simple-icons/tests/icons.test.js

const fs = require('fs');
const path = require('path');
const { icons } = require('../_data/simple-icons.json');
const { getIconSlug } = require('../scripts/utils.js');

const iconsDir = path.resolve(__dirname, '..', 'icons');

icons.forEach((icon) => {
  const filename = getIconSlug(icon);
  const subject = require(`../icons/${filename}.js`);
  const svgPath = path.resolve(iconsDir, `${filename}.svg`);

  test(`${icon.title} has the correct "title"`, () => {
    expect(typeof subject.title).toBe('string');
    expect(subject.title).toEqual(icon.title);
  });

  test(`${icon.title} has the correct "slug"`, () => {
    expect(typeof subject.slug).toBe('string');
    expect(subject.slug).toEqual(getIconSlug(icon));
  });

  test(`${icon.title} has the correct "hex" value`, () => {
    expect(typeof subject.hex).toBe('string');
    expect(subject.hex).toEqual(icon.hex);
  });

  test(`${icon.title} has the correct "source"`, () => {
    expect(typeof subject.source).toBe('string');
    expect(subject.source).toEqual(icon.source);
  });

  test(`${icon.title} has a valid "svg" value`, () => {
    expect(typeof subject.svg).toBe('string');
    const svgFileContents = fs
      .readFileSync(svgPath, 'utf8')
      .replace(/\r?\n/, '');
    expect(subject.svg.substring(subject.svg.indexOf('<title>'))).toEqual(
      svgFileContents.substring(svgFileContents.indexOf('<title>')),
    );
  });

  test(`${icon.title} has a valid "path" value`, () => {
    expect(typeof subject.path).toBe('string');
    expect(subject.path).toMatch(/^[MmZzLlHhVvCcSsQqTtAaEe0-9-,.\s]+$/g);
  });

  test(`${icon.title} has ${
    icon.guidelines ? 'the correct' : 'no'
  } "guidelines"`, () => {
    if (icon.guidelines) {
      expect(typeof subject.guidelines).toBe('string');
      expect(subject.guidelines).toEqual(icon.guidelines);
    } else {
      expect(subject.guidelines).toBeUndefined();
    }
  });

  test(`${icon.title} has ${
    icon.license ? 'the correct' : 'no'
  } "license"`, () => {
    if (icon.license) {
      expect(typeof subject.license).toBe('object');
      expect(subject.license).toHaveProperty('type', icon.license.type);
      if (icon.license.type === 'custom') {
        expect(subject.license).toHaveProperty('url', icon.license.url);
      } else {
        expect(typeof subject.license.url).toBe('string');
        expect(subject.license.url).toMatch(/^https?:\/\/[^\s]+$/);
      }
    } else {
      expect(subject.license).toBeUndefined();
    }
  });
});