Operators.uts

import { describe, test, expect, Result } from './tests.uts'

export function testOperators(): Result {
    return describe("Operators", () => {
        test('+', () => {
            expect('hello ' + 'everyone').toEqual("hello everyone");
            function add(a: number, b: number): number {
                return a + b
            }
            expect(add(0, 0)).toEqual(0);
            expect(add(2, 2)).toEqual(4);
            expect(add(-2, -3)).toEqual(-5);
            expect(add(100, -100)).toEqual(0);
            expect(add(100, -0.00001)).toEqual(99.99999);
            expect(add(100, 0.00001)).toEqual(100.00001);
            expect(add(123456789, 987654321)).toEqual(1111111110);
            expect(add(1000000, 2000000)).toEqual(3000000);
            expect(add(-1000000, -2000000)).toEqual(-3000000);
            // kotlin 最大值 9223372036854775807，最小值 -9223372036854775808
            // 超出边界报错 error: The value is out of range‌
            // swift 最大值 9223372036854775807，最小值 -9223372036854775808
            // 超出边界报错 error: integer literal 'xxx' overflows when stored into 'Int'
            // web 最大值 1.7976931348623157e+308，最小值-1.7976931348623157e+308
            // 超出边界返回 Infinity
            // todo 统一处理
            // const max = 9223372036854775807
            // expect(add(max, max)).toEqual();
        })
        test('+=', () => {
            let a: number = 2;
            a += 3;
            expect(a).toEqual(5);
            let b: string = 'hello';
            b += ' world';
            expect(b).toEqual("hello world");
        })
        test('=', () => {
            let x: number = 2;
            const y: number = 3;
            expect(x).toEqual(2);
            x = y + 1;
            expect(x).toEqual(4);
            x = x * y
            expect(x).toEqual(12);
        })
        test('&', () => {
            const a: number = 5;     // 00000000000000000000000000000101
            const b: number = 3;     // 00000000000000000000000000000011
            expect(a & b).toEqual(1);  // 00000000000000000000000000000001
        })
        test('&=', () => {
            let a = 5;      // 00000000000000000000000000000101
            a &= 3;         // 00000000000000000000000000000011
            expect(a).toEqual(1);  // 00000000000000000000000000000001
        })
        test('～', () => {
            const a: number = 5;     // 00000000000000000000000000000101
            const b: number = -3;    // 11111111111111111111111111111101
            expect(~a).toEqual(-6);  // 11111111111111111111111111111010
            expect(~b).toEqual(2);  // 00000000000000000000000000000010
        })
        test('|', () => {
            const a: number = 5;        // 00000000000000000000000000000101
            const b: number = 3;        // 00000000000000000000000000000011
            expect(a | b).toEqual(7);  // 00000000000000000000000000000111
        })
        test('|=', () => {
            let a = 5;      // 00000000000000000000000000000101
            a |= 3;         // 00000000000000000000000000000011
            expect(a).toEqual(7);  // 00000000000000000000000000000111
        })
        test('^', () => {
            const a: number = 5;        // 00000000000000000000000000000101
            const b: number = 3;        // 00000000000000000000000000000011
            expect(a ^ b).toEqual(6);  // 00000000000000000000000000000110
        })
        test('^=', () => {
            let a = 5;      // 00000000000000000000000000000101
            a ^= 3;         // 00000000000000000000000000000011
            expect(a).toEqual(6);  // 00000000000000000000000000000110
        })
        test('--', () => {
            let x = 3;
            const y = x--;
            expect(`x:${x}, y:${y}`).toEqual("x:2, y:3");
            let a = 3;
            const b = --a;
            expect(`a:${a}, b:${b}`).toEqual("a:2, b:2");
        })
        test('/', () => {
            function divide (a: number, b: number): number {
                return a / b
            }
            expect(divide(10, 5)).toEqual(2);
            expect(divide(-10, -5)).toEqual(2);
            expect(divide(10, -5)).toEqual(-2);
            expect(divide(-10, 5)).toEqual(-2);
            expect(divide(0.1, 0.3)).toEqual(0.33333333333333337);
            expect(divide(0.3, 0.1)).toEqual(2.9999999999999996);
            expect(divide(1.5, 0.5)).toEqual(3);
            expect(divide(3, 2)).toEqual(1.5);
            // 暂不支持字面量
            // expect(3 / 2).toEqual(1.5);
            expect(divide(10, 3)).toEqual(3.3333333333333335);
            expect(divide(3, 10)).toEqual(0.3);
            expect(divide(1, 3)).toEqual(0.3333333333333333);
            expect(divide(1000000, 2000000)).toEqual(0.5);
            // kotlin java.lang.ArithmeticException: divide by zero
            // swift 返回 inf
            // web 返回 Infinity
            // todo 统一处理
            // expect(divide(1, 0)).toEqual();
        })
        test('/=', () => {
            let a:Number = 3;
            a /= 2;
            expect(a).toEqual(1.5);
        })
        test('==', () => {
            expect(1 == 1).toEqual(true);
            expect('hello' == 'hello').toEqual(true);
        })
        test('>', () => {
            expect(5 > 3).toEqual(true);
            expect(3 > 3).toEqual(false);
            expect('ab' > 'aa').toEqual(true);
        })
        test('++', () => {
            let x = 3;
            const y = x++;
            expect(`x:${x}, y:${y}`).toEqual("x:4, y:3");
            let a = 3;
            const b = ++a;
            expect(`a:${a}, b:${b}`).toEqual("a:4, b:4");
        })
        test('!=', () => {
            expect(1 != 1).toEqual(false);
            expect('hello' != 'hello').toEqual(false);
        })
        test('<<', () => {
            const a: number = 5;         // 00000000000000000000000000000101
            const b: number = 2;         // 00000000000000000000000000000010
            expect(a << b).toEqual(20);  // 00000000000000000000000000010100
        })
        test('<<=', () => {
            let a = 5; // 00000000000000000000000000000101
            a <<= 2;   // 00000000000000000000000000010100
            expect(a).toEqual(20);  // 00000000000000000000000000010100
        })
        test('<', () => {
            expect(5 < 3).toEqual(false);
            expect(3 < 3).toEqual(false);
            expect('aa' < 'ab').toEqual(true);
        })
        test('<=', () => {
            expect(5 <= 3).toEqual(false);
            expect(3 <= 3).toEqual(true);
            expect('aa' <= 'ab').toEqual(true);
        })
        test('&&', () => {
            const a: number = 3;
            const b: number = -2;
            expect(a > 0 && b > 0).toEqual(false);
        })
        // test('&&=', () => {
        // 	let a:Int = 1;
        // 	let b = 0;
        // 	a &&= 2;
        // 	expect(a).toEqual(2);
        // 	b &&= 2;
        // 	expect(b).toEqual(0);
        // })
        test('!', () => {
            const a: number = 3;
            const b: number = -2;
            expect(!(a > 0 || b > 0)).toEqual(false);
        })
        // test('??=', () => {
        // 	const a = { duration: 50 };
        // 	a.duration ??= 10;
        // 	expect(a.duration).toEqual(50);
        // 	a.speed ??= 25;
        // 	expect(a.duration).toEqual(25);
        // })
        test('||', () => {
            const a: number = 3;
            const b: number = -2;
            expect(a > 0 || b > 0).toEqual(true);
        })
        // test('||=', () => {
        // 	const a = { duration: 50, title: '' };
        // 	a.duration ||= 10;
        // 	expect(a.duration).toEqual(50);
        // 	a.title ||= 'title is empty.';
        // 	expect(a.title).toEqual("title is empty");
        // })
        test('*', () => {
            function multiply(a: number, b: number): number {
                return a * b
            } 
            expect(multiply(10, 0)).toEqual(0);
            expect(multiply(-10, 0)).toEqual(0);
            expect(multiply(10, 1)).toEqual(10);
            expect(multiply(1, 10)).toEqual(10);
            expect(multiply(1, -10)).toEqual(-10);
            expect(multiply(2, 3)).toEqual(6);
            expect(multiply(0.2, 0.3)).toEqual(0.06);
            expect(multiply(1.5, 6)).toEqual(9);
            expect(multiply(1000, 0.001)).toEqual(1);
            expect(multiply(1000, -0.001)).toEqual(-1);
            expect(multiply(1000, -0.001)).toEqual(-1);
            expect(multiply(9999, 9999)).toEqual(99980001);
            expect(multiply(100000000, 10)).toEqual(1000000000);
        })
        test('*=', () => {
            let a = 2;
            a *= 3;
            expect(a).toEqual(6);
        })
        // test('??', () => {
        // 	const foo = null ?? 'default string';
        // 	expect(foo).toEqual("default string");
        // 	const baz = 0 ?? 42;
        // 	expect(baz).toEqual(0);
        // })
        // test('?.', () => {
        // 	const adventurer = {
        // 	  name: 'Alice',
        // 	  cat: {
        // 	    name: 'Dinah'
        // 	  }
        // 	};
        // 	const dogName = adventurer.cat?.name;
        // 	console.log(dogName);
        // 	expect(dogName).toEqual(undefined);
        // })
        test('%', () => {
            expect(13 % 5).toEqual(3);
            expect(-13 % 5).toEqual(-3);
            expect(4 % 2).toEqual(0);
            expect(-4 % 2).toEqual(-0);
        })
        test('%=', () => {
            let a = 3;
            a %= 2;
            expect(a).toEqual(1);
        })
        test('>>', () => {
            const a: number = 5;          //  00000000000000000000000000000101
            const b: number = 2;          //  00000000000000000000000000000010
            const c: number = -5;         //  11111111111111111111111111111011
            expect(a >> b).toEqual(1); // 00000000000000000000000000000001
            expect(c >> b).toEqual(-2); // 11111111111111111111111111111110
        })
        test('>>=', () => {
            let a = 5;      //  00000000000000000000000000000101
            a >>= 2;        //  00000000000000000000000000000001
            expect(a).toEqual(1);
            let b = -5;     //  11111111111111111111111111111011
            b >>= 2;        //  11111111111111111111111111111110
            expect(b).toEqual(-2);
        })
        test('===', () => {
            // swift里，基础类型暂不支持!==,===对比
            expect(1 == 1).toEqual(true);
            expect('hello' == 'hello').toEqual(true);
        })
        test('!==', () => {
            // swift里，基础类型暂不支持!==,===对比
            expect(1 != 1).toEqual(false);
            expect('hello' != 'hello').toEqual(false);
        })
        test('-', () => {
            function subtract(a: number, b: number): number {
                return a - b
            }
            expect(subtract(3, 3)).toEqual(0);
            expect(subtract(5, 3)).toEqual(2);
            expect(subtract(-5, -3)).toEqual(-2);
            expect(subtract(-5, 3)).toEqual(-8);
            expect(subtract(5, -3)).toEqual(8);
            expect(subtract(5, 0)).toEqual(5);
            expect(subtract(1.5, 0.5)).toEqual(1);
            expect(subtract(5.5, 2)).toEqual(3.5);
            expect(subtract(5.5, 2)).toEqual(3.5);
            expect(subtract(2.22, 1.11)).toEqual(1.11);
            expect(subtract(10000000000, 1)).toEqual(9999999999);
            expect(subtract(-10000000000, 1)).toEqual(-10000000001);
        })
        test('-=', () => {
            let a = 2;
            a -= 3
            expect(a).toEqual(-1);
        })
        test('>>>', () => {
            const a: number = 5;          //  00000000000000000000000000000101
            const b: number = 2;          //  00000000000000000000000000000010
            const c: number = -5;         //  11111111111111111111111111111011
            expect(a >>> b).toEqual(1); // 00000000000000000000000000000001
            // expect(c >>> b).toEqual(1073741822); // 00111111111111111111111111111110
        })
        test('>>>=', () => {
            let a = 5; //  00000000000000000000000000000101
            a >>>= 2;  //  00000000000000000000000000000001
            expect(a).toEqual(1);
            let b = -5; // -00000000000000000000000000000101
            b >>>= 2;   //  00111111111111111111111111111110
            // expect(b).toEqual(1073741822);
        })
    })
}