diff --git a/fabfile.py b/fabfile.py
index 08a84a310..298c9bc5b 100644
--- a/fabfile.py
+++ b/fabfile.py
@@ -31,7 +31,7 @@ def coverage_report_plain():
     Runs all tests and prints the coverage report.
     """
     test()
-    local('coverage report -m')
+    local('coverage report -m --fail-under=73')
 
 
 def coverage():
diff --git a/tests/config/test_config.py b/tests/config/test_config.py
index 808e96875..fd16a5c5d 100644
--- a/tests/config/test_config.py
+++ b/tests/config/test_config.py
@@ -13,6 +13,7 @@ from django.contrib.auth.models import Permission
 from django.contrib.contenttypes.models import ContentType
 from django.dispatch import receiver
 from django.test.client import Client
+from mock import patch
 
 from openslides.config.api import (config, ConfigGroup, ConfigGroupedPage,
                                    ConfigPage, ConfigVariable)
@@ -210,6 +211,18 @@ class ConfigFormTest(TestCase):
         text = '<script src="/static/javascript/test-config-djg4dFGVslk4209f.js" type="text/javascript"></script>'
         self.assertContains(response=response, text=text, status_code=200)
 
+    @patch('openslides.config.views.FormView.get_context_data')
+    def test_extra_stylefiles_other_context(self, mock_get_context_data):
+        """
+        Tests the view with empty context data at the beginning.
+        """
+        mock_get_context_data.return_value = {}
+        response = self.client_manager.get('/config/testgroupedpage1/')
+        text1 = '<link href="/static/styles/test-config-sjNN56dFGDrg2.css" type="text/css" rel="stylesheet" />'
+        text2 = '<script src="/static/javascript/test-config-djg4dFGVslk4209f.js" type="text/javascript"></script>'
+        self.assertContains(response=response, text=text1, status_code=200)
+        self.assertContains(response=response, text=text2, status_code=200)
+
 
 class ConfigWeightTest(TestCase):
 
diff --git a/tests/core/test_views.py b/tests/core/test_views.py
index 687b8eeee..27f5f90de 100644
--- a/tests/core/test_views.py
+++ b/tests/core/test_views.py
@@ -9,16 +9,53 @@
 """
 
 from django.test.client import Client
+from mock import MagicMock, patch
 
 from openslides import get_version
+from openslides.agenda.models import Item
 from openslides.participant.models import User
 from openslides.utils.test import TestCase
 
 
 class VersionViewTest(TestCase):
-    def test_get(self):
+    def setUp(self):
         User.objects.create_user('CoreMaximilian', 'xxx@xx.xx', 'default')
-        client = Client()
-        client.login(username='CoreMaximilian', password='default')
-        response = client.get('/version/')
+        self.client = Client()
+        self.client.login(username='CoreMaximilian', password='default')
+
+    def test_get(self):
+        response = self.client.get('/version/')
         self.assertContains(response, get_version(), status_code=200)
+
+    @patch('openslides.core.views.settings')
+    def test_with_missing_plugin(self, mock_settings):
+        """
+        Tests that an not existing app does not appear on the version view.
+        """
+        mock_settings.INSTALLED_PLUGINS = ('unexisting_app_nvhbkdfgmnsd',)
+        response = self.client.get('/version/')
+        self.assertNotContains(response, 'unexisting_app_nvhbkdfgmnsd', status_code=200)
+
+    @patch('openslides.core.views.settings')
+    @patch('openslides.core.views.import_module')
+    def test_with_plugin_without_version(self, mock_import_module, mock_settings):
+        """
+        Tests that an exisiting app does not appear in the version view if
+        there are no version data.
+        """
+        mock_settings.INSTALLED_PLUGINS = ('existing_app_without_version',)
+        mock_module = MagicMock(spec=['some_useless_attribute_ghbnckj756j36'])
+        mock_import_module.configure_mock(return_value=mock_module)
+        response = self.client.get('/version/')
+        self.assertNotContains(response, 'unexisting_app_nvhbkdfgmnsd', status_code=200)
+
+
+class SearchViewTest(TestCase):
+    def test_simple_search(self):
+        Item.objects.create(title='agenda_item_bnghfdjkgndkjdfg')
+        User.objects.create_user('CoreMaximilian', 'xxx@xx.xx', 'default')
+        self.client = Client()
+        self.client.login(username='CoreMaximilian', password='default')
+        response = self.client.get('/search/?q=agenda_item_bnghfd')
+        text = '<span class="highlighted">agenda_item_bnghfd</span>jkgndkjdfg'
+        self.assertContains(response, text)
diff --git a/tests/test_init.py b/tests/test_init.py
index 0683d8dd1..9845d03b8 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -7,6 +7,10 @@
     :license: GNU GPL, see LICENSE for more details.
 """
 
+import tempfile
+
+from mock import MagicMock, patch
+
 from openslides import get_git_commit_id, get_version
 from openslides.utils.test import TestCase
 
@@ -24,10 +28,28 @@ class InitTest(TestCase):
         self.assertEqual(get_version(version=(2, 5, 3, 'alpha', 0), release=True), '2.5.3a0')
         self.assertEqual(get_version(version=(2, 5, 3, 'final', 0), release=True), '2.5.3')
 
-    def test_get_git_commit_id(self):
+    def test_get_git_commit_id_general(self):
         """
         Tests the lenght of the git commit id.
         """
         git_commit_id = get_git_commit_id()
         if not git_commit_id == 'unknown':
             self.assertEqual(len(git_commit_id), 40)
+
+    @patch('__builtin__.open', MagicMock(side_effect=IOError))
+    def test_get_commit_id_unknown(self):
+        """
+        Tests unknown git commit id.
+        """
+        self.assertEqual(get_git_commit_id(), 'unknown')
+
+    @patch('__builtin__.open')
+    def test_get_commit_id_without_ref(self, mock):
+        """
+        Tests reading the content of the git_commit_id file.
+        """
+        with tempfile.TemporaryFile() as git_file:
+            git_file.write('test_id_ahyuGo7yefai7Nai')
+            git_file.seek(0)
+            mock.return_value = git_file
+            self.assertEqual(get_git_commit_id(), 'test_id_ahyuGo7yefai7Nai')
diff --git a/tests/utils/test_main.py b/tests/utils/test_main.py
index 0e1122c2b..f43a726df 100644
--- a/tests/utils/test_main.py
+++ b/tests/utils/test_main.py
@@ -12,13 +12,18 @@ import os
 import sys
 
 from django.core.exceptions import ImproperlyConfigured
+from mock import MagicMock, patch
 
 from openslides.utils.main import (
     get_browser_url,
+    get_database_path_from_settings,
     get_default_settings_path,
     get_default_user_data_path,
+    get_port,
+    get_portable_paths,
     get_user_data_path_values,
     setup_django_settings_module,
+    start_browser,
     UNIX_VERSION,
     WINDOWS_PORTABLE_VERSION)
 from openslides.utils.test import TestCase
@@ -64,3 +69,31 @@ class TestFunctions(TestCase):
         self.assertEqual(get_browser_url('123.456.789.365', 80), 'http://123.456.789.365')
         self.assertEqual(get_browser_url('0.0.0.0', 6789), 'http://localhost:6789')
         self.assertEqual(get_browser_url('0.0.0.0', 80), 'http://localhost')
+
+    def test_get_port(self):
+        class MyException(Exception):
+            pass
+        self.assertEqual(get_port('localhost', 8234), 8234)
+        with patch('openslides.utils.main.socket') as mock_socket:
+            mock_socket.error = MyException
+            mock_socket.socket().listen = MagicMock(side_effect=MyException)
+            self.assertEqual(get_port('localhost', 80), 8000)
+
+    @patch('openslides.utils.main.time')
+    @patch('openslides.utils.main.webbrowser')
+    def test_start_browser(self,  mock_webbrowser, mock_time):
+        browser_mock = MagicMock()
+        mock_webbrowser.get.return_value = browser_mock
+        start_browser('http://localhost:8234')
+        browser_mock.open.assert_called_with('http://localhost:8234')
+
+    def test_get_database_path_from_settings_memory(self):
+        self.assertEqual(get_database_path_from_settings(), ':memory:')
+
+    @patch('openslides.utils.main.get_win32_portable_path')
+    def test_get_portable_paths(self, mock_get_win32_portable_path):
+        mock_get_win32_portable_path.return_value = '/test_path_AhgheeGee1eixaeYe1ra'
+        self.assertEqual(get_portable_paths('database'), '/test_path_AhgheeGee1eixaeYe1ra/openslides/database.sqlite')
+        self.assertEqual(get_portable_paths('media'), '/test_path_AhgheeGee1eixaeYe1ra/openslides/media/')
+        self.assertEqual(get_portable_paths('whoosh_index'), '/test_path_AhgheeGee1eixaeYe1ra/openslides/whoosh_index/')
+        self.assertRaisesMessage(TypeError, 'Unknown type unknown_string', get_portable_paths, 'unknown_string')