eggs/djangorecipe-0.20-py2.6.egg/djangorecipe/tests.py
changeset 69 c6bca38c1cbf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eggs/djangorecipe-0.20-py2.6.egg/djangorecipe/tests.py	Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,790 @@
+import unittest
+import tempfile
+import os
+import sys
+import shutil
+
+import mock
+from zc.buildout import UserError
+from zc.recipe.egg.egg import Scripts as ZCRecipeEggScripts
+
+from djangorecipe.recipe import Recipe
+
+# Add the testing dir to the Python path so we can use a fake Django
+# install. This needs to be done so that we can use this as a base for
+# mock's with some of the tests.
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'testing'))
+
+# Now that we have a fake Django on the path we can import the
+# scripts. These are depenent on a Django install, hence the fake one.
+from djangorecipe import test
+from djangorecipe import manage
+
+
+class TestRecipe(unittest.TestCase):
+
+    def setUp(self):
+        # Create a directory for our buildout files created by the recipe
+        self.buildout_dir = tempfile.mkdtemp('djangorecipe')
+
+        self.bin_dir = os.path.join(self.buildout_dir, 'bin')
+        self.develop_eggs_dir = os.path.join(self.buildout_dir,
+                                             'develop-eggs')
+        self.eggs_dir = os.path.join(self.buildout_dir, 'eggs')
+        self.parts_dir = os.path.join(self.buildout_dir, 'parts')
+
+        # We need to create the bin dir since the recipe should be able to expect it exists
+        os.mkdir(self.bin_dir)
+
+        self.recipe = Recipe({'buildout': {'eggs-directory': self.eggs_dir,
+                                           'develop-eggs-directory': self.develop_eggs_dir,
+                                           'python': 'python-version',
+                                           'bin-directory': self.bin_dir,
+                                           'parts-directory': self.parts_dir,
+                                           'directory': self.buildout_dir,
+                                           },
+                              'python-version': {'executable': sys.executable}},
+                             'django',
+                             {'recipe': 'djangorecipe',
+                              'version': 'trunk'})
+
+    def tearDown(self):
+        # Remove our test dir
+        shutil.rmtree(self.buildout_dir)
+
+    def test_consistent_options(self):
+        # Buildout is pretty clever in detecting changing options. If
+        # the recipe modifies it's options during initialisation it
+        # will store this to determine wheter it needs to update or do
+        # a uninstall & install. We need to make sure that we normally
+        # do not trigger this. That means running the recipe with the
+        # same options should give us the same results.
+        self.assertEqual(*[
+                Recipe({'buildout': {'eggs-directory': self.eggs_dir,
+                                     'develop-eggs-directory': self.develop_eggs_dir,
+                                     'python': 'python-version',
+                                     'bin-directory': self.bin_dir,
+                                     'parts-directory': self.parts_dir,
+                                     'directory': self.buildout_dir,
+                                     },
+                        'python-version': {'executable': sys.executable}},
+                       'django',
+                       {'recipe': 'djangorecipe',
+                        'version': 'trunk'}).options.copy() for i in range(2)])
+
+    def test_svn_url(self):
+        # Make sure that only a few specific type of url's are
+        # considered svn url's
+
+        # This is a plain release version so it should indicate it is
+        # not a svn url
+        self.failIf(self.recipe.is_svn_url('0.96.2'))
+        # The next line specifies a proper link with the trunk
+        self.assert_(self.recipe.is_svn_url('trunk'))
+        # A url looking like trunk should also fail
+        self.failIf(self.recipe.is_svn_url('trunka'))
+        # A full svn url including version should work
+        self.assert_(self.recipe.is_svn_url(
+            'http://code.djangoproject.com/svn/django/branches/newforms-admin@7833'))
+        # HTTPS should work too
+        self.assert_(self.recipe.is_svn_url(
+            'https://code.djangoproject.com/svn/django/branches/newforms-admin@7833'))
+        # Svn+ssh should work
+        self.assert_(self.recipe.is_svn_url(
+            'svn+ssh://myserver/newforms-admin@7833'))
+        # Svn protocol through any custom tunnel defined in ~/.subversion/config should work
+        self.assert_(self.recipe.is_svn_url(
+            'svn+MY_Custom-tunnel://myserver/newforms-admin@7833'))
+        # Using a non existent protocol should not be a svn url?
+        self.failIf(self.recipe.is_svn_url(
+            'unknown://myserver/newforms-admin@7833'))
+
+    def test_command(self):
+        # The command method is a wrapper for subprocess which excutes
+        # a command and return's it's status code. We will demonstrate
+        # this with a simple test of running `dir`.
+        self.failIf(self.recipe.command('echo'))
+        # Executing a non existing command should return an error code
+        self.assert_(self.recipe.command('spamspamspameggs'))
+
+    @mock.patch('subprocess', 'Popen')
+    def test_command_verbose_mode(self, popen):
+        # When buildout is put into verbose mode the command methode
+        # should stop capturing the ouput of it's commands.
+        popen.return_value = mock.Mock()
+        self.recipe.buildout['buildout']['verbosity'] = 'verbose'
+        self.recipe.command('silly-command')
+        self.assertEqual(
+            popen.call_args,
+            (('silly-command',), {'shell': True, 'stdout': None}))
+
+    def test_create_file(self):
+        # The create file helper should create a file at a certain
+        # location unless it already exists. We will need a
+        # non-existing file first.
+        f, name = tempfile.mkstemp()
+        # To show the function in action we need to delete the file
+        # before testing.
+        os.remove(name)
+        # The method accepts a template argument which it will use
+        # with the options argument for string substitution.
+        self.recipe.create_file(name, 'Spam %s', 'eggs')
+        # Let's check the contents of the file
+        self.assertEqual(open(name).read(), 'Spam eggs')
+        # If we try to write it again it will just ignore our request
+        self.recipe.create_file(name, 'Spam spam spam %s', 'eggs')
+        # The content of the file should therefore be the same
+        self.assertEqual(open(name).read(), 'Spam eggs')
+        # Now remove our temp file
+        os.remove(name)
+
+    def test_generate_secret(self):
+        # To create a basic skeleton the recipe also generates a
+        # random secret for the settings file. Since it should very
+        # unlikely that it will generate the same key a few times in a
+        # row we will test it with letting it generate a few keys.
+        self.assert_(len(set(
+                    [self.recipe.generate_secret() for i in xrange(10)])) > 1)
+
+    def test_version_to_svn(self):
+        # Version specification that lead to a svn repository can be
+        # specified in different ways. Just specifying `trunk` should
+        # be enough to get the full url to the Django trunk.
+        self.assertEqual(self.recipe.version_to_svn('trunk'),
+                         'http://code.djangoproject.com/svn/django/trunk/')
+        # Any other specification should lead to the url it is given
+        self.assertEqual(self.recipe.version_to_svn('svn://somehost/trunk'),
+                         'svn://somehost/trunk')
+
+    def test_version_to_download_suffic(self):
+        # To create standard names for the download directory a method
+        # is provided which converts a version to a dir suffix. A
+        # simple pointer to trunk should return svn.
+        self.assertEqual(self.recipe.version_to_download_suffix('trunk'),
+                         'svn')
+        # Any other url should return the last path component. This
+        # works out nicely for branches or version pinned url's.
+        self.assertEqual(self.recipe.version_to_download_suffix(
+                'http://monty/branches/python'), 'python')
+
+    def test_make_protocol_scripts(self):
+        # To ease deployment a WSGI script can be generated. The
+        # script adds any paths from the `extra_paths` option to the
+        # Python path.
+        self.recipe.options['wsgi'] = 'true'
+        self.recipe.options['fcgi'] = 'true'
+        self.recipe.make_scripts([], [])
+        # This should have created a script in the bin dir
+        wsgi_script = os.path.join(self.bin_dir, 'django.wsgi')
+        self.assert_(os.path.exists(wsgi_script))
+        # The contents should list our paths
+        contents = open(wsgi_script).read()
+        # It should also have a reference to our settings module
+        self.assert_('project.development' in contents)
+        # and a line which set's up the WSGI app
+        self.assert_("application = "
+                     "djangorecipe.wsgi.main('project.development', logfile='')"
+                     in contents)
+        self.assert_("class logger(object)" not in contents)
+
+        # Another deployment options is FCGI. The recipe supports an option to
+        # automatically create the required script.
+        fcgi_script = os.path.join(self.bin_dir, 'django.fcgi')
+        self.assert_(os.path.exists(fcgi_script))
+        # The contents should list our paths
+        contents = open(fcgi_script).read()
+        # It should also have a reference to our settings module
+        self.assert_('project.development' in contents)
+        # and a line which set's up the WSGI app
+        self.assert_("djangorecipe.fcgi.main('project.development', logfile='')"
+                     in contents)
+        self.assert_("class logger(object)" not in contents)
+
+        self.recipe.options['logfile'] = '/foo'
+        self.recipe.make_scripts([], [])
+        wsgi_script = os.path.join(self.bin_dir, 'django.wsgi')
+        contents = open(wsgi_script).read()
+        self.assert_("logfile='/foo'" in contents)
+
+        self.recipe.options['logfile'] = '/foo'
+        self.recipe.make_scripts([], [])
+        fcgi_script = os.path.join(self.bin_dir, 'django.fcgi')
+        contents = open(fcgi_script).read()
+        self.assert_("logfile='/foo'" in contents)
+
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    def test_make_protocol_scripts_return_value(self, scripts):
+        # The return value of make scripts lists the generated scripts.
+        self.recipe.options['wsgi'] = 'true'
+        self.recipe.options['fcgi'] = 'true'
+        scripts.return_value = ['some-path']
+        self.assertEqual(self.recipe.make_scripts([], []),
+                         ['some-path', 'some-path'])
+
+
+
+    def test_create_project(self):
+        # If a project does not exist already the recipe will create
+        # one.
+        project_dir = os.path.join(self.buildout_dir, 'project')
+        self.recipe.create_project(project_dir)
+        # This should have create a project directory
+        self.assert_(os.path.exists(project_dir))
+        # With this directory we should have __init__.py to make it a
+        # package
+        self.assert_(
+            os.path.exists(os.path.join(project_dir, '__init__.py')))
+        # There should also be a urls.py
+        self.assert_(
+            os.path.exists(os.path.join(project_dir, 'urls.py')))
+        # To make it easier to start using this project both a media
+        # and a templates folder are created
+        self.assert_(
+            os.path.exists(os.path.join(project_dir, 'media')))
+        self.assert_(
+            os.path.exists(os.path.join(project_dir, 'templates')))
+        # The project is ready to go since the recipe has generated a
+        # base settings, development and production file
+        for f in ('settings.py', 'development.py', 'production.py'):
+            self.assert_(
+                os.path.exists(os.path.join(project_dir, f)))
+
+    def test_create_test_runner(self):
+        # An executable script can be generated which will make it
+        # possible to execute the Django test runner. This options
+        # only works if we specify one or apps to test.
+        testrunner = os.path.join(self.bin_dir, 'test')
+
+        # This first argument sets extra_paths, we will use this to
+        # make sure the script can find this recipe
+        recipe_dir = os.path.abspath(
+            os.path.join(os.path.dirname(__file__), '..'))
+
+        # First we will show it does nothing by default
+        self.recipe.create_test_runner([recipe_dir], [])
+        self.failIf(os.path.exists(testrunner))
+
+        # When we specify an app to test it should create the the
+        # testrunner
+        self.recipe.options['test'] = 'knight'
+        self.recipe.create_test_runner([recipe_dir], [])
+        self.assert_(os.path.exists(testrunner))
+
+    def test_create_manage_script(self):
+        # This buildout recipe creates a alternative for the standard
+        # manage.py script. It has all the same functionality as the
+        # original one but it sits in the bin dir instead of within
+        # the project.
+        manage = os.path.join(self.bin_dir, 'django')
+        self.recipe.create_manage_script([], [])
+        self.assert_(os.path.exists(manage))
+
+    def test_create_manage_script_projectegg(self):
+        # When a projectegg is specified, then the egg specified
+        # should get used as the project file.
+        manage = os.path.join(self.bin_dir, 'django')
+        self.recipe.options['projectegg'] = 'spameggs'
+        self.recipe.create_manage_script([], [])
+        self.assert_(os.path.exists(manage))
+        # Check that we have 'spameggs' as the project
+        self.assert_("djangorecipe.manage.main('spameggs.development')"
+                     in open(manage).read())
+                     
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch(Recipe, 'create_manage_script')
+    @mock.patch(Recipe, 'create_test_runner')
+    @mock.patch('zc.recipe.egg', 'Develop')
+    def test_fulfills_django_dependency(self, rmtree, path_exists, 
+        urlretrieve, copytree, working_set, scripts, install_release, 
+        manage, testrunner, develop):
+        # Test for https://bugs.launchpad.net/djangorecipe/+bug/397864
+        # djangorecipe should always fulfil the 'Django' requirement.        
+        self.recipe.options['version'] = '1.0'
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        manage.return_value = []
+        scripts.return_value = []
+        testrunner.return_value = []
+        develop_install = mock.Mock()
+        develop.return_value = develop_install
+        self.recipe.install()
+
+        # We should see that Django was added as a develop egg.
+        options = develop.call_args[0][2]
+        self.assertEqual(options['location'], os.path.join(self.parts_dir, 'django'))
+        
+        # Check that the install() method for the develop egg was called with no args
+        first_method_name, args, kwargs = develop_install.method_calls[0]
+        self.assertEqual('install', first_method_name)
+        self.assertEqual(0, len(args))
+        self.assertEqual(0, len(kwargs))
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch(Recipe, 'create_manage_script')
+    @mock.patch(Recipe, 'create_test_runner')
+    @mock.patch('zc.recipe.egg', 'Develop')    
+    def test_extra_paths(self, rmtree, path_exists, urlretrieve,
+                                   copytree, working_set, scripts,
+                                   install_release, manage, testrunner,
+                                   develop):
+        # The recipe allows extra-paths to be specified. It uses these to
+        # extend the Python path within it's generated scripts.
+        self.recipe.options['version'] = '1.0'
+        self.recipe.options['extra-paths'] = 'somepackage\nanotherpackage'
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        manage.return_value = []
+        scripts.return_value = []
+        testrunner.return_value = []
+        develop.return_value = mock.Mock()        
+        self.recipe.install()
+        self.assertEqual(manage.call_args[0][0][-2:],
+                         ['somepackage', 'anotherpackage'])
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch(Recipe, 'create_manage_script')
+    @mock.patch(Recipe, 'create_test_runner')
+    @mock.patch('site', 'addsitedir')
+    @mock.patch('zc.recipe.egg', 'Develop')    
+    def test_pth_files(self, rmtree, path_exists, urlretrieve,
+                       copytree, working_set, scripts,
+                       install_release, manage, testrunner, addsitedir,
+                       develop):
+        # When a pth-files option is set the recipe will use that to add more
+        # paths to extra-paths.
+        self.recipe.options['version'] = '1.0'
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        scripts.return_value = []
+        manage.return_value = []
+        testrunner.return_value = []
+        develop.return_value = mock.Mock()
+        
+        # The mock values needed to demonstrate the pth-files option.
+        addsitedir.return_value = ['extra', 'dirs']
+        self.recipe.options['pth-files'] = 'somedir'
+
+        self.recipe.install()
+        self.assertEqual(addsitedir.call_args, (('somedir', set([])), {}))
+        # The extra-paths option has been extended.
+        self.assertEqual(self.recipe.options['extra-paths'], '\nextra\ndirs')
+
+    def test_create_wsgi_script_projectegg(self):
+        # When a projectegg is specified, then the egg specified
+        # should get used as the project in the wsgi script.
+        wsgi = os.path.join(self.bin_dir, 'django.wsgi')
+        recipe_dir = os.path.abspath(
+            os.path.join(os.path.dirname(__file__), '..'))
+        self.recipe.options['projectegg'] = 'spameggs'
+        self.recipe.options['wsgi'] = 'true'
+        self.recipe.make_scripts([recipe_dir], [])
+        self.assert_(os.path.exists(wsgi))
+        # Check that we have 'spameggs' as the project
+        self.assert_('spameggs.development' in open(wsgi).read())
+
+    def test_settings_option(self):
+        # The settings option can be used to specify the settings file
+        # for Django to use. By default it uses `development`.
+        self.assertEqual(self.recipe.options['settings'], 'development')
+        # When we change it an generate a manage script it will use
+        # this var.
+        self.recipe.options['settings'] = 'spameggs'
+        self.recipe.create_manage_script([], [])
+        manage = os.path.join(self.bin_dir, 'django')
+        self.assert_("djangorecipe.manage.main('project.spameggs')"
+                     in open(manage).read())
+
+    @mock.patch('urllib2', 'urlopen')
+    def test_get_release(self, mock):
+        # The get_release method fecthes a release tarball and
+        # extracts it. We have setup a mock so that it won't actually
+        # download the release. Let's call the code.
+        class FakeFile(object):
+            def read(self):
+                return 'Django tarball'
+            def close(self):
+                self.closed = True
+
+        tmp = tempfile.mkdtemp()
+        filename = os.path.join(tmp, 'django-0.96.2.tar.gz')
+        mock.return_value = FakeFile()
+        try:
+            self.assertEqual(
+                self.recipe.get_release('0.96.2', tmp),
+                filename)
+            # It tried to download the release through our mock
+            mock.assert_called_with(
+                'http://www.djangoproject.com/download/0.96.2/tarball/')
+            # The file should have been filled with the contents from the
+            # handle it got.
+            self.assertEqual(open(filename).read(), 'Django tarball')
+        finally:
+            shutil.rmtree(tmp)
+
+    @mock.patch('setuptools.archive_util', 'unpack_archive')
+    @mock.patch('shutil', 'move')
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os', 'listdir')
+    def test_install_release(self, unpack, move, rmtree, listdir):
+        # To install a release the recipe uses a specific method. We
+        # have have mocked all the calls which interact with the
+        # filesystem.
+        listdir.return_value = ('Django-0.96-2',)
+        self.recipe.install_release('0.96.2', 'downloads',
+                                    'downloads/django-0.96.2.tar.gz',
+                                    'parts/django')
+        # Let's see what the mock's have been called with
+        self.assertEqual(listdir.call_args,
+                         (('downloads/django-archive',), {}))
+        self.assertEqual(unpack.call_args,
+                         (('downloads/django-0.96.2.tar.gz',
+                           'downloads/django-archive'), {}))
+        self.assertEqual(move.call_args,
+                         (('downloads/django-archive/Django-0.96-2',
+                           'parts/django'), {}))
+        self.assertEqual(rmtree.call_args,
+                         (('downloads/django-archive',), {}))
+
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(Recipe, 'command')
+    def test_install_svn_version(self, copytree, command):
+        # Installation from svn is handled by a method. We have mocked
+        # the command method to avoid actual checkouts of Django.
+        self.recipe.install_svn_version('trunk', 'downloads',
+                                        'parts/django', False)
+        # This should have tried to do a checkout of the Django trunk
+        self.assertEqual(command.call_args,
+                         (('svn co http://code.djangoproject.com/svn/django/trunk/ downloads/django-svn -q',), {}))
+        # A copy command to the parts directory should also have been
+        # issued
+        self.assertEqual(copytree.call_args,
+                         (('downloads/django-svn', 'parts/django'), {}))
+
+    @mock.patch('shutil', 'copytree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch(Recipe, 'command')
+    def test_install_and_update_svn_version(self, copytree, exists, command):
+        # When an checkout has been done of a svn based installation
+        # is already done the recipe should just update it.
+        exists.return_value = True
+
+        self.recipe.install_svn_version('trunk', 'downloads',
+                                        'parts/django', False)
+        self.assertEqual(exists.call_args, (('downloads/django-svn',), {}))
+        self.assertEqual(command.call_args,
+                         (('svn up -q',), {'cwd': 'downloads/django-svn'}))
+
+    @mock.patch(Recipe, 'command')
+    def test_install_broken_svn(self, command):
+        # When the checkout from svn fails during a svn build the
+        # installation method raises an error. We will simulate this
+        # failure by telling our mock what to do.
+        command.return_value = 1
+        # The line above should indicate a failure (non-zero exit
+        # code)
+        self.assertRaises(UserError, self.recipe.install_svn_version,
+                          'trunk', 'downloads', 'parts/django', False)
+
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(Recipe, 'command')
+    def test_svn_install_from_cache(self, copytree, command):
+        # If the buildout is told to install from cache it will not do
+        # a checkout but instead an existing checkout
+        self.recipe.buildout['buildout']['install-from-cache'] = 'true'
+        # Now we can run the installation method
+        self.recipe.install_svn_version('trunk', 'downloads',
+                                        'parts/django', True)
+        # This should not have called the recipe's command method
+        self.failIf(command.called)
+        # A copy from the cache to the destination should have been
+        # made
+        self.assertEqual(copytree.call_args,
+                         (('downloads/django-svn', 'parts/django'), {}))
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch(Recipe, 'command')
+    def test_update_svn(self, rmtree, path_exists, urlretrieve,
+                        copytree, working_set, scripts,
+                        install_release, command):
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        # When the recipe is asked to do an update and the version is
+        # a svn version it just does an update on the parts folder.
+        self.recipe.update()
+        self.assertEqual('svn up -q', command.call_args[0][0])
+        # It changes the working directory so that the simple svn up
+        # command will work.
+        self.assertEqual(command.call_args[1].keys(), ['cwd'])
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch('subprocess', 'call')
+    def test_update_with_cache(self, rmtree, path_exists, urlretrieve,
+                               copytree, working_set, scripts,
+                               install_release, call_process):
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        # When the recipe is asked to do an update whilst in install
+        # from cache mode it just ignores it
+        self.recipe.install_from_cache = True
+        self.recipe.update()
+        self.failIf(call_process.called)
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch('subprocess', 'call')
+    def test_update_with_newest_false(self, rmtree, path_exists, urlretrieve,
+                                      copytree, working_set, scripts,
+                                      install_release, call_process):
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        # When the recipe is asked to do an update whilst in install
+        # from cache mode it just ignores it
+        self.recipe.buildout['buildout']['newest'] = 'false'
+        self.recipe.update()
+        self.assertFalse(call_process.called)
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch('zc.recipe.egg', 'Develop')        
+    def test_clear_existing_django(self, rmtree, path_exists, urlretrieve,
+                                   copytree, working_set, scripts,
+                                   install_release, develop):
+        # When the recipe is executed and Django is already installed
+        # within parts it should remove it. We will mock the exists
+        # check to make it let the recipe think it has an existing
+        # Django install.
+        self.recipe.options['version'] = '1.0'
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        scripts.return_value = []
+        develop.return_value = mock.Mock()
+        self.recipe.install()
+        # This should have called remove tree
+        self.assert_(rmtree.called)
+        # We will assert that the last two compontents of the path
+        # passed to rmtree are the ones we wanted to delete.
+        self.assertEqual(rmtree.call_args[0][0].split('/')[-2:],
+                         ['parts', 'django'])
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch(Recipe, 'command')
+    def test_update_pinned_svn_url(self, rmtree, path_exists, urlretrieve,
+                                   copytree, working_set, scripts,
+                                   install_release, command):
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        # Make sure that updating a pinned version is updated
+        # accordingly. It must not switch to updating beyond it's
+        # requested revision.
+        # The recipe does this by checking for an @ sign in the url /
+        # version.
+        self.recipe.is_svn_url = lambda version: True
+
+        self.recipe.options['version'] = 'http://testing/trunk@2531'
+        self.recipe.update()
+        self.assertEqual(command.call_args[0], ('svn up -r 2531 -q',))
+
+    @mock.patch('shutil', 'rmtree')
+    @mock.patch('os.path', 'exists')
+    @mock.patch('urllib', 'urlretrieve')
+    @mock.patch('shutil', 'copytree')
+    @mock.patch(ZCRecipeEggScripts, 'working_set')
+    @mock.patch('zc.buildout.easy_install', 'scripts')
+    @mock.patch(Recipe, 'install_release')
+    @mock.patch(Recipe, 'command')
+    def test_update_username_in_svn_url(self, rmtree, path_exists, urlretrieve,
+                                        copytree, working_set, scripts,
+                                        install_release, command):
+        path_exists.return_value = True
+        working_set.return_value = (None, [])
+        # Make sure that updating a version with a username
+        # in the URL works
+        self.recipe.is_svn_url = lambda version: True
+
+        # First test with both a revision and a username in the url
+        self.recipe.options['version'] = 'http://user@testing/trunk@2531'
+        self.recipe.update()
+        self.assertEqual(command.call_args[0], ('svn up -r 2531 -q',))
+
+        # Now test with only the username
+        self.recipe.options['version'] = 'http://user@testing/trunk'
+        self.recipe.update()
+        self.assertEqual(command.call_args[0], ('svn up -q',))
+
+    def test_python_option(self):
+        # The python option makes it possible to specify a specific Python
+        # executable which is to be used for the generated scripts.
+        recipe = Recipe({'buildout': {'eggs-directory': self.eggs_dir,
+                                      'develop-eggs-directory': self.develop_eggs_dir,
+                                      'python': 'python-version',
+                                      'bin-directory': self.bin_dir,
+                                      'parts-directory': self.parts_dir,
+                                      'directory': self.buildout_dir,
+                                     },
+                         'python-version': {'executable': '/python4k'}},
+                        'django',
+                        {'recipe': 'djangorecipe', 'version': 'trunk',
+                         'wsgi': 'true'})
+        recipe.make_scripts([], [])
+        # This should have created a script in the bin dir
+        wsgi_script = os.path.join(self.bin_dir, 'django.wsgi')
+        self.assertEqual(open(wsgi_script).readlines()[0], '#!/python4k\n')
+        # Changeing the option for only the part will change the used Python
+        # version.
+        recipe = Recipe({'buildout': {'eggs-directory': self.eggs_dir,
+                                      'develop-eggs-directory': self.develop_eggs_dir,
+                                      'python': 'python-version',
+                                      'bin-directory': self.bin_dir,
+                                      'parts-directory': self.parts_dir,
+                                      'directory': self.buildout_dir,
+                                     },
+                         'python-version': {'executable': '/python4k'},
+                         'py5k': {'executable': '/python5k'}},
+                        'django',
+                        {'recipe': 'djangorecipe', 'version': 'trunk',
+                         'python': 'py5k', 'wsgi': 'true'})
+        recipe.make_scripts([], [])
+        self.assertEqual(open(wsgi_script).readlines()[0], '#!/python5k\n')
+
+class ScriptTestCase(unittest.TestCase):
+
+    def setUp(self):
+        # We will also need to fake the settings file's module
+        self.settings = mock.sentinel.Settings
+        sys.modules['cheeseshop'] = mock.sentinel.CheeseShop
+        sys.modules['cheeseshop.development'] = self.settings
+        sys.modules['cheeseshop'].development = self.settings
+
+    def tearDown(self):
+        # We will clear out sys.modules again to clean up
+        for m in ['cheeseshop', 'cheeseshop.development']:
+            del sys.modules[m]
+
+
+class TestTestScript(ScriptTestCase):
+
+    @mock.patch('django.core.management', 'execute_manager')
+    def test_script(self, execute_manager):
+        # The test script should execute the standard Django test
+        # command with any apps given as its arguments.
+        test.main('cheeseshop.development',  'spamm', 'eggs')
+        # We only care about the arguments given to execute_manager
+        self.assertEqual(execute_manager.call_args[1],
+                         {'argv': ['test', 'test', 'spamm', 'eggs']})
+
+    @mock.patch('django.core.management', 'execute_manager')
+    def test_deeply_nested_settings(self, execute_manager):
+        # Settings files can be more than two levels deep. We need to
+        # make sure the test script can properly import those. To
+        # demonstrate this we need to add another level to our
+        # sys.modules entries.
+        settings = mock.sentinel.SettingsModule
+        nce = mock.sentinel.NCE
+        nce.development = settings
+        sys.modules['cheeseshop'].nce = nce
+        sys.modules['cheeseshop.nce'] = nce
+        sys.modules['cheeseshop.nce.development'] = settings
+
+        test.main('cheeseshop.nce.development',  'tilsit', 'stilton')
+        self.assertEqual(execute_manager.call_args[0], (settings,))
+
+    @mock.patch('sys', 'exit')
+    def test_settings_error(self, sys_exit):
+        # When the settings file cannot be imported the test runner
+        # wil exit with a message and a specific exit code.
+        test.main('cheeseshop.tilsit', 'stilton')
+        self.assertEqual(sys_exit.call_args, ((1,), {}))
+
+class TestManageScript(ScriptTestCase):
+
+    @mock.patch('django.core.management', 'execute_manager')
+    def test_script(self, execute_manager):
+        # The manage script is a replacement for the default manage.py
+        # script. It has all the same bells and whistles since all it
+        # does is call the normal Django stuff.
+        manage.main('cheeseshop.development')
+        self.assertEqual(execute_manager.call_args,
+                         ((self.settings,), {}))
+
+    @mock.patch('sys', 'exit')
+    def test_settings_error(self, sys_exit):
+        # When the settings file cannot be imported the management
+        # script it wil exit with a message and a specific exit code.
+        manage.main('cheeseshop.tilsit')
+        self.assertEqual(sys_exit.call_args, ((1,), {}))
+
+def setUp(test):
+    zc.buildout.testing.buildoutSetUp(test)
+
+    # Make a semi permanent download cache to speed up the test
+    tmp = tempfile.gettempdir()
+    cache_dir = os.path.join(tmp, 'djangorecipe-test-cache')
+    if not os.path.exists(cache_dir):
+        os.mkdir(cache_dir)
+
+    # Create the default.cfg which sets the download cache
+    home = test.globs['tmpdir']('home')
+    test.globs['mkdir'](home, '.buildout')
+    test.globs['write'](home, '.buildout', 'default.cfg',
+    """
+[buildout]
+download-cache = %(cache_dir)s
+    """ % dict(cache_dir=cache_dir))
+    os.environ['HOME'] = home
+
+    zc.buildout.testing.install('zc.recipe.egg', test)
+    zc.buildout.testing.install_develop('djangorecipe', test)
+
+
+def test_suite():
+    return unittest.TestSuite((
+            unittest.makeSuite(TestRecipe),
+            unittest.makeSuite(TestTestScript),
+            unittest.makeSuite(TestManageScript),
+            ))