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BDD4Django

BDD4DJango unifies 4 elements:

  • Django
  • Morelia Viridis (with added features and better Django integration)
  • Splinter
  • A TestCase class with helper methods to run Django tests.

Morelia viridis** is fully documented on the "C2 Wiki":http://c2.com/cgi/wiki?MoreliaViridis

Splinter is fully documented here http://splinter.cobrateam.info/docs/

BDD4Django comes with a TestCase class that inherits Django LiveServerTestCase, this allow the tests to be executed in a browser running on the test database.

Install

Install it with pip:

pip install bdd4django

Requirements

  • Splinter
  • Django >= 1.4 or Django 1.3 with django-live-server

Now there's a port of django live server for Django 1.3, so you can use BDD4Django with it: https://github.com/adamcharnock/django-live-server

Usage Instructions

Create a testcase class that inherits from BDDTestCase or BDDCoreTestCase:

Use BDDCoreTestCase as the base class if you want an off-browser test

Use BDDCoreTestCase as the base class if you want an in-browser(using Splinter) test

Both inherit from BDDBaseTestCase

Settings

You can test your project using Firefox or Chrome. Firefox is the default, but you can set Chrome as the browser to use. set the settings variable BDD_BROWSER in your project settings:

BDD_BROWSER = 'chrome'

Tutorials

I did some tutorials to help people start using BDD4Django. You can check these tutorials in the follow links:

English: http://codevening.wordpress.com/2012/10/18/bdd4django-tutorial/

http://codevening.wordpress.com/2012/10/31/tutorial-bdd4django-part-2/

Portuguese: http://codevening.wordpress.com/2012/10/20/tutorial-de-bdd4django-portugues/

http://codevening.wordpress.com/2012/11/05/tutorial-de-bdd4django-parte-2-portugues/

The package comes with a demo app that is used in the part 2 of these tutorials, enjoy it.

Simple Examples

from bdd4django.helpers import BDDTestCase

class MyTests(BDDTestCase):

    def test_evaluate_file(self):
        self.parse_feature_file( 'accounts' )

or

from bdd4django.helpers import BDDCoreTestCase

class MyTests(BDDCoreTestCase):

    def test_evaluate_file(self):
        self.parse_feature_file( 'accounts' )

Just write a test method that calls self.parse_feature_file passing the app name as argument (The feature file must have the name "app_name.feature")

Methods from BDDBaseTestCase

def extra_setup(self):

Add extra setup, this is an abstract method that you should override to run.

def parse_feature_file(self, app=None, file_path=None, scenarios=None):

Parse the feature file with the name app.feature inside your app or the file_path you want to evaluate specified. You can specificy which scenarios to run with the argument scenarios. scenarios is a tuple of scenario names or None if you want to run all the scenarios.

def prepare_database(self):

Prepare the database, override this method to prepare your own objects in the database.

def step_I_load_value_in(self, value, key):
    r'I load value "([^"]+)" in "([^"]+)"'

Load the value value in the key variable key
You can reference a module in the value using the python sintax.
Ex: myapp.models.Model.objects.get(id=1)

def step_I_see_an_object_with_values(self, object, values):
    r'I see an object "([^"]+)" with values "([^"]+)"'

Verifies the existence of an object in the database of type object, with values values.
You can reference a module in the object using the python sintax.
Ex: myapp.models.Model

The values parameter must be a dictionary, so in your .feature file you need to write something like this:
I see an object "django.contrib.auth.User" with values "{'username':'test'}"

    def step_I_wait_seconds(self, seconds):
        r'I wait ([0-9\.]+) second[s]?'

Wait seconds seconds before continue to the next step. It's useful if you need to wait some event or an animation.

    def step_I_wait_and_see(self):
        r'I wait and see'

It adds a breakpoint in the test flow, so you can inspect the class variables and analyse the test in a pause mode.

Methods from BDDTestCase

def step_i_visit_url(self, url):
    r'I visit url "([^"]+)"'

Visit the url

def step_I_click_the_link(self, name):
    r'I click the link "([^"]+)"'

Click the link specified by name. Tries to find following the priority list:

  • by text
  • by partial text
  • by href
  • by partial href
def step_i_click_the_button(self, name):
    r'I click the button "([^"]+)"'

Click the button specified by name. Tries to find following the priority list:

  • by id
  • by name
  • by text
  • by css
def step_I_login_as_with_password(self, username, password):
    r'I login as "([^"]+)" with password "([^"]+)"'

Login using the credentials username and password. Tries to find fields with names "username" and "password" and a submit input.

def step_i_check_fields(self, fields):
    r'I check fields "([^"]+)"'

Check/Uncheck the checkboxes separated by comma ','

def step_i_fill_in_field_with_value(self, field, value):
    r'I fill in field "([^"]+)" with value "([^"]+)"'

Fill the field named field with value. This method allows a python expression as value (just put "eval:" in the value field) Ex: I fill in field "test" with value "self.today(add_days=1)"

Tries to fill following the priority:

  • Simple text field
  • Multiple selection
  • Select
def step_i_fill_in_fields_with_values(self, fields, values):
    r'I fill in fields "([^"]+)" with values "([^"]+)"'

Fill a list of fields separated by comma with a list of values separated by comma, using the same criteria from step_i_fill_in_field_with_value.

def step_i_see_the_text(self, text):
    r'I see the text "([^"]+)"'

Assert the presence of text in the HTML output.

def step_i_see_the_element(self, id):
    r'I see the element "([^"]+)"'

Assert the presence of element in the html output.

def step_im_redirected_to_url(self, url):
    r'I\'m redirected to url "([^"]+)"'

Assert the redirection url

def step_I_see_the_element_with_class(self, name, class_name):
    r'I see the element "([^"]+)" with class "([^"]+)"'

Assert the existence of an element with name that has the class class_name

def step_I_see_the_element_parent_with_class(self, name, class_name):
    r'I see the element "([^"]+)" parent with class "([^"]+)"'

Assert the existence of an element with name that one of its parents has the class class_name

def step_I_see_the_field_with_value(self, field, value):
    r'I see the field "([^"]+)" with value "([^"]+)"'

Assert the existence of a field with value value

def step_I_see_the_fields_with_values(self, fields, values):
    r'I see the fields "([^"]+)" with values "([^"]+)"'

Assert the existence of a list of fields separated by comma, each one of them with its correspondent value in values

Methods from BDDCoreTestCase

def step_I_call_view(self, view):
    r'I call view "([^"]+)"'

Call the view with get method

def step_I_call_view_as_user_with_password(self, view, username, password):
    r'I call view "([^"]+)" as user "([^"]+)" with password "([^"]+)"'

Call the view with get method and the user username logged with password

def step_I_get_the_template_rendered(self, template_name):
    r'I get the template "([^"]+)" rendered'

Assert the righ template was rendered

def step_I_call_view_with_data(self, view, type, data):
    r'I call view "([^"]+)" with ([^"]+) data "([^"]+)"'

Call view view with type using the method type(post or get) and with data data Data is a dictionary passed between quote. Ex: "{'data1':value1,'data2':'value2'}

def step_I_call_view_with_data_as_user_with_password(self, view, type, data, username, password):
    r'I call view "([^"]+)" with ([^"]+) data "([^"]+)" as user "([^"]+)" with password "([^"]+)"'

Call view view with type using the method type(post or get) and with data data and the user username logged with password data is a dictionary passed between quote. Ex: "{'data1':value1,'data2':'value2'}

def step_I_call_view_with_params(self, view, params):
    r'I call view "([^"]+)" with params "([^"]+)"'

Call view view with parameters params params is a dictionary passed between quote. Ex: "{'data1':value1,'data2':'value2'}

def step_I_call_method_with_params(self, method, params):
    r'I call method "([^"]+)" with params "([^"]+)"'

Call method method with parameters params params is a dictionary passed between quote. Ex: "{'data1':value1,'data2':'value2'}

def step_I_get_the_return(self, return_values):
    r'I get the return "([^"]+)"'

Check the return of a method call, the return_values parameter can be a single value or a colon separated list of values. You can reference a module in the return_values using the python sintax. Ex: myapp.utils.myobject

def step_I_see_an_object_with_values(self, object, values):
    r'I see an object "([^"]+)" with values "([^"]+)"'

Assert the existence of the object in the database with the values values values is a dictionary passed between quote. Ex: "{'data1':value1,'data2':'value2'}

def step_I_get_the_context_variables_with_values(self, variables, values):
    r'I get the context variables "([^"]+)" with values "([^"]+)"'

Assert the existence of the context variables with values variables and values are passed separated by "|"(pipe) You can use a python statement as both of them.