title: Django test TemplateDoesNotExist
body: <p>i hava a django pratice like this </p>
  
  <pre><code>│  manage.py
  ├─accounts
  │  │  models.py
  │  │  tests.py
  │  │  urls.py
  │  │  views.py
  │  │  __init__.py
  │  │
  │  └─templates
  │      └─accounts
  │              detail.html
  │              index.html
  │              login.html
  │              register.html
  │
  ├─my_site
  │      settings.py
  │      urls.py
  │      wsgi.py
  │      __init__.py
  │
  └─templates
          base.html
  </code></pre>
  
  <p>when i write the test which is also inside django guide, when i test the assertRedirects, the "to" login.html will raise error described below bacause of this: </p>
  
  <pre><code>{% extends "base.html" %}
  </code></pre>
  
  <p>the error is this:</p>
  
  <pre><code>TemplateDoesNotExist: base.html
  </code></pre>
  
  <p>in my settings.py, TEMPLATE_DIRS looks like this</p>
  
  <pre><code>TEMPLATE_DIRS = (
      'templates'
  )
  </code></pre>
  
  <p>so is there anyone tell my how to fix this?</p>