import * as path from 'path';
import Mocha from 'mocha';
import { glob } from 'glob';

export async function run(): Promise<void> {
  // Create the mocha test
  const mocha = new Mocha({
    ui: 'tdd',
    color: true
  });

  const testsRoot = path.resolve(__dirname, '..');
  const files = await glob('**/**.test.js', { cwd: testsRoot });

  // Add files to the test suite
  files.forEach(f => mocha.addFile(path.resolve(testsRoot, f)));

  try {
    return new Promise<void>((c, e) => {
      // Run the mocha test
      mocha.run(failures => {
        if (failures > 0) {
          e(new Error(`${failures} tests failed.`));
        } else {
          c();
        }
      });
    });
  } catch (err) {
    console.error(err);
  }
}