39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
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import { removeDuplicate } from './removeDuplicate';
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describe('removeDuplicate', () => {
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test('should remove duplicate elements of an array', () => {
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const result = removeDuplicate([1, 1, 2, 3, 3, 4, 5]);
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const expected = [1, 2, 3, 4, 5];
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expect(result).toStrictEqual(expected);
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expect(result.length).toBe(5);
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});
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test('should return an empty array', () => {
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const result = removeDuplicate([]);
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const expected = [];
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expect(result).toStrictEqual(expected);
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expect(result.length).toBe(0);
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});
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test('should return an array with the same element', () => {
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const result = removeDuplicate([1]);
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const expected = [1];
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expect(result).toStrictEqual(expected);
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expect(result.length).toBe(1);
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});
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test('should return an array with only one element', () => {
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const result = removeDuplicate([1, 1, 1, 1]);
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const expected = [1];
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expect(result).toStrictEqual(expected);
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expect(result.length).toBe(1);
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});
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test('should return an array with the unique elements in the same order as the original array', () => {
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const result = removeDuplicate([1, 2, 3, 4, 5, 1, 2, 3, 4, 5]);
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const expected = [1, 2, 3, 4, 5];
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expect(result).toStrictEqual(expected);
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expect(result.length).toBe(5);
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});
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});
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