import { describe, test, expect, Result } from './tests.uts' export function testNumber(): Result { return describe("Number", () => { test('toFixed', () => { function financial(x: Number): String { return x.toFixed(2); } expect(financial(123.456)).toEqual('123.46'); expect(financial(0.004)).toEqual("0.00"); expect(financial(0)).toEqual("0.00"); expect(financial(1)).toEqual("1.00"); let num1: number = -1.1 / 0.1 let num2: number = -1.1 / 0.1 let num3: number = -1.1 / -0.1 console.warn(num1) console.warn(num2) console.warn(num3) let obj = {"id":"3be2c600-894c-4231-aa56-82fd989cc961","result":{"result":[num1, num2, num3]}} console.log(JSON.stringify(obj)) }) test('isFinite', () => { expect(isFinite(1000 / 1)).toEqual(true); expect(isFinite(910)).toEqual(true); expect(isFinite(0)).toEqual(true); }) test('isInteger', () => { expect(Number.isInteger(12)).toEqual(true); expect(Number.isInteger(12.01)).toEqual(false); expect(Number.isInteger(-213123112.01)).toEqual(false); expect(Number.isInteger(-213123112)).toEqual(true); }) test('isNaN', () => { expect(isNaN(0)).toEqual(false); }) test('toPrecision', () => { expect(123.456.toPrecision(4)).toEqual("123.5"); expect(0.004.toPrecision(4)).toEqual("0.004000"); // expect(1.23e5.toPrecision(4)).toEqual("1.230e+5"); }) test('toString', () => { expect((10).toString()).toEqual("10"); expect((17).toString()).toEqual("17"); expect((17.2).toString()).toEqual("17.2"); expect((6).toString(2)).toEqual("110"); expect((254).toString(16)).toEqual("fe"); expect((-10).toString(2)).toEqual("-1010"); expect((-0xff).toString(2)).toEqual("-11111111"); }) test('valueOf', () => { expect((10).valueOf()).toEqual(10); expect((-10.2).valueOf()).toEqual(-10.2); expect((0xf).valueOf()).toEqual(15); }) // 数据转换操作示例 test('toX', () => { let num = 10.123 expect(num.toInt()).toEqual(10); expect(num.toDouble()).toEqual(10.123); }) test('numberEquals', () => { let a1 = 10.123 let b1 = 10.12300 let c1 = 10.12300002 expect(a1 == b1).toEqual(true); expect(a1 === b1).toEqual(true); expect(a1 !== 10.123001).toEqual(true); expect(a1 != c1).toEqual(true); let a2 = 0 let b2 = 0.0 expect(a2 == b2).toEqual(true); expect(a2 === b2).toEqual(true); let a3 = -1000 let b3 = -1000.0 expect(a3 == b3).toEqual(true); expect(a3 === b3).toEqual(true); let a4 = 123456789123456 let b4 = 123456789123456.0 expect(a4 == b4).toEqual(true); expect(a4 === b4 * 1.0).toEqual(true); let a5 = -123456789123456 let b5 = -123456789123456.01 expect(a5 != b5).toEqual(true); expect(a5 !== b5).toEqual(true); let a6 = 246.0 / 123 * 1.0 let b6 = 2 let c6 = 2.0 expect(a6 == b6).toEqual(true); expect(b6 === c6).toEqual(true); expect(b6 !== c6 * 1.001).toEqual(true); expect(b6 != c6 * 1.001).toEqual(true); let a7 = -10 * 123.2 let b7 = - 1232 expect(a7 == b7).toEqual(true); expect(a7 != b7 * -1).toEqual(true); let a8 = -101 * 123.201 expect(a8 == -12443.301).toEqual(true); expect(a8 === -12443.301).toEqual(true); expect(a8 !== -12443.301 * 0.999).toEqual(true); expect(a8 != -12443.301 * 0.999999).toEqual(true); let a9 = -0.02 * -123456 expect(a9 == 2469.12).toEqual(true); expect(a9 === 2469.12).toEqual(true); expect(a9 != 2469.1201).toEqual(true); let a10 = 123456789123456.123456789123456 let b10 = 123456789123456.123456789123456000000 expect(a10 == b10).toEqual(true); expect(a10 === b10).toEqual(true); }) }) }