Implemented Flask test client driver

.travis.yml

@@ -8,6 +8,7 @@ python:
   - "3.3"
 env:
   - DRIVER=tests/test_djangoclient.py
+  - DRIVER=tests/test_flaskclient.py
   - DRIVER=tests/test_webdriver_remote.py
   - DRIVER=tests/test_webdriver_firefox.py
   - DRIVER=tests/test_zopetestbrowser.py

docs/drivers/flask.rst

@@ -0,0 +1,45 @@
+.. Copyright 2014 splinter authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.
+
+.. meta::
+    :description: How to use splinter with Flask.
+    :keywords: splinter, python, tutorial, how to install, installation, Flask
+
+++++++++++++
+Flask client
+++++++++++++
+
+.. module:: splinter.driver.flaskclient
+
+To use the ``flask`` driver, you need to install `Flask <https://pypi.python.org/pypi/Flask>`_, 
+`lxml <https://pypi.python.org/pypi/lxml>`_ and `cssselect <http://pypi.python.org/pypi/cssselect>`_. 
+You can install all of them in one step by running:
+
+.. highlight:: bash
+
+::
+
+    $ pip install splinter[flask]
+
+Using Flask client
+-------------------
+
+To use the ``flask`` driver, you'll need to pass the string ``flask`` and an app instances via the
+``app`` keyword argument when you create the ``Browser`` instance:
+
+.. highlight:: python
+
+::
+
+    from splinter import Browser
+    browser = Browser('flask', app=app)
+
+**Note:** if you don't provide any driver to ``Browser`` function, ``firefox`` will be used.
+
+API docs
+--------
+
+.. autoclass:: FlaskClient
+   :members:
+   :inherited-members:

setup.py

@@ -25,6 +25,7 @@
     install_requires=['selenium>=2.39.0'],
     extras_require={'zope.testbrowser': ['zope.testbrowser>=4.0.4',
                                          'lxml>=2.3.6', 'cssselect'],
-                    'django': ['Django==1.6.1', 'lxml>=2.3.6', 'cssselect']},
+                    'django': ['Django==1.6.1', 'lxml>=2.3.6', 'cssselect'],
+                    'flask': ['Flask>=0.10', 'lxml>=2.3.6', 'cssselect']},
     tests_require=['coverage', 'flask'],
 )

splinter/browser.py

@@ -34,6 +34,13 @@
 except ImportError:
     pass
 
+try:
+    import flask  # noqa
+    from splinter.driver.flaskclient import FlaskClient
+    _DRIVERS['flask'] = FlaskClient
+except ImportError:
+    pass
+
 
 def Browser(driver_name='firefox', *args, **kwargs):
     """