Array.uts

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

export function testArray(): Result {
    return describe("Array", () => {
		
		test('constructor', () => {
			// 构造器测试
			let a1 = [1,2,3]
			expect(a1).toEqual([1,2,3]);
			let a2 = [1,'2',3]
			expect(a2).toEqual([1,'2',3]);
			let a3 = new Array(1,2,3);
			expect(a3).toEqual(new Array(1,2,3));
			let a4 = new Array(1,'2',3);
			expect(a4).toEqual(new Array(1,'2',3));
			let a5 = Array(1,2,3);
			expect(a5).toEqual(Array(1,2,3));
			let a6 = Array(1,'2','3')
			expect(a6).toEqual(Array(1,'2','3'));
		})
		
		test('equals', () => {
			// 构造器测试
			let a1 = [1,2,3]
			let a2 = [1,2,3]
			let equalsRet = (a1 == a2)
			console.log(equalsRet)
			expect(equalsRet).toEqual(false);
			
		})
		
        test('length', () => {
            const arr: string[] = ['shoes', 'shirts', 'socks', 'sweaters'];
            expect(arr.length).toEqual(4);
            expect(arr[0]).toEqual('shoes');
            expect(arr[1]).toEqual('shirts');
            // expect(arr[4]).toEqual(null);
            const numbers: number[] = [1, 2, 3, 4, 5];
            if (numbers.length > 3) {
              numbers.length = 3;
            }
            expect(numbers.length).toEqual(3);
            expect(numbers).toEqual([1, 2, 3]);
            expect([].length).toEqual(0);
            
            // 1. web: 最大长度 2^32-1
            // 超出边界报错: RangeError: Invalid array length
            // 2. kotlin: 最大长度 2^31-1
            // 超出边界报错: Error: targetMethod error::java.lang.OutOfMemoryError: Failed to allocate a 420546432 byte allocation with 6291456 free bytes and 300MB until OOM, target footprint 295113520, growth limit 603979776
            // 3. swift: 最大长度和内存有关
            // 超出边界没有返回信息
        })
        test("concat", () => {
            expect(['a', 'b', 'c'].concat(['d', 'e', 'f'])).toEqual(["a", "b", "c", "d", "e", "f"]);
            expect([1, 2, 3].concat([4, 5, 6])).toEqual([1, 2, 3, 4, 5, 6]);
            expect([''].concat([''])).toEqual(["", ""]);
            const num1: number[] = [1, 2, 3];
            const num2: number[] = [4, 5, 6];
            const num3: number[] = [7, 8, 9];
            const numbers = num1.concat(num2, num3);
            expect(numbers).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9]);
        })
        test("copyWithin", () => {
            const arr: string[] =  ['a', 'b', 'c', 'd', 'e'];
            expect(arr.copyWithin(0, 3, 4)).toEqual(["d", "b", "c", "d", "e"]);
            expect(arr.copyWithin(1, 3)).toEqual(["d", "d", "e", "d", "e"]);
            const arr2: number[] = [1, 2, 3, 4, 5];
            expect(arr2.copyWithin(-2)).toEqual([1, 2, 3, 1, 2]);
            expect(arr2.copyWithin(-2, -3, -1)).toEqual([1, 2, 3, 3, 1]);
        })
        test("every", () => {
            const isBelowThreshold = (currentValue:number):boolean=> currentValue < 40;
            const array1: number[] = [1, 30, 39, 29, 10, 13];
            const array2: number[] = [1, 30, 39, 29, 10, 13, 41];
            expect(array1.every(isBelowThreshold)).toEqual(true);
            expect(array2.every(isBelowThreshold)).toEqual(false);
            const array3: number[] = [1, 2, 3];
            array3.every((element:number, index:number, array:number[]):boolean => {
                expect(array[index]).toEqual(element);
                return true;
            })
        })
        test("fill", () => {
            const array1: number[] = [1, 2, 3, 4];
            expect(array1.fill(0, 2, 4)).toEqual([1, 2, 0, 0]);
            expect(array1.fill(5, 1)).toEqual([1, 5, 5, 5]);
            expect(array1.fill(6)).toEqual([6, 6, 6, 6]);
            const array2: number[]= [1, 2, 3]
            expect(array2.fill(4)).toEqual([4, 4, 4]);
            const array3: number[]= [0, 0]
            expect(array3.fill(1, null)).toEqual([1, 1]);
            expect(array3.fill(1, 0, 1.5)).toEqual([1, 1]);
        })
        test("filter", () => {
            const words: string[] = ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present'];
            const result = words.filter((word:string):boolean => word.length > 6);
            expect(result).toEqual(["exuberant", "destruction", "present"]);
            const array1: number[] = [-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];
            const isPrime = array1.filter((num:number):boolean => {
                for (let i = 2; num > i; i++) {
                    // swift里，基础类型暂不支持!==,===对比
                    if (num % i == 0) {
                        return false;
                    }
                }
                return num > 1;
            })
            expect(isPrime).toEqual([2, 3, 5, 7, 11, 13]);
            const array2: number[] = [1, 2, 3];
            array2.filter((element:number, index:number, array:number[]):boolean => {
                expect(array[index]).toEqual(element);
                return true;
            })
        })
        test("find", () => {
            const array1: number[] = [5, 12, 8, 130, 44];
            const found1 = array1.find((element:number):boolean => element > 10);
            expect(found1).toEqual(12);
            const found2 = array1.find((element:number):boolean => element < 5);
            expect(found2).toEqual(null);
            const array2: number[] = [1, 2, 3];
            array2.find((element:number, index:number, array:number[]):boolean => {
                expect(array[index]).toEqual(element);
                return true;
            })
        })
        test("findIndex", () => {
            const array1: number[] = [5, 12, 8, 130, 44];
            const isLargeNumber = (element:number):boolean => element > 13;
            expect(array1.findIndex(isLargeNumber)).toEqual(3);
            const array2: number[] = [10, 11, 12];
            expect(array2.findIndex(isLargeNumber)).toEqual(-1);
            const array3: number[] = [1, 2, 3];
            array3.findIndex((element:number, index:number, array:number[]):boolean => {
                expect(array[index]).toEqual(element);
                return true;
            })
        })
        test("flat", () => {
            const arr1: any[] = [0, 1, 2, [3, 4]];
            expect(arr1.flat()).toEqual([0, 1, 2, 3, 4]);
            const arr2: any[] = [0, 1, 2, [[[3, 4]]]];
            expect(arr2.flat(2)).toEqual([0, 1, 2, [3, 4]]);
            const arr3: any[] = [1, 2, [3, 4, [5, 6]]];
            expect(arr3.flat(2)).toEqual([1, 2, 3, 4, 5, 6]);
        })
        test("forEach", () => {
            const array1: string[] = ['a', 'b', 'c'];
            array1.forEach((element:string, index:number) => {
                expect(array1[index]).toEqual(element)
            });
            
            const items: string[] = ['item1', 'item2', 'item3'];
            const copyItems: string[] = [];
            items.forEach((item:string) => {
              copyItems.push(item);
            });
            expect(copyItems).toEqual(items)
        })
        test("includes", () => {
            const array1: number[] = [1, 2, 3];
            expect(array1.includes(2)).toEqual(true);
            const pets: string[] = ['cat', 'dog', 'bat'];
            expect(pets.includes('cat')).toEqual(true);
            expect(pets.includes('at')).toEqual(false);
            const array2: string[] = ['a', 'b', 'c'];
            expect(array2.includes('c', 3)).toEqual(false);
            expect(array2.includes('c', 100)).toEqual(false);
        })
        test("indexOf", () => {
			
			let raw = {}
			let arr = new Array()
			arr.push({});
			arr.push({});
			arr.push(raw);
			expect(arr.indexOf(raw)).toEqual(2);
			
            const beasts: string[] = ['ant', 'bison', 'camel', 'duck', 'bison'];
            expect(beasts.indexOf('bison')).toEqual(1);
            expect(beasts.indexOf('bison', 2)).toEqual(4);
            expect(beasts.indexOf('giraffe')).toEqual(-1);
            
            const indices: number[] = [];
            const array: string[] = ['a', 'b', 'a', 'c', 'a', 'd'];
            const element = 'a';
            let idx = array.indexOf(element);
            // swift里，基础类型暂不支持!==,===对比
            while (idx != -1) {
              indices.push(idx);
              idx = array.indexOf(element, idx + 1);
            }
            expect(indices).toEqual([0, 2, 4]);
        })
        test("join", () => {
            const elements: string[] = ['Fire', 'Air', 'Water'];
            expect(elements.join()).toEqual("Fire,Air,Water");
            expect(elements.join('')).toEqual("FireAirWater");
            expect(elements.join('-')).toEqual("Fire-Air-Water");
        })
        test("lastIndexOf", () => {
			
			let raw = {}
			let arr = new Array()
			arr.push({});
			arr.push({});
			arr.push(raw);
			expect(arr.lastIndexOf(raw)).toEqual(2);
			
			
            const animals: string[] = ['Dodo', 'Tiger', 'Penguin', 'Dodo'];
            expect(animals.lastIndexOf('Dodo')).toEqual(3);
            expect(animals.lastIndexOf('Tiger')).toEqual(1);
            const array: number[] = [2, 5, 9, 2];
            let index = array.lastIndexOf(2);
            expect(index).toEqual(3);
            index = array.lastIndexOf(7);
            expect(index).toEqual(-1);
            index = array.lastIndexOf(2, 3);
            expect(index).toEqual(3);
            index = array.lastIndexOf(2, 2);
            expect(index).toEqual(0);
			
			
			
			
        })
        test("map", () => {
            const array1: number[] = [1, 4, 9, 16];
            const map1 = array1.map((x:number):number => x * 2);
            expect(map1).toEqual([2, 8, 18, 32]);
            
            const numbers: number[] = [1, 4, 9];
            const roots = numbers.map((num:number):number => num + 1);
            expect(numbers).toEqual([1, 4, 9]);
            expect(roots).toEqual([2, 5, 10]);
            
            const array2: number[] = [1, 2, 3];
            array2.map((element:number, index:number, array:number[]) => {
                expect(array[index]).toEqual(element);
            })
        })
        test("pop", () => {
            const plants: string[] = ['broccoli', 'cauliflower', 'cabbage', 'kale', 'tomato'];
            expect(plants.pop()).toEqual("tomato");
            expect(plants).toEqual(["broccoli", "cauliflower", "cabbage", "kale"]);
            plants.pop();
            expect(plants).toEqual(["broccoli", "cauliflower", "cabbage"]);
        })
        test("push", () => {
            const animals: string[] = ['pigs', 'goats', 'sheep'];
            const count = animals.push('cows');
            expect(count).toEqual(4);
            expect(animals).toEqual(['pigs', 'goats', 'sheep', 'cows']);
            animals.push('chickens', 'cats', 'dogs');
            expect(animals).toEqual(["pigs", "goats", "sheep", "cows", "chickens", "cats", "dogs"]);
        })
        test("reduce", () => {
            const array1: number[] = [1, 2, 3, 4];
            const initialValue:number = 0;
            const sumWithInitial = array1.reduce(
              (previousValue:number, currentValue:number):number => previousValue + currentValue,
              initialValue
            );
            expect(sumWithInitial).toEqual(10);
        })
        test("shift", () => {
            const array1: number[] =  [1, 2, 3];
            const firstElement = array1.shift();
            expect(firstElement).toEqual(1);
            expect(array1).toEqual([2, 3]);
        })
        test("slice", () => {
            const animals: string[] = ['ant', 'bison', 'camel', 'duck', 'elephant'];
            expect(animals.slice(2)).toEqual(["camel", "duck", "elephant"]);
            expect(animals.slice(2, 4)).toEqual(["camel", "duck"]);
            expect(animals.slice(1, 5)).toEqual(["bison", "camel", "duck", "elephant"]);
            expect(animals.slice(-2)).toEqual(["duck", "elephant"]);
            expect(animals.slice(2, -1)).toEqual(["camel", "duck"]);
            expect(animals.slice()).toEqual(["ant", "bison", "camel", "duck", "elephant"]);
        })
        test("some", () => {
            const array: number[] = [1, 2, 3, 4, 5];
            const even = (element:number):boolean=> element % 2 == 0;
            expect(array.some(even)).toEqual(true);
            const isBiggerThan10 = (element:number):boolean=> element > 10;
            expect([2, 5, 8, 1, 4].some(isBiggerThan10)).toEqual(false);
            expect([12, 5, 8, 1, 4].some(isBiggerThan10)).toEqual(true);
        })
        test("splice", () => {
            const months: string[] = ['Jan', 'March', 'April', 'June'];
            months.splice(1, 0, 'Feb');
            expect(months).toEqual(["Jan", "Feb", "March", "April", "June"]);
            months.splice(4, 1, 'May');
            expect(months).toEqual(["Jan", "Feb", "March", "April", "May"]);
        })
        test('sort', () => {
            const months = ['March', 'Jan', 'Feb', 'Dec'];
            months.sort();
            expect(months).toEqual(["Dec", "Feb", "Jan", "March"]);
            
            const array1 = [1, 30, 4, 21, 100000];
            array1.sort();
            expect(array1).toEqual([1, 100000, 21, 30, 4]);
            
            const array2 = [5, 1, 4, 2, 3];
            array2.sort((a, b):number => a - b);
            expect(array2).toEqual([1, 2, 3, 4, 5]);
            
            // const array3 = [5, "banana", 4, "apple", 3, "cherry", 2, "date", 1];
            // array3.sort();
            // expect(array3).toEqual([1, 2, 3, 4, 5, "apple", "banana", "cherry", "date"]);
            
            const array4 = [
              { name: "John", age: 24 },
              { name: "Sarah", age: 19 },
              { name: "Bob", age: 27 },
              { name: "Alice", age: 21 }
            ];
            // 先强转类型，解决编译报错
            array4.sort((a, b):number => (a['age'] as number) - (b['age'] as number));
            expect(array4).toEqual([{ name: "Sarah", age: 19 }, { name: "Alice", age: 21 }, { name: "John", age: 24 }, { name: "Bob", age: 27 }]);
        })
        test("unshift", () => {
            const array1: number[] = [1, 2, 3];
            expect(array1.unshift(4, 5)).toEqual(5);
            expect(array1).toEqual([4, 5, 1, 2, 3]);
        })
		test("toString", () => {
		    const array1: number[] = [1, 2, 3];
		    expect(array1.toString()).toEqual("1,2,3");
			const array2 = new Array<string>()
			array2.push("a")
			array2.push("b")
			array2.push("c")
			expect(array2.toString()).toEqual("a,b,c");
		})
        test('reverse', () => {
            // const array1: string[] = ['one', 'two', 'three'];
            // const reversed1: string[] = array1.reverse();
            // expect(reversed1).toEqual(["three", "two", "one"]);
            // expect(array1).toEqual(["three", "·two", "one"]);
            
            // const array2 = [1, 2, 3, 4, 5];
            // const reversed2 = array2.reverse();
            // expect(reversed2).toEqual([5, 4, 3, 2, 1]);
            // expect(array2).toEqual([5, 4, 3, 2, 1]);
        })
        test("reduceRight", () => {
            const array1: number[][] = [[0, 1], [2, 3], [4, 5]];
            const result1 = array1.reduceRight((accumulator: number[], currentValue: number[]): number[] => accumulator.concat(currentValue));
            expect(result1).toEqual([4, 5, 2, 3, 0, 1]);
            
            const array2: number[] = [1, 2, 3, 4];
            const result2 = array2.reduceRight((acc: number, cur: number, index: number, array: number[]): number => {
                expect(array[index]).toEqual(cur);
                return acc + cur;
            });
            expect(result2).toEqual(10);
            
            const result3 = array2.reduceRight((acc: number, cur: number): number => acc + cur, 5);
            expect(result3).toEqual(15);
        })
        test("flatMap", () => {
            const arr: number[] = [1, 2, 3];
            const result = arr.flatMap((x: number):number[] => [x, x * 2]);
            expect(result).toEqual([1, 2, 2, 4, 3, 6]);
            
            const arr1: number[] = [1, 2, 3, 4];
            const result1 = arr1.flatMap((num: number, index: number, array: number[]): number[] => {
                expect(array[index]).toEqual(num);
                if (num % 2 == 0) {
                    return [num * 2];
                }
                return [];
            });
            expect(result1).toEqual([4, 8]);
        })
        test("entries", () => {
            // const array1 = ['a', 'b', 'c'];
            // const iterator1 = array1.entries();
            // expect(iterator1.next().value).toEqual([0, "a"]);
            // expect(iterator1.next().value).toEqual([1, "b"]);
            // expect(iterator1.next().value).toEqual([2, "c"]);
            // expect(iterator1.next().done).toEqual(true);
            
            // const array2: any[] = [1, 2, 'hello', true, { name: 'john', age: 30 }, [4, 5]];
            // let count = 0;
            // for (const [index, element] of array2.entries()) {
            //     count++;
            //     expect(element).toEqual(array2[index]);
            // }
            // expect(count).toEqual(array2.length);
        })
        test("keys", () => {
            // const array1 = ['a', 'b', 'c'];
            // const iterator1 = array1.keys();
            // expect(iterator1.next().value).toEqual(0);
            // expect(iterator1.next().value).toEqual(1);
            // expect(iterator1.next().value).toEqual(2);
            // expect(iterator1.next().done).toEqual(true);
        })
		
    })
}