import { isNumber } from './index';

describe('测试 types 模块 isNumber 方法', () => {
  test('数字类型的字符串', () => {
    expect(isNumber('11')).toBe(true);
  });
  test('非数字类型字符串', () => {
    expect(isNumber('undefined')).toBe(false);
  });

  test('空字符串', () => {
    expect(isNumber('')).toBe(false);
  });

  describe('数值类型', () => {
    test('正整数', () => {
      expect(isNumber(1)).toBe(true);
    });
    test('正-浮点数', () => {
      expect(isNumber(1.1)).toBe(true);
    });
    test('负整数', () => {
      expect(isNumber(-1)).toBe(true);
    });

    test('负-浮点数', () => {
      expect(isNumber(-1.1)).toBe(true);
    });
  });
});