svg-pathdata/src/tests/scale.test.ts

Manipulate SVG path data (path[d] attribute content) simply and efficiently.

import { describe, test, expect } from '@jest/globals';
import { SVGPathData } from '../index.js';
import { assertThrows } from './testUtils.js';

describe('Positive scale', () => {
  test('should fail with no args', () => {
    assertThrows(
      () => {
        new SVGPathData('m20,30l10,10z')
          .scale(undefined as unknown as number)
          .encode();
      },
      Error,
      'assertNumbers arguments[0] is not a number. undefined == typeof undefined',
    );
  });

  test('should work with relative path', () => {
    expect(
      new SVGPathData('m20 30c0 0 10 20 15 30z').scale(10, 10).encode(),
    ).toEqual('m200 300c0 0 100 200 150 300z');
  });

  test('should work with absolute path', () => {
    expect(
      new SVGPathData('M20 30C0 0 10 20 15 30z').scale(10, 10).encode(),
    ).toEqual('M200 300C0 0 100 200 150 300z');
  });
});