X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/65a1431e753fccbbc735a58491b395070081dc8a..97eff0b3747614feaf9522d1338106ac98978c40:/tasklib/tests.py

diff --git a/tasklib/tests.py b/tasklib/tests.py
index fc30da4..0d4b50e 100644
--- a/tasklib/tests.py
+++ b/tasklib/tests.py
@@ -7,10 +7,14 @@ import json
 import pytz
 import six
 import shutil
+import sys
 import tempfile
 import unittest
 
-from .task import TaskWarrior, Task, ReadOnlyDictView, local_zone, DATE_FORMAT
+from .backends import TaskWarrior
+from .task import Task, ReadOnlyDictView
+from .lazy import LazyUUIDTask, LazyUUIDTaskSet
+from .serializing import DATE_FORMAT, local_zone
 
 # http://taskwarrior.org/docs/design/task.html , Section: The Attributes
 TASK_STANDARD_ATTRS = (
@@ -36,6 +40,11 @@ TASK_STANDARD_ATTRS = (
     'annotations',
 )
 
+
+def total_seconds_2_6(x):
+    return x.microseconds / 1e6 + x.seconds + x.days * 24 * 3600
+
+
 class TasklibTest(unittest.TestCase):
 
     def setUp(self):
@@ -74,6 +83,39 @@ class TaskFilterTest(TasklibTest):
         self.tw.tasks.all()[0].done()
         self.assertEqual(len(self.tw.tasks.completed()), 1)
 
+    def test_deleted_empty(self):
+        Task(self.tw, description="test task").save()
+        self.assertEqual(len(self.tw.tasks.deleted()), 0)
+
+    def test_deleted_non_empty(self):
+        Task(self.tw, description="test task").save()
+        self.assertEqual(len(self.tw.tasks.deleted()), 0)
+        self.tw.tasks.all()[0].delete()
+        self.assertEqual(len(self.tw.tasks.deleted()), 1)
+
+    def test_waiting_empty(self):
+        Task(self.tw, description="test task").save()
+        self.assertEqual(len(self.tw.tasks.waiting()), 0)
+
+    def test_waiting_non_empty(self):
+        Task(self.tw, description="test task").save()
+        self.assertEqual(len(self.tw.tasks.waiting()), 0)
+
+        t = self.tw.tasks.all()[0]
+        t['wait'] = datetime.datetime.now() + datetime.timedelta(days=1)
+        t.save()
+
+        self.assertEqual(len(self.tw.tasks.waiting()), 1)
+
+    def test_recurring_empty(self):
+        Task(self.tw, description="test task").save()
+        self.assertEqual(len(self.tw.tasks.recurring()), 0)
+
+    def test_recurring_non_empty(self):
+        Task(self.tw, description="test task", recur="daily",
+             due=datetime.datetime.now()).save()
+        self.assertEqual(len(self.tw.tasks.recurring()), 1)
+
     def test_filtering_by_attribute(self):
         Task(self.tw, description="no priority task").save()
         Task(self.tw, priority="H", description="high priority task").save()
@@ -84,7 +126,8 @@ class TaskFilterTest(TasklibTest):
 
         # Assert that the correct tasks are returned
         high_priority_task = self.tw.tasks.get(priority="H")
-        self.assertEqual(high_priority_task['description'], "high priority task")
+        self.assertEqual(high_priority_task['description'],
+                         "high priority task")
 
     def test_filtering_by_empty_attribute(self):
         Task(self.tw, description="no priority task").save()
@@ -237,7 +280,7 @@ class TaskTest(TasklibTest):
 
     def test_create_unsaved_task(self):
         # Make sure a new task is not saved unless explicitly called for
-        t = Task(self.tw, description="test task")
+        Task(self.tw, description="test task")
         self.assertEqual(len(self.tw.tasks.all()), 0)
 
     # TODO: once python 2.6 compatiblity is over, use context managers here
@@ -280,19 +323,25 @@ class TaskTest(TasklibTest):
 
         self.assertRaises(Task.CompletedTask, t.start)
 
-    def test_complete_deleted_task(self):
-        t = Task(self.tw, description="test task")
+    def test_add_completed_task(self):
+        t = Task(self.tw, description="test", status="completed",
+                 end=datetime.datetime.now())
         t.save()
-        t.delete()
 
-        self.assertRaises(Task.DeletedTask, t.done)
+    def test_add_multiple_completed_tasks(self):
+        t1 = Task(self.tw, description="test1", status="completed",
+                  end=datetime.datetime.now())
+        t2 = Task(self.tw, description="test2", status="completed",
+                  end=datetime.datetime.now())
+        t1.save()
+        t2.save()
 
-    def test_start_completed_task(self):
+    def test_complete_deleted_task(self):
         t = Task(self.tw, description="test task")
         t.save()
-        t.done()
+        t.delete()
 
-        self.assertRaises(Task.CompletedTask, t.start)
+        self.assertRaises(Task.DeletedTask, t.done)
 
     def test_starting_task(self):
         t = Task(self.tw, description="test task")
@@ -321,6 +370,69 @@ class TaskTest(TasklibTest):
         self.assertTrue(now.replace(microsecond=0) <= t['end'])
         self.assertEqual(t['status'], 'deleted')
 
+    def test_started_task_active(self):
+        t = Task(self.tw, description="test task")
+        t.save()
+        t.start()
+        self.assertTrue(t.active)
+
+    def test_unstarted_task_inactive(self):
+        t = Task(self.tw, description="test task")
+        self.assertFalse(t.active)
+        t.save()
+        self.assertFalse(t.active)
+
+    def test_start_active_task(self):
+        t = Task(self.tw, description="test task")
+        t.save()
+        t.start()
+        self.assertRaises(Task.ActiveTask, t.start)
+
+    def test_stop_completed_task(self):
+        t = Task(self.tw, description="test task")
+        t.save()
+        t.start()
+        t.done()
+
+        self.assertRaises(Task.InactiveTask, t.stop)
+
+        t = Task(self.tw, description="test task")
+        t.save()
+        t.done()
+
+        self.assertRaises(Task.InactiveTask, t.stop)
+
+    def test_stop_deleted_task(self):
+        t = Task(self.tw, description="test task")
+        t.save()
+        t.start()
+        t.delete()
+        t.stop()
+
+    def test_stop_inactive_task(self):
+        t = Task(self.tw, description="test task")
+        t.save()
+
+        self.assertRaises(Task.InactiveTask, t.stop)
+
+        t = Task(self.tw, description="test task")
+        t.save()
+        t.start()
+        t.stop()
+
+        self.assertRaises(Task.InactiveTask, t.stop)
+
+    def test_stopping_task(self):
+        t = Task(self.tw, description="test task")
+        t.datetime_normalizer(datetime.datetime.now())
+        t.save()
+        t.start()
+        t.stop()
+
+        self.assertEqual(t['end'], None)
+        self.assertEqual(t['status'], 'pending')
+        self.assertFalse(t.active)
+
     def test_modify_simple_attribute_without_space(self):
         t = Task(self.tw, description="test")
         t.save()
@@ -505,6 +617,23 @@ class TaskTest(TasklibTest):
         t2 = self.tw.tasks.get(uuid=t1['uuid'])
         self.assertEqual(t1.__hash__(), t2.__hash__())
 
+    def test_hash_unequal_unsaved_tasks(self):
+        # Compare the hash of the task using two different objects
+        t1 = Task(self.tw, description="test task 1")
+        t2 = Task(self.tw, description="test task 2")
+
+        self.assertNotEqual(t1.__hash__(), t2.__hash__())
+
+    def test_hash_unequal_saved_tasks(self):
+        # Compare the hash of the task using two different objects
+        t1 = Task(self.tw, description="test task 1")
+        t2 = Task(self.tw, description="test task 2")
+
+        t1.save()
+        t2.save()
+
+        self.assertNotEqual(t1.__hash__(), t2.__hash__())
+
     def test_adding_task_with_priority(self):
         t = Task(self.tw, description="test task", priority="M")
         t.save()
@@ -580,7 +709,7 @@ class TaskTest(TasklibTest):
         self.assertEqual(set(t._modified_fields), set())
 
         # Get the task by using a filter by UUID
-        t2 = self.tw.tasks.get(uuid=t['uuid'])
+        self.tw.tasks.get(uuid=t['uuid'])
 
         # Reassigning the fields with the same values now should not produce
         # modified fields
@@ -594,7 +723,7 @@ class TaskTest(TasklibTest):
         t = Task(self.tw)
 
         for field in TASK_STANDARD_ATTRS:
-            value = t[field]
+            t[field]
 
         self.assertEqual(set(t._modified_fields), set())
 
@@ -620,16 +749,24 @@ class TaskTest(TasklibTest):
     def test_adding_tag_by_appending(self):
         t = Task(self.tw, description="test task", tags=['test1'])
         t.save()
-        t['tags'].append('test2')
+        t['tags'].add('test2')
         t.save()
-        self.assertEqual(t['tags'], ['test1', 'test2'])
+        self.assertEqual(t['tags'], set(['test1', 'test2']))
+
+    def test_adding_tag_twice(self):
+        t = Task(self.tw, description="test task", tags=['test1'])
+        t.save()
+        t['tags'].add('test2')
+        t['tags'].add('test2')
+        t.save()
+        self.assertEqual(t['tags'], set(['test1', 'test2']))
 
     def test_adding_tag_by_appending_empty(self):
         t = Task(self.tw, description="test task")
         t.save()
-        t['tags'].append('test')
+        t['tags'].add('test')
         t.save()
-        self.assertEqual(t['tags'], ['test'])
+        self.assertEqual(t['tags'], set(['test']))
 
     def test_serializers_returning_empty_string_for_none(self):
         # Test that any serializer returns '' when passed None
@@ -643,7 +780,7 @@ class TaskTest(TasklibTest):
         # Test that any deserializer returns empty value when passed ''
         t = Task(self.tw)
         deserializers = [getattr(t, deserializer_name) for deserializer_name in
-                        filter(lambda x: x.startswith('deserialize_'), dir(t))]
+                         filter(lambda x: x.startswith('deserialize_'), dir(t))]
         for deserializer in deserializers:
             self.assertTrue(deserializer('') in (None, [], set()))
 
@@ -661,15 +798,53 @@ class TaskTest(TasklibTest):
         t.save()
         self.assertEqual(len(self.tw.tasks.pending()), 2)
 
+    def test_spawned_task_parent(self):
+        today = datetime.date.today()
+        t = Task(self.tw, description="brush teeth",
+                 due=today, recur="daily")
+        t.save()
+
+        spawned = self.tw.tasks.pending().get(due=today)
+        assert spawned['parent'] == t
+
+    def test_modify_number_of_tasks_at_once(self):
+        for i in range(1, 100):
+            Task(self.tw, description="test task %d" % i, tags=['test']).save()
+
+        self.tw.execute_command(['+test', 'mod', 'unified', 'description'])
+
+    def test_return_all_from_executed_command(self):
+        Task(self.tw, description="test task", tags=['test']).save()
+        out, err, rc = self.tw.execute_command(['count'], return_all=True)
+        self.assertEqual(rc, 0)
+
+    def test_return_all_from_failed_executed_command(self):
+        Task(self.tw, description="test task", tags=['test']).save()
+        out, err, rc = self.tw.execute_command(['countinvalid'],
+                                               return_all=True,
+                                               allow_failure=False)
+        self.assertNotEqual(rc, 0)
+
+
 class TaskFromHookTest(TasklibTest):
 
     input_add_data = six.StringIO(
         '{"description":"Buy some milk",'
         '"entry":"20141118T050231Z",'
         '"status":"pending",'
+        '"start":"20141119T152233Z",'
         '"uuid":"a360fc44-315c-4366-b70c-ea7e7520b749"}')
 
-    input_modify_data = six.StringIO(input_add_data.getvalue() + '\n' +
+    input_add_data_recurring = six.StringIO(
+        '{"description":"Mow the lawn",'
+        '"entry":"20160210T224304Z",'
+        '"parent":"62da6227-519c-42c2-915d-dccada926ad7",'
+        '"recur":"weekly",'
+        '"status":"pending",'
+        '"uuid":"81305335-0237-49ff-8e87-b3cdc2369cec"}')
+
+    input_modify_data = six.StringIO(
+        input_add_data.getvalue() + '\n' +
         '{"description":"Buy some milk finally",'
         '"entry":"20141118T050231Z",'
         '"status":"completed",'
@@ -677,17 +852,23 @@ class TaskFromHookTest(TasklibTest):
 
     exported_raw_data = (
         '{"project":"Home",'
-         '"due":"20150101T232323Z",'
-         '"description":"test task"}')
+        '"due":"20150101T232323Z",'
+        '"description":"test task"}')
 
     def test_setting_up_from_add_hook_input(self):
-        t = Task.from_input(input_file=self.input_add_data, warrior=self.tw)
+        t = Task.from_input(input_file=self.input_add_data, backend=self.tw)
         self.assertEqual(t['description'], "Buy some milk")
         self.assertEqual(t.pending, True)
 
+    def test_setting_up_from_add_hook_input_recurring(self):
+        t = Task.from_input(input_file=self.input_add_data_recurring,
+                            backend=self.tw)
+        self.assertEqual(t['description'], "Mow the lawn")
+        self.assertEqual(t.pending, True)
+
     def test_setting_up_from_modified_hook_input(self):
         t = Task.from_input(input_file=self.input_modify_data, modify=True,
-                            warrior=self.tw)
+                            backend=self.tw)
         self.assertEqual(t['description'], "Buy some milk finally")
         self.assertEqual(t.pending, False)
         self.assertEqual(t.completed, True)
@@ -695,12 +876,13 @@ class TaskFromHookTest(TasklibTest):
         self.assertEqual(t._original_data['status'], "pending")
         self.assertEqual(t._original_data['description'], "Buy some milk")
         self.assertEqual(set(t._modified_fields),
-                         set(['status', 'description']))
+                         set(['status', 'description', 'start']))
 
     def test_export_data(self):
         t = Task(self.tw, description="test task",
-            project="Home",
-            due=pytz.utc.localize(datetime.datetime(2015,1,1,23,23,23)))
+                 project="Home",
+                 due=pytz.utc.localize(datetime.datetime(2015, 1, 1,
+                                                         23, 23, 23)))
 
         # Check that the output is a permutation of:
         # {"project":"Home","description":"test task","due":"20150101232323Z"}
@@ -713,13 +895,14 @@ class TaskFromHookTest(TasklibTest):
         self.assertTrue(any(t.export_data() == expected
                             for expected in allowed_output))
 
+
 class TimezoneAwareDatetimeTest(TasklibTest):
 
     def setUp(self):
         super(TimezoneAwareDatetimeTest, self).setUp()
         self.zone = local_zone
-        self.localdate_naive = datetime.datetime(2015,2,2)
-        self.localtime_naive = datetime.datetime(2015,2,2,0,0,0)
+        self.localdate_naive = datetime.datetime(2015, 2, 2)
+        self.localtime_naive = datetime.datetime(2015, 2, 2, 0, 0, 0)
         self.localtime_aware = self.zone.localize(self.localtime_naive)
         self.utctime_aware = self.localtime_aware.astimezone(pytz.utc)
 
@@ -783,6 +966,7 @@ class TimezoneAwareDatetimeTest(TasklibTest):
         self.assertEqual(json.loads(t.export_data())['due'],
                          self.utctime_aware.strftime(DATE_FORMAT))
 
+
 class DatetimeStringTest(TasklibTest):
 
     def test_simple_now_conversion(self):
@@ -798,8 +982,12 @@ class DatetimeStringTest(TasklibTest):
         now = local_zone.localize(datetime.datetime.now())
 
         # Assert that both times are not more than 5 seconds apart
-        self.assertTrue((now - t['due']).total_seconds() < 5)
-        self.assertTrue((t['due'] - now).total_seconds() < 5)
+        if sys.version_info < (2, 7):
+            self.assertTrue(total_seconds_2_6(now - t['due']) < 5)
+            self.assertTrue(total_seconds_2_6(t['due'] - now) < 5)
+        else:
+            self.assertTrue((now - t['due']).total_seconds() < 5)
+            self.assertTrue((t['due'] - now).total_seconds() < 5)
 
     def test_simple_eoy_conversion(self):
         if self.tw.version < six.text_type('2.4.0'):
@@ -835,20 +1023,29 @@ class DatetimeStringTest(TasklibTest):
         now = local_zone.localize(datetime.datetime.now())
         due_date = local_zone.localize(datetime.datetime(
             year=now.year,
-            month=9,
-            day=3,
-            hour=0,
+            month=12,
+            day=31,
+            hour=23,
             minute=59,
             second=59
-            ))
+            )) - datetime.timedelta(0, 4 * 30 * 86400)
         self.assertEqual(due_date, t['due'])
 
     def test_filtering_with_string_datetime(self):
+        if self.tw.version < six.text_type('2.4.0'):
+            # Python2.6 does not support SkipTest. As a workaround
+            # mark the test as passed by exiting.
+            if getattr(unittest, 'SkipTest', None) is not None:
+                raise unittest.SkipTest()
+            else:
+                return
+
         t = Task(self.tw, description="test task",
-                 due=datetime.datetime.now() - datetime.timedelta(0,2))
+                 due=datetime.datetime.now() - datetime.timedelta(0, 2))
         t.save()
         self.assertEqual(len(self.tw.tasks.filter(due__before="now")), 1)
 
+
 class AnnotationTest(TasklibTest):
 
     def setUp(self):
@@ -883,12 +1080,12 @@ class AnnotationTest(TasklibTest):
         self.assertEqual(len(task['annotations']), 0)
 
     def test_annotation_after_modification(self):
-         task = self.tw.tasks.get()
-         task['project'] = 'test'
-         task.add_annotation('I should really do this task')
-         self.assertEqual(task['project'], 'test')
-         task.save()
-         self.assertEqual(task['project'], 'test')
+        task = self.tw.tasks.get()
+        task['project'] = 'test'
+        task.add_annotation('I should really do this task')
+        self.assertEqual(task['project'], 'test')
+        task.save()
+        self.assertEqual(task['project'], 'test')
 
     def test_serialize_annotations(self):
         # Test that serializing annotations is possible
@@ -911,47 +1108,55 @@ class AnnotationTest(TasklibTest):
 class UnicodeTest(TasklibTest):
 
     def test_unicode_task(self):
-        Task(self.tw, description="†åßk").save()
+        Task(self.tw, description=six.u("†åßk")).save()
         self.tw.tasks.get()
 
+    def test_filter_by_unicode_task(self):
+        Task(self.tw, description=six.u("†åßk")).save()
+        tasks = self.tw.tasks.filter(description=six.u("†åßk"))
+        self.assertEqual(len(tasks), 1)
+
     def test_non_unicode_task(self):
         Task(self.tw, description="test task").save()
         self.tw.tasks.get()
 
+
 class ReadOnlyDictViewTest(unittest.TestCase):
 
     def setUp(self):
-        self.sample = dict(l=[1,2,3], d={'k':'v'})
+        self.sample = dict(sample_list=[1, 2, 3], sample_dict={'key': 'value'})
         self.original_sample = copy.deepcopy(self.sample)
         self.view = ReadOnlyDictView(self.sample)
 
     def test_readonlydictview_getitem(self):
-        l = self.view['l']
-        self.assertEqual(l, self.sample['l'])
+        sample_list = self.view['sample_list']
+        self.assertEqual(sample_list, self.sample['sample_list'])
 
         # Assert that modification changed only copied value
-        l.append(4)
-        self.assertNotEqual(l, self.sample['l'])
+        sample_list.append(4)
+        self.assertNotEqual(sample_list, self.sample['sample_list'])
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
     def test_readonlydictview_contains(self):
-        self.assertEqual('l' in self.view, 'l' in self.sample)
-        self.assertEqual('d' in self.view, 'd' in self.sample)
-        self.assertEqual('k' in self.view, 'k' in self.sample)
+        self.assertEqual('sample_list' in self.view,
+                         'sample_list' in self.sample)
+        self.assertEqual('sample_dict' in self.view,
+                         'sample_dict' in self.sample)
+        self.assertEqual('key' in self.view, 'key' in self.sample)
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
 
     def test_readonlydictview_iter(self):
-        self.assertEqual(list(k for k in self.view),
-                         list(k for k in self.sample))
+        self.assertEqual(list(key for key in self.view),
+                         list(key for key in self.sample))
 
         # Assert the view is correct after modification
         self.sample['new'] = 'value'
-        self.assertEqual(list(k for k in self.view),
-                         list(k for k in self.sample))
+        self.assertEqual(list(key for key in self.view),
+                         list(key for key in self.sample))
 
     def test_readonlydictview_len(self):
         self.assertEqual(len(self.view), len(self.sample))
@@ -961,12 +1166,12 @@ class ReadOnlyDictViewTest(unittest.TestCase):
         self.assertEqual(len(self.view), len(self.sample))
 
     def test_readonlydictview_get(self):
-        l = self.view.get('l')
-        self.assertEqual(l, self.sample.get('l'))
+        sample_list = self.view.get('sample_list')
+        self.assertEqual(sample_list, self.sample.get('sample_list'))
 
         # Assert that modification changed only copied value
-        l.append(4)
-        self.assertNotEqual(l, self.sample.get('l'))
+        sample_list.append(4)
+        self.assertNotEqual(sample_list, self.sample.get('sample_list'))
 
         # Assert that viewed dict is not changed
         self.assertEqual(self.sample, self.original_sample)
@@ -990,3 +1195,200 @@ class ReadOnlyDictViewTest(unittest.TestCase):
         view_list_item.append(4)
         self.assertNotEqual(view_values, sample_values)
         self.assertEqual(self.sample, self.original_sample)
+
+
+class LazyUUIDTaskTest(TasklibTest):
+
+    def setUp(self):
+        super(LazyUUIDTaskTest, self).setUp()
+
+        self.stored = Task(self.tw, description="this is test task")
+        self.stored.save()
+
+        self.lazy = LazyUUIDTask(self.tw, self.stored['uuid'])
+
+    def test_uuid_non_conversion(self):
+        assert self.stored['uuid'] == self.lazy['uuid']
+        assert type(self.lazy) is LazyUUIDTask
+
+    def test_lazy_explicit_conversion(self):
+        assert type(self.lazy) is LazyUUIDTask
+        self.lazy.replace()
+        assert type(self.lazy) is Task
+
+    def test_conversion_key(self):
+        assert self.stored['description'] == self.lazy['description']
+        assert type(self.lazy) is Task
+
+    def test_conversion_attribute(self):
+        assert type(self.lazy) is LazyUUIDTask
+        assert self.lazy.completed is False
+        assert type(self.lazy) is Task
+
+    def test_normal_to_lazy_equality(self):
+        assert self.stored == self.lazy
+        assert not self.stored != self.lazy
+        assert type(self.lazy) is LazyUUIDTask
+
+    def test_lazy_to_lazy_equality(self):
+        lazy1 = LazyUUIDTask(self.tw, self.stored['uuid'])
+        lazy2 = LazyUUIDTask(self.tw, self.stored['uuid'])
+
+        assert lazy1 == lazy2
+        assert not lazy1 != lazy2
+        assert type(lazy1) is LazyUUIDTask
+        assert type(lazy2) is LazyUUIDTask
+
+    def test_normal_to_lazy_inequality(self):
+        # Create a different UUID by changing the last letter
+        wrong_uuid = self.stored['uuid']
+        wrong_uuid = wrong_uuid[:-1] + ('a' if wrong_uuid[-1] != 'a' else 'b')
+
+        wrong_lazy = LazyUUIDTask(self.tw, wrong_uuid)
+
+        assert not self.stored == wrong_lazy
+        assert self.stored != wrong_lazy
+        assert type(wrong_lazy) is LazyUUIDTask
+
+    def test_lazy_to_lazy_inequality(self):
+        # Create a different UUID by changing the last letter
+        wrong_uuid = self.stored['uuid']
+        wrong_uuid = wrong_uuid[:-1] + ('a' if wrong_uuid[-1] != 'a' else 'b')
+
+        lazy1 = LazyUUIDTask(self.tw, self.stored['uuid'])
+        lazy2 = LazyUUIDTask(self.tw, wrong_uuid)
+
+        assert not lazy1 == lazy2
+        assert lazy1 != lazy2
+        assert type(lazy1) is LazyUUIDTask
+        assert type(lazy2) is LazyUUIDTask
+
+    def test_lazy_in_queryset(self):
+        tasks = self.tw.tasks.filter(uuid=self.stored['uuid'])
+
+        assert self.lazy in tasks
+        assert type(self.lazy) is LazyUUIDTask
+
+    def test_lazy_saved(self):
+        assert self.lazy.saved is True
+
+    def test_lazy_modified(self):
+        assert self.lazy.modified is False
+
+    def test_lazy_modified_fields(self):
+        assert self.lazy._modified_fields == set()
+
+
+class LazyUUIDTaskSetTest(TasklibTest):
+
+    def setUp(self):
+        super(LazyUUIDTaskSetTest, self).setUp()
+
+        self.task1 = Task(self.tw, description="task 1")
+        self.task2 = Task(self.tw, description="task 2")
+        self.task3 = Task(self.tw, description="task 3")
+
+        self.task1.save()
+        self.task2.save()
+        self.task3.save()
+
+        self.uuids = (
+            self.task1['uuid'],
+            self.task2['uuid'],
+            self.task3['uuid']
+        )
+
+        self.lazy = LazyUUIDTaskSet(self.tw, self.uuids)
+
+    def test_length(self):
+        assert len(self.lazy) == 3
+        assert type(self.lazy) is LazyUUIDTaskSet
+
+    def test_contains(self):
+        assert self.task1 in self.lazy
+        assert self.task2 in self.lazy
+        assert self.task3 in self.lazy
+        assert type(self.lazy) is LazyUUIDTaskSet
+
+    def test_eq_lazy(self):
+        new_lazy = LazyUUIDTaskSet(self.tw, self.uuids)
+        assert self.lazy == new_lazy
+        assert not self.lazy != new_lazy
+        assert type(self.lazy) is LazyUUIDTaskSet
+
+    def test_eq_real(self):
+        assert self.lazy == self.tw.tasks.all()
+        assert self.tw.tasks.all() == self.lazy
+        assert not self.lazy != self.tw.tasks.all()
+
+        assert type(self.lazy) is LazyUUIDTaskSet
+
+    def test_union(self):
+        taskset = set([self.task1])
+        lazyset = LazyUUIDTaskSet(
+            self.tw,
+            (self.task2['uuid'], self.task3['uuid'])
+        )
+
+        assert taskset | lazyset == self.lazy
+        assert lazyset | taskset == self.lazy
+        assert taskset.union(lazyset) == self.lazy
+        assert lazyset.union(taskset) == self.lazy
+
+        lazyset |= taskset
+        assert lazyset == self.lazy
+
+    def test_difference(self):
+        taskset = set([self.task1, self.task2])
+        lazyset = LazyUUIDTaskSet(
+            self.tw,
+            (self.task2['uuid'], self.task3['uuid'])
+        )
+
+        assert taskset - lazyset == set([self.task1])
+        assert lazyset - taskset == set([self.task3])
+        assert taskset.difference(lazyset) == set([self.task1])
+        assert lazyset.difference(taskset) == set([self.task3])
+
+        lazyset -= taskset
+        assert lazyset == set([self.task3])
+
+    def test_symmetric_difference(self):
+        taskset = set([self.task1, self.task2])
+        lazyset = LazyUUIDTaskSet(
+            self.tw,
+            (self.task2['uuid'], self.task3['uuid'])
+        )
+
+        assert taskset ^ lazyset == set([self.task1, self.task3])
+        assert lazyset ^ taskset == set([self.task1, self.task3])
+        assert taskset.symmetric_difference(lazyset) == set([self.task1,
+                                                             self.task3])
+        assert lazyset.symmetric_difference(taskset) == set([self.task1,
+                                                             self.task3])
+
+        lazyset ^= taskset
+        assert lazyset == set([self.task1, self.task3])
+
+    def test_intersection(self):
+        taskset = set([self.task1, self.task2])
+        lazyset = LazyUUIDTaskSet(
+            self.tw,
+            (self.task2['uuid'], self.task3['uuid'])
+        )
+
+        assert taskset & lazyset == set([self.task2])
+        assert lazyset & taskset == set([self.task2])
+        assert taskset.intersection(lazyset) == set([self.task2])
+        assert lazyset.intersection(taskset) == set([self.task2])
+
+        lazyset &= taskset
+        assert lazyset == set([self.task2])
+
+
+class TaskWarriorBackendTest(TasklibTest):
+
+    def test_config(self):
+        assert self.tw.config['nag'] == "You have more urgent tasks."
+        assert self.tw.config['default.command'] == "next"
+        assert self.tw.config['dependency.indicator'] == "D"