Utility
_join
说明
将数组中的所有元素转换为由
separator 分隔的字符串源码
用法
_join.test.ts
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import { _join } from "../../utility/array/_join";
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describe('Method _join test:', () => {
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test('_join() should return the empty string when receive an empty array', () => {
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const received = {
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arr: [],
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separator: '',
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};
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const expected = '';
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const result = _join(received.arr, received.separator);
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expect(result).toBe(expected);
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});
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test('_join() should return the composed string when receive an array maked by number', () => {
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const received = {
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arr: [1, 2, 3, 4, 5],
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separator: '',
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};
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const expected = '12345';
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const result = _join(received.arr, received.separator);
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expect(result).toBe(expected);
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});
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test('_join() can config your own separator', () => {
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const received = {
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arr: ['a', 'b', 'c', 'd', 'e'],
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separator: '-',
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};
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const expected = 'a-b-c-d-e';
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const result = _join(received.arr, received.separator);
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expect(result).toBe(expected);
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});
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});
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