enhancedmath/lib/__tests__/transpose.test.js

This package contains some enhanced mathematical operations

import { describe, test, expect } from 'vitest';
import transpose from '../Matrix/transpose';
describe('transpose', () => {
    test('should return the same element for a 1x1 matrix', () => {
        const matrix = [[1]];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([[1]]);
    });
    test('should return the same element for a 1x2 matrix', () => {
        const matrix = [[1, 2]];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([[1], [2]]);
    });
    test('should return the same element for a 2x1 matrix', () => {
        const matrix = [[1], [2]];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([[1, 2]]);
    });
    test('should return the transpose for a 2x2 matrix', () => {
        const matrix = [
            [1, 2],
            [3, 4],
        ];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([
            [1, 3],
            [2, 4],
        ]);
    });
    test('should return the transpose for a 2x3 matrix', () => {
        const matrix = [
            [1, 2, 3],
            [4, 5, 6],
        ];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([
            [1, 4],
            [2, 5],
            [3, 6],
        ]);
    });
    test('should return the transpose for a 2x3 matrix', () => {
        const matrix = [
            [1, 4],
            [2, 5],
            [3, 6],
        ];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([
            [1, 2, 3],
            [4, 5, 6],
        ]);
    });
    test('transpose of an array with an empty row should return the transposed array with null values for that row', () => {
        const matrix = [[], [1, 2, 3]];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([
            [null, 1],
            [null, 2],
            [null, 3],
        ]);
    });
    test('should fill the empty spots with null when transposing an array', () => {
        const matrix = [
            [, , ,],
            [7, 8, 9],
        ];
        const tMap = transpose(matrix);
        expect(tMap).toEqual([
            [null, 7],
            [null, 8],
            [null, 9],
        ]);
    });
});