title: mocha not running all tests in test dir
body: <p>This is my folder structure</p>
  
  <pre><code>src/
     a.js
     b.js
     test/
       a.spec.js
       b.spec.js
  </code></pre>
  
  <p>and I've tried running</p>
  
  <ol>
  <li><code>~/.../src $ mocha</code></li>
  <li><code>~/.../src $ mocha test</code></li>
  <li><code>~/.../src $ mocha test/</code></li>
  <li><code>~/.../src $ mocha ./test/</code></li>
  <li><code>~/.../src $ mocha ./test/*.js</code></li>
  </ol>
  
  <p>but non worked... all I get is just one test file running and the rest are ignored.</p>
  
  <p>The <a href="http://mochajs.org/#the-test-directory" rel="noreferrer">docs</a> say that (1) should do the job but well it doesn't.</p>