { describe, expect, it } from 'vitest';
import { nullable, optional } from './update-helpers';

describe('nullable', () => {
  it(`returns false for undefined`, () => {
    // Act
    const result = nullable(undefined, (val) => ({ test: val }));

    // Assert
    expect(result).toBe(false);
  });

  it.each([null, '', ' ', 'test'])(`returns object for %p value`, (value) => {
    // Act
    const result = nullable(value, (val) => ({ test: val }));

    // Assert
    expect(result).toEqual({ test: value });
  });
});

describe('optional', () => {
  it(`returns false for undefined value`, () => {
    // Act
    const result = optional(undefined, (val) => ({ test: val }));

    // Assert
    expect(result).toBe(false);
  });

  it(`returns false for null value`, () => {
    // Act
    const result = optional(null, (val) => ({ test: val }));

    // Assert
    expect(result).toBe(false);
  });

  it.each(['', ' ', 'test'])(`returns object for %p value`, (value) => {
    // Act
    const result = optional(value, (val) => ({ test: val }));

    // Assert
    expect(result).toEqual({ test: value });
  });
});