bugfix, fixed tests and adjust testing configs

.coveragerc

@@ -1,6 +1,5 @@
 [run]
 branch = True
 omit =
-    */__init__.py
-    howl/migrations/*
-    howl/tests/*
+	*/__init__.py
+	*migrations*

howl/models.py

@@ -1,6 +1,7 @@
-from datetime import datetime, timedelta
+from datetime import timedelta
 
 from django.db import models
+from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _
 
 from .operators import get_operator_class, get_operator_types
@@ -28,10 +29,10 @@ def compare(self, compare_value):
 
         if operator_class(self).compare(compare_value):
             Alert.clear(self)
-            return False
+            return True
 
         Alert.set(self, compare_value)
-        return True
+        return False
 
 
 class Alert(models.Model):
@@ -66,7 +67,7 @@ def set(cls, observer, compare_value):
 
         alert_time = obj.timestamp + timedelta(seconds=observer.waiting_period)
 
-        if alert_time < datetime.now():
+        if alert_time < timezone.now():
             if obj.state == obj.STATE_NOTIFIED and observer.alert_every_time:
                 obj.value = compare_value
                 obj.save(update_fields=['value'])

howl/tests/test_admin.py

@@ -19,7 +19,7 @@ class TestAlertAdmin:
 
     def test_list_display(self, rf):
         modeladmin = AlertAdmin(Alert, admin.site)
-        assert modeladmin.list_display == ('get_observer_name', 'timestamp', 'state')
+        assert modeladmin.list_display == ('get_observer_name', 'timestamp', 'value', 'state')
 
     def test_get_observer_name(self, rf):
         observer = ObserverFactory.create()

howl/tests/test_models.py

@@ -14,9 +14,9 @@ def test_repr(self):
         assert str(obj) == 'test observer'
 
     @pytest.mark.parametrize('value, compare_value, return_value, count_objects', [
-        (49, 50, True, 1),
-        (50, 50, False, 0),
-        (51, 50, True, 1),
+        (49, 50, False, 1),
+        (50, 50, True, 0),
+        (51, 50, False, 1),
     ])
     def test_compare(self, value, compare_value, return_value, count_objects):
         obj = ObserverFactory.create(value=value)

pytest.ini

@@ -17,4 +17,7 @@ pep8ignore =
 flakes-ignore =
 	*/.ropeproject/* ALL
 
+isort_ignore=
+	*migrations/*.py
+
 DJANGO_SETTINGS_MODULE = howl.tests.settings