'use strict';

const { expect } = require('chai');
const isPng = require('is-png');
const isSvg = require('is-svg');
const { spawn } = require('child-process-promise');

// https://github.com/badges/shields/pull/1419#discussion_r159957055
require('./register-chai-plugins.spec');

function runCli (args) {
  return spawn('node', ['lib/badge-cli.js', ...args], { capture: ['stdout'] })
}

describe('The CLI', function () {
  it('should provide a help message', async function () {
    const { stdout } = await runCli([]);
    expect(stdout).to.startWith('Usage');
  });

  it('should produce default badges', async function () {
    const { stdout } = await runCli(['cactus', 'grown']);
    expect(stdout)
      .to.satisfy(isSvg)
      .and.to.include('cactus')
      .and.to.include('grown');
  });

  it('should produce colorschemed badges', async function () {
    const { stdout } = await runCli(['cactus', 'grown', ':green']);
    expect(stdout).to.satisfy(isSvg);
  });

  it('should produce right-color badges', async function () {
    const { stdout } = await runCli(['cactus', 'grown', '#abcdef']);
    expect(stdout)
      .to.satisfy(isSvg)
      .and.to.include('#abcdef');
  });

  it('should produce PNG badges', async function () {
    const child = runCli(['cactus', 'grown', '.png']);

    // The buffering done by `child-process-promise` doesn't seem correctly to
    // handle binary data.
    let chunk;
    child.childProcess.stdout.once('data', data => { chunk = data; });

    await child;

    expect(chunk).to.satisfy(isPng);
  });
});