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

export function testMath(): Result {
    return describe("Math", () => {
        test('E', () => {
            function getNapier():number {
                return Math.E
            }
            expect(getNapier()).toEqual(2.718281828459045);
        })
        test('LN10', () => {
            function getNatLog10():number {
                return Math.LN10;
            }
            expect(getNatLog10()).toEqual(2.302585092994046);
        })
        test('LN2', () => {
            function getNatLog2():number {
                return Math.LN2;
            }
            expect(getNatLog2()).toEqual(0.6931471805599453);
        })
        test('LOG10E', () => {
            function getLog10e():number {
                return Math.LOG10E;
            }
            expect(getLog10e()).toEqual(0.4342944819032518);
        })
        test('LOG2E', () => {
            function getLog2e():number {
                return Math.LOG2E;
            }
            expect(getLog2e()).toEqual(1.4426950408889634);
        })
        test('PI', () => {
            function calculateCircumference (radius:number):number {
                return 2 * Math.PI * radius;
            }
            expect(calculateCircumference(1)).toEqual(6.283185307179586);
        })
        test('SQRT1_2', () => {
            function getRoot1_2():number {
                return Math.SQRT1_2;
            }
            expect(getRoot1_2()).toEqual(0.7071067811865476);
        })
        test('SQRT2', () => {
            function getRoot2():number {
                return Math.SQRT2;
            }
            expect(getRoot2()).toEqual(1.4142135623730951);
        })
        
        test('abs', () => {
            function difference(a:number, b:number):number {
                return Math.abs(a - b);
            }
            expect(difference(3, 5)).toEqual(2);
            expect(difference(5, 3)).toEqual(2);
            expect(difference(1.23456, 7.89012)).toEqual(6.6555599999999995);
        })
        test('acos', () => {
            expect(Math.acos(-1)).toEqual(3.141592653589793);
            expect(Math.acos(0)).toEqual(1.5707963267948966);
            // 解决精度问题
            expect(Math.acos(1)).toEqual(0.0);
        })
        test('acosh', () => {
            // 解决精度问题
            expect(Math.acosh(1)).toEqual(0.0);
			expectNumber(Math.acosh(2)).toEqualDouble(1.3169578969248166);
            expectNumber(Math.acosh(2.5)).toEqualDouble(1.566799236972411);
        })
        test('asin', () => {
            expect(Math.asin(-1)).toEqual(-1.5707963267948966);
            // 解决精度问题
            expect(Math.asin(0)).toEqual(0.0);
            // expect(Math.asin(0.5)).toEqual(0.5235987755982989);
            expect(Math.asin(1)).toEqual(1.5707963267948966);
        })
        test('asinh', () => {
            expectNumber(Math.asinh(1)).toEqualDouble(0.881373587019543);
            expectNumber(Math.asinh(0)).toEqualDouble(0);
            expectNumber(Math.asinh(-1)).toEqualDouble(-0.881373587019543);
            expectNumber(Math.asinh(2)).toEqualDouble(1.4436354751788103);
        })
        test('atan', () => {
            expect(Math.atan(1)).toEqual(0.7853981633974483);
            // 解决精度问题
            expect(Math.atan(0)).toEqual(0.0);
        })
        test('atan2', () => {
            expect(Math.atan2(90, 15)).toEqual(1.4056476493802699);
            expect(Math.atan2(15, 90)).toEqual(0.16514867741462683);
        })
        test('atanh', () => {
            // 解决精度问题
            expect(Math.atanh(0)).toEqual(0.0);
            // expect(Math.atanh(0.5)).toEqual(0.5493061443340548);
        })
        test('cbrt', () => {
            // expect(Math.cbrt(-1)).toEqual(-1);
            // expect(Math.cbrt(0)).toEqual(0);
            // expect(Math.cbrt(1)).toEqual(1);
            // expect(Math.cbrt(2)).toEqual(1.2599210498948732);
        })
        test('ceil', () => {
            expect(Math.ceil(0.95)).toEqual(1);
            expect(Math.ceil(4)).toEqual(4);
            expect(Math.ceil(7.004)).toEqual(8);
            expect(Math.ceil(-7.004)).toEqual(-7);
        })
        test('clz32', () => {
            expect(Math.clz32(1)).toEqual(31);
            expect(Math.clz32(1000)).toEqual(22);
            expect(Math.clz32(0)).toEqual(32);
            expect(Math.clz32(3.5)).toEqual(30);
        })
        test('cos', () => {
            expect(Math.cos(0)).toEqual(1.0);
            expect(Math.cos(1)).toEqual(0.5403023058681398);
        })
        test('cosh', () => {
            // 解决精度问题
            expect(Math.cosh(0)).toEqual(1.0);
            expectNumber(Math.cosh(1)).toEqualDouble(1.5430806348152437);
            expectNumber(Math.cosh(-1)).toEqualDouble(1.5430806348152437);
        })
        test('exp', () => {
            expectNumber(Math.exp(-1)).toEqualDouble(0.36787944117144233);
            // 解决精度问题
            expect(Math.exp(0)).toEqual(1.0);
            expectNumber(Math.exp(1)).toEqualDouble(2.718281828459045);
        })
        test('expm1', () => {
            expectNumber(Math.expm1(1)).toEqualDouble(1.718281828459045);
            expectNumber(Math.expm1(-38)).toEqualDouble(-1);
        })
        test('floor', () => {
            expect(Math.floor(5.95)).toEqual(5);
            expect(Math.floor(5.05)).toEqual(5);
            expect(Math.floor(5)).toEqual(5);
            expect(Math.floor(-5.05)).toEqual(-6);
        })
        test('fround', () => {
            expect(Math.fround(1.5)).toEqual(1.5);
            expectNumber(Math.fround(1.337)).toEqualDouble(1.3370000123977661);
        })
        // test('hypot', () => {
            // expect(Math.hypot(3, 4)).toEqual(5);
            // expect(Math.hypot(5, 12)).toEqual(13);
            // expect(Math.hypot(3, 4, 5)).toEqual(7.0710678118654755);
            // expect(Math.hypot(-5)).toEqual(5);
        // })
        // test('imul', () => {
        //     expect(Math.imul(3, 4)).toEqual(12);
        //     expect(Math.imul(-5, 12)).toEqual(-60);
        // })
        test('log', () => {
            // 解决精度问题
            expect(Math.log(1)).toEqual(0.0);
            expect(Math.log(10)).toEqual(2.302585092994046);
        })
        test('log10', () => {
            // 解决精度问题
            expect(Math.log10(10)).toEqual(1.0);
            expect(Math.log10(100)).toEqual(2.0);
            expect(Math.log10(1)).toEqual(0.0);
        })
        test('log1p', () => {
            // 解决精度问题
            expect(Math.log1p(Math.E - 1)).toEqual(1.0);
            expect(Math.log1p(0)).toEqual(0.0);
        })
        test('log2', () => {
            // 解决精度问题
            expect(Math.log2(2)).toEqual(1.0);
            expect(Math.log2(1024)).toEqual(10.0);
            expect(Math.log2(1)).toEqual(0.0);
        })
        test('max', () => {
            expect(Math.max(1, 3, 2)).toEqual(3);
            expect(Math.max(-1, -3, -2)).toEqual(-1);
        })
        test('min', () => {
            expect(Math.min(2, 3, 1)).toEqual(1);
            expect(Math.min(-2, -3, -1)).toEqual(-3);
        })
        test('pow', () => {
            expectNumber(Math.pow(7, 3)).toEqualDouble(343);
            expectNumber(Math.pow(4, 0.5)).toEqualDouble(2);
        })
        test('random', () => {
            function getRandomInt(max:number):number {
              return Math.floor(Math.random() * max);
            }
            expect(getRandomInt(getRandomInt(1))).toEqual(0);
        })
        test('sign', () => {
            expect(Math.sign(3)).toEqual(1);
            expect(Math.sign(-3)).toEqual(-1);
            expect(Math.sign(0)).toEqual(0);
        })
        test('sin', () => {
            // 解决精度问题
            expect(Math.sin(0)).toEqual(0.0);
            expect(Math.sin(1)).toEqual(0.8414709848078965);
        })
        test('sinh', () => {
            // 解决精度问题
            expect(Math.sinh(0)).toEqual(0.0);
            expect(Math.sinh(1)).toEqual(1.1752011936438014);
        })
        test('sqrt', () => {
            function calcHypotenuse(a:number, b:number):number {
              return (Math.sqrt((a * a) + (b * b)));
            }
            // 解决精度问题
            expect(calcHypotenuse(3, 4)).toEqual(5.0);
            expect(calcHypotenuse(5, 12)).toEqual(13.0);
            expect(calcHypotenuse(0, 0)).toEqual(0.0);
        })
        test('tan', () => {
            // 解决精度问题
            expect(Math.tan(0)).toEqual(0.0);
            // expect(Math.tan(1)).toEqual(1.5574077246549023);
        })
        test('tanh', () => {
            expect(Math.tanh(-1)).toEqual(-0.7615941559557649);
            // 解决精度问题
            expect(Math.tanh(0)).toEqual(0.0);
            expect(Math.tanh(1)).toEqual(0.7615941559557649);
        })
        test('trunc', () => {
            expect(Math.trunc(13.37)).toEqual(13);
            expect(Math.trunc(42.84)).toEqual(42);
            expect(Math.trunc(0.123)).toEqual(0);
        })
		test('round', () => {
		    expect(Math.round(0.9)).toEqual(1);
		    expect(Math.round(5.95)).toEqual(6);
		    expect(Math.round(-5.05)).toEqual(-5);
		})
    })
}