Add some tests using tox

.gitignore

 *.pyc
+*.egg-info
 
 bootstrap3
 cas/
 db.sqlite3
 manage.py
+
+.tox

.travis.yml

+language: python
+python:
+  - "2.7"
+env:
+  global:
+    - PIP_DOWNLOAD_CACHE=$HOME/.pip_cache
+  matrix:
+    - TOX_ENV=py27-django17
+    - TOX_ENV=py27-django18
+    - TOX_ENV=flake8
+cache:
+  directories:
+    - $HOME/.pip-cache/
+install:
+  - "travis_retry pip install setuptools --upgrade"
+  - "pip install tox"
+script:
+  - tox -e $TOX_ENV
+after_script:
+  - cat .tox/$TOX_ENV/log/*.log
+

cas_server/forms.py

@@ -27,26 +27,14 @@ class UserCredential(forms.Form):
     method = forms.CharField(widget=forms.HiddenInput(), required=False)
     warn = forms.BooleanField(label=_('warn'), required=False)
 
-    def __init__(self, request, *args, **kwargs):
-        self.request = request
+    def __init__(self, *args, **kwargs):
         super(UserCredential, self).__init__(*args, **kwargs)
 
     def clean(self):
         cleaned_data = super(UserCredential, self).clean()
         auth = utils.import_attr(settings.CAS_AUTH_CLASS)(cleaned_data.get("username"))
         if auth.test_password(cleaned_data.get("password")):
-            try:
-                user = models.User.objects.get(
-                    username=auth.username,
-                    session_key=self.request.session.session_key
-                )
-                user.save()
-            except models.User.DoesNotExist:
-                user = models.User.objects.create(
-                    username=auth.username,
-                    session_key=self.request.session.session_key
-                )
-                user.save()
+            cleaned_data["username"] = auth.username
         else:
             raise forms.ValidationError(_(u"Bad user"))
 

cas_server/views.py

@@ -89,11 +89,14 @@ class LogoutView(View, LogoutMixin):
     request = None
     service = None
 
-    def get(self, request, *args, **kwargs):
-        """methode called on GET request on this view"""
+    def init_get(self, request):
         self.request = request
         self.service = request.GET.get('service')
         self.url = request.GET.get('url')
+
+    def get(self, request, *args, **kwargs):
+        """methode called on GET request on this view"""
+        self.init_get(request)
         self.logout()
         # if service is set, redirect to service after logout
         if self.service:
@@ -105,6 +108,7 @@ class LogoutView(View, LogoutMixin):
         # else redirect to login page
         else:
             if settings.CAS_REDIRECT_TO_LOGIN_AFTER_LOGOUT:
+
                 messages.add_message(request, messages.SUCCESS, _(u'Successfully logout'))
                 return redirect("cas_server:login")
             else:
@@ -129,67 +133,110 @@ class LoginView(View, LogoutMixin):
     renewed = False
     warned = False
 
-    def post(self, request, *args, **kwargs):
-        """methode called on POST request on this view"""
+    INVALID_LOGIN_TICKET = 1
+    USER_LOGIN_OK = 2
+    USER_LOGIN_FAILURE = 3
+    USER_ALREADY_LOGGED = 4
+    USER_AUTHENTICATED = 5
+    USER_NOT_AUTHENTICATED = 6
+
+    def init_post(self, request):
         self.request = request
         self.service = request.POST.get('service')
         self.renew = True if request.POST.get('renew') else False
         self.gateway = request.POST.get('gateway')
         self.method = request.POST.get('method')
 
+    def check_lt(self):
         # save LT for later check
-        lt_valid = request.session.get('lt')
-        lt_send = request.POST.get('lt')
+        lt_valid = self.request.session.get('lt')
+        lt_send = self.request.POST.get('lt')
         # generate a new LT (by posting the LT has been consumed)
-        request.session['lt'] = utils.gen_lt()
+        self.request.session['lt'] = utils.gen_lt()
 
         # check if send LT is valid
         if lt_valid is None or lt_valid != lt_send:
+            return False
+        else:
+            return True
+
+    def post(self, request, *args, **kwargs):
+        """methode called on POST request on this view"""
+        self.init_post(request)
+        ret = self.process_post()
+        if ret == self.INVALID_LOGIN_TICKET:
             messages.add_message(
                 self.request,
                 messages.ERROR,
                 _(u"Invalid login ticket")
             )
-            values = request.POST.copy()
-            # if not set a new LT and fail
-            values['lt'] = request.session['lt']
-            self.init_form(values)
-
-        elif not request.session.get("authenticated") or self.renew:
-            self.init_form(request.POST)
-            if self.form.is_valid():
+        elif ret == self.USER_LOGIN_OK:
+            try:
                 self.user = models.User.objects.get(
-                    username=self.form.cleaned_data['username'],
+                    username=self.request.session['username'],
                     session_key=self.request.session.session_key
                 )
-                request.session.set_expiry(0)
-                request.session["username"] = self.form.cleaned_data['username']
-                request.session["warn"] = True if self.form.cleaned_data.get("warn") else False
-                request.session["authenticated"] = True
+                self.user.save()
+            except models.User.DoesNotExist:
+                self.user = models.User.objects.create(
+                    username=self.request.session['username'],
+                    session_key=self.request.session.session_key
+                )
+                self.user.save()
+        elif ret == self.USER_LOGIN_FAILURE:  # bad user login
+            self.logout()
+        elif ret == self.USER_ALREADY_LOGGED:
+            pass
+        else:
+            raise EnvironmentError("invalid output for LoginView.process_post")
+        return self.common()
+
+    def process_post(self, pytest=False):
+        if not self.check_lt():
+            values = self.request.POST.copy()
+            # if not set a new LT and fail
+            values['lt'] = self.request.session['lt']
+            self.init_form(values)
+            return self.INVALID_LOGIN_TICKET
+        elif not self.request.session.get("authenticated") or self.renew:
+            self.init_form(self.request.POST)
+            if self.form.is_valid():
+                self.request.session.set_expiry(0)
+                self.request.session["username"] = self.form.cleaned_data['username']
+                self.request.session["warn"] = True if self.form.cleaned_data.get("warn") else False
+                self.request.session["authenticated"] = True
                 self.renewed = True
                 self.warned = True
+                return self.USER_LOGIN_OK
             else:
-                self.logout()
-        return self.common()
+                return self.USER_LOGIN_FAILURE
+        else:
+            return self.USER_ALREADY_LOGGED
 
-    def get(self, request, *args, **kwargs):
-        """methode called on GET request on this view"""
+    def init_get(self, request):
         self.request = request
         self.service = request.GET.get('service')
         self.renew = True if request.GET.get('renew') else False
         self.gateway = request.GET.get('gateway')
         self.method = request.GET.get('method')
 
+    def get(self, request, *args, **kwargs):
+        """methode called on GET request on this view"""
+        self.init_get(request)
+        self.process_get()
+        return self.common()
+
+    def process_get(self):
         # generate a new LT if none is present
-        request.session['lt'] = request.session.get('lt', utils.gen_lt())
+        self.request.session['lt'] = self.request.session.get('lt', utils.gen_lt())
 
-        if not request.session.get("authenticated") or self.renew:
+        if not self.request.session.get("authenticated") or self.renew:
             self.init_form()
-        return self.common()
+            return self.USER_NOT_AUTHENTICATED
+        return self.USER_AUTHENTICATED
 
     def init_form(self, values=None):
         self.form = forms.UserCredential(
-            self.request,
             values,
             initial={
                 'service': self.service,
@@ -345,7 +392,6 @@ class Auth(View):
         if not username or not password or not service:
             return HttpResponse("no\n", content_type="text/plain")
         form = forms.UserCredential(
-            request,
             request.POST,
             initial={
                 'service': service,
@@ -355,10 +401,17 @@ class Auth(View):
         )
         if form.is_valid():
             try:
-                user = models.User.objects.get(
-                    username=form.cleaned_data['username'],
-                    session_key=request.session.session_key
-                )
+                try:
+                    user = models.User.objects.get(
+                        username=form.cleaned_data['username'],
+                        session_key=request.session.session_key
+                    )
+                except models.User.DoesNotExist:
+                    user = models.User.objects.create(
+                        username=form.cleaned_data['username'],
+                        session_key=request.session.session_key
+                    )
+                user.save()
                 # is the service allowed
                 service_pattern = ServicePattern.validate(service)
                 # is the current user allowed on this service

requirements-dev.txt

+tox==1.8.1
+pytest==2.6.4
+pytest-django==2.7.0
+pytest-pythonpath==0.3
+requests>=2.4
+django-picklefield>=0.3.1
+requests_futures>=0.9.5
+django-bootstrap3>=5.4
+lxml>=3.4

requirements.txt

+setuptools>=5.5
+requests>=2.4
+requests_futures>=0.9.5
+django-picklefield>=0.3.1
+django-bootstrap3>=5.4
+lxml>=3.4
+

tests/dummy.py

+from cas_server import models
+
+class DummyUserManager(object):
+    def __init__(self, username, session_key):
+        self.username = username
+        self.session_key = session_key
+    def get(self, username=None, session_key=None):
+        if username == self.username and session_key == self.session_key:
+            return models.User(username=username, session_key=session_key)
+        else:
+            raise models.User.DoesNotExist()
+
+class DummyTicketManager(object):
+    def __init__(self, ticket_class, service, ticket):
+        self.ticket_class = ticket_class
+        self.service = service
+        self.ticket = ticket
+
+    def create(self, **kwargs):
+        for field in models.ServiceTicket._meta.fields:
+            field.allow_unsaved_instance_assignment = True
+        return self.ticket_class(**kwargs)
+
+    def filter(self, *args, **kwargs):
+        return DummyQuerySet()
+
+    def get(self, **kwargs):
+        if 'value' in kwargs:
+            if kwargs['value'] != self.ticket:
+                raise self.ticket_class.DoesNotExist()
+        else:
+            kwargs['value'] = self.ticket
+        
+        if 'service' in kwargs:
+            if kwargs['service'] != self.service:
+                raise self.ticket_class.DoesNotExist()
+        else:
+            kwargs['service'] = self.service
+        if not 'user' in kwargs:
+            kwargs['user'] = models.User(username="test")
+        
+        for field in models.ServiceTicket._meta.fields:
+            field.allow_unsaved_instance_assignment = True
+        for key in kwargs.keys():
+            if '__' in key:
+                del kwargs[key]
+        kwargs['attributs'] = {'mail': 'test@example.com'}
+        kwargs['service_pattern'] = models.ServicePattern()
+        return self.ticket_class(**kwargs)
+
+
+
+class DummySession(dict):
+    session_key = "test_session"
+
+    def set_expiry(self, int):
+        pass
+
+
+class DummyQuerySet(set):
+    pass

tests/init.py

+import django
+from django.conf import settings
+from django.contrib import messages
+
+settings.configure()
+settings.STATIC_URL = "/static/"
+settings.DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': '/dev/null',
+    }
+}
+settings.INSTALLED_APPS = (
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'bootstrap3',
+    'cas_server',
+)
+
+settings.ROOT_URLCONF = "/"
+settings.CAS_AUTH_CLASS = 'cas_server.auth.TestAuthUser'
+
+try:
+    django.setup()
+except AttributeError:
+    pass
+messages.add_message = lambda x,y,z:None
+

tests/test_validate_service.py

+from __future__ import absolute_import
+from .init import *
+
+from django.test import RequestFactory
+
+import os
+import pytest
+from lxml import etree
+from cas_server.views import ValidateService
+from cas_server import models
+
+from .dummy import *
+
+@pytest.mark.django_db
+def test_validate_service_view_ok():
+    factory = RequestFactory()
+    request = factory.get('/serviceValidate?ticket=ST-random&service=https://www.example.com')
+
+    request.session = DummySession()
+
+    models.ServiceTicket.objects = DummyTicketManager(models.ServiceTicket, 'https://www.example.com', "ST-random")
+    models.ServiceTicket.save = lambda x:None
+
+    validate = ValidateService()
+    validate.allow_proxy_ticket = False
+    response = validate.get(request)
+
+    assert response.status_code == 200
+
+    root = etree.fromstring(response.content)
+    users = root.xpath("//cas:user", namespaces={'cas': "http://www.yale.edu/tp/cas"})
+
+    assert len(users) == 1
+    assert users[0].text == "test"
+
+    attributes = root.xpath("//cas:attributes", namespaces={'cas': "http://www.yale.edu/tp/cas"})
+
+    assert len(attributes) == 1
+    
+    attrs = {}
+    for attr in attributes[0]:
+        attrs[attr.tag[len("http://www.yale.edu/tp/cas")+2:]]=attr.text
+
+    assert 'mail' in attrs
+    assert attrs['mail'] == 'test@example.com'
+
+
+
+@pytest.mark.django_db
+def test_validate_service_view_badservice():
+    factory = RequestFactory()
+    request = factory.get('/serviceValidate?ticket=ST-random&service=https://www.example1.com')
+
+    request.session = DummySession()
+
+    models.ServiceTicket.objects = DummyTicketManager(models.ServiceTicket, 'https://www.example2.com', "ST-random")
+    models.ServiceTicket.save = lambda x:None
+
+    validate = ValidateService()
+    validate.allow_proxy_ticket = False
+    response = validate.get(request)
+
+    assert response.status_code == 200
+
+    root = etree.fromstring(response.content)
+
+    error = root.xpath("//cas:authenticationFailure", namespaces={'cas': "http://www.yale.edu/tp/cas"})
+    
+    assert len(error) == 1
+    assert error[0].attrib['code'] == 'INVALID_SERVICE'
+
+@pytest.mark.django_db
+def test_validate_service_view_badticket():
+    factory = RequestFactory()
+    request = factory.get('/serviceValidate?ticket=ST-random1&service=https://www.example.com')
+
+    request.session = DummySession()
+
+    models.ServiceTicket.objects = DummyTicketManager(models.ServiceTicket, 'https://www.example.com', "ST-random2")
+    models.ServiceTicket.save = lambda x:None
+
+    validate = ValidateService()
+    validate.allow_proxy_ticket = False
+    response = validate.get(request)
+
+    assert response.status_code == 200
+
+    root = etree.fromstring(response.content)
+
+    error = root.xpath("//cas:authenticationFailure", namespaces={'cas': "http://www.yale.edu/tp/cas"})
+    
+    assert len(error) == 1
+    assert error[0].attrib['code'] == 'INVALID_TICKET'

tests/test_views_auth.py

+from __future__ import absolute_import
+from .init import *
+
+from django.test import RequestFactory
+
+import os
+import pytest
+
+from cas_server.views import Auth
+from cas_server import models
+
+from .dummy import *
+
+settings.CAS_AUTH_SHARED_SECRET = "test"
+
+@pytest.mark.django_db
+def test_auth_view_goodpass():
+    factory = RequestFactory()
+    request = factory.post('/auth', {'username':'test', 'password':'test', 'service':'https://www.example.com', 'secret':'test'})
+
+    request.session = DummySession()
+
+    models.User.objects = DummyUserManager(username="test", session_key=request.session.session_key)
+    models.ServiceTicket.objects = DummyTicketManager(models.ServiceTicket, 'https://www.example.com', "ST-random")
+    models.ServicePattern.validate = classmethod(lambda x,y: models.ServicePattern())
+
+    auth = Auth()
+    response = auth.post(request)
+
+    assert response.status_code == 200
+    assert response.content == "yes\n"
+
+
+def test_auth_view_badpass():
+    factory = RequestFactory()
+    request = factory.post('/auth', {'username':'test', 'password':'badpass', 'service':'https://www.example.com', 'secret':'test'})
+
+    request.session = DummySession()
+
+    models.User.objects = DummyUserManager(username="test", session_key=request.session.session_key)
+    models.ServiceTicket.objects = DummyTicketManager(models.ServiceTicket, 'https://www.example.com', "ST-random")
+    models.ServicePattern.validate = classmethod(lambda x,y: models.ServicePattern())
+
+    auth = Auth()
+    response = auth.post(request)
+
+    assert response.status_code == 200
+    assert response.content == "no\n"
+

tests/test_views_login.py

+from __future__ import absolute_import
+from .init import *
+
+from django.test import RequestFactory
+
+import os
+import pytest
+
+from cas_server.views import LoginView
+from cas_server import models
+
+from .dummy import *
+
+
+
+def test_login_view_post_goodpass_goodlt():
+    factory = RequestFactory()
+    request = factory.post('/login', {'username':'test', 'password':'test', 'lt':'LT-random'})
+    request.session = DummySession()
+
+    request.session['lt'] = 'LT-random'
+
+    request.session["username"] = os.urandom(20)
+    request.session["warn"] = os.urandom(20)
+
+    login = LoginView()
+    login.init_post(request)
+
+    ret = login.process_post(pytest=True)
+
+    assert ret == LoginView.USER_LOGIN_OK
+    assert request.session.get("authenticated") == True
+    assert request.session.get("username") == "test"
+    assert request.session.get("warn") == False
+
+def test_login_view_post_badlt():
+    factory = RequestFactory()
+    request = factory.post('/login', {'username':'test', 'password':'test', 'lt':'LT-random1'})
+    request.session = DummySession()
+
+    request.session['lt'] = 'LT-random2'
+
+    authenticated = os.urandom(20)
+    username = os.urandom(20)
+    warn = os.urandom(20)
+
+    request.session["authenticated"] = authenticated
+    request.session["username"] = username
+    request.session["warn"] = warn
+
+    login = LoginView()
+    login.init_post(request)
+
+    ret = login.process_post(pytest=True)
+
+    assert ret == LoginView.INVALID_LOGIN_TICKET
+    assert request.session.get("authenticated") == authenticated
+    assert request.session.get("username") == username
+    assert request.session.get("warn") == warn
+
+def test_login_view_post_badpass_good_lt():
+    factory = RequestFactory()
+    request = factory.post('/login', {'username':'test', 'password':'badpassword', 'lt':'LT-random'})
+    request.session = DummySession()
+
+    request.session['lt'] = 'LT-random'
+
+    login = LoginView()
+    login.init_post(request)
+    ret = login.process_post()
+
+    assert ret == LoginView.USER_LOGIN_FAILURE
+    assert not request.session.get("authenticated")
+    assert not request.session.get("username")
+    assert not request.session.get("warn")
+
+
+def test_view_login_get_unauth():
+    factory = RequestFactory()
+    request = factory.post('/login')
+    request.session = DummySession()
+
+    login = LoginView()
+    login.init_get(request)
+    ret = login.process_get()
+
+    assert ret == LoginView.USER_NOT_AUTHENTICATED
+
+    login = LoginView()
+    response = login.get(request)
+
+    assert response.status_code == 200
+
+@pytest.mark.django_db
+def test_view_login_get_auth():
+    factory = RequestFactory()
+    request = factory.post('/login')
+    request.session = DummySession()
+
+    request.session["authenticated"] = True
+    request.session["username"] = "test"
+    request.session["warn"] = False
+
+    login = LoginView()
+    login.init_get(request)
+    ret = login.process_get()
+
+    assert ret == LoginView.USER_AUTHENTICATED
+
+    models.User.objects = DummyUserManager(username="test", session_key=request.session.session_key)
+
+    login = LoginView()
+    response = login.get(request)
+
+    assert response.status_code == 200
+
+@pytest.mark.django_db
+def test_view_login_get_auth_service():
+    factory = RequestFactory()
+    request = factory.post('/login?service=https://www.example.com')
+    request.session = DummySession()
+
+    request.session["authenticated"] = True
+    request.session["username"] = "test"