pdfkit/tests/unit/table.spec.js

import PDFDocument from '../../lib/document';
import PDFTable from '../../lib/table';
import { deepMerge } from '../../lib/table/utils';

describe('table', () => {
  test('created', () => {
    const document = new PDFDocument();
    expect(document.table()).toBeInstanceOf(PDFTable);
    expect(document.table({ data: [] })).toBe(document);
  });
  test('row', () => {
    const document = new PDFDocument();
    const table = document.table();
    table.row(['A', 'B', 'C']);
    expect(table._columnWidths.length).toBe(3);
  });
});

describe('utils', () => {
  describe('deepMerge', () => {
    test.each([
      [{ a: 'hello' }, { b: 'world' }, { a: 'hello', b: 'world' }],
      [{ a: 'hello' }, { a: 'world' }, { a: 'world' }],
      [{}, { a: 'hello' }, { a: 'hello' }],
      [{ a: 'hello' }, undefined, { a: 'hello' }],
      [undefined, null, undefined],
      [1, 2, 1],
      [1, {}, 1],
      [{ a: 'hello' }, { a: {} }, { a: 'hello' }],
      [{ a: { b: 'hello' } }, { a: { b: 'world' } }, { a: { b: 'world' } }],
    ])('%o -> %o', function () {
      const opts = Array.from(arguments);
      const expected = opts.splice(-1, 1)[0];
      expect(deepMerge(...opts)).toEqual(expected);
    });
  });
});