def test_moved_object(self):
obj_a = EventPageSpeaker(
first_name="Father",
last_name="Christmas",
sort_order=1,
)
obj_b = EventPageSpeaker(
first_name="Father",
last_name="Christmas",
sort_order=5,
)
comparison = self.comparison_class(
EventPageSpeaker,
[
partial(self.field_comparison_class, EventPageSpeaker._meta.get_field('first_name')),
partial(self.field_comparison_class, EventPageSpeaker._meta.get_field('last_name')),
],
obj_a,
obj_b,
)
self.assertFalse(comparison.is_addition())
self.assertFalse(comparison.is_deletion())
self.assertFalse(comparison.has_changed())
self.assertEqual(comparison.get_position_change(), 4)
self.assertEqual(comparison.get_num_differences(), 0)
def test_different_object(self):
obj_a = EventPageSpeaker(
first_name="Father",
last_name="Christmas",
)
obj_b = EventPageSpeaker(
first_name="Santa",
last_name="Claus",
)
comparison = self.comparison_class(
EventPageSpeaker,
[
curry(self.field_comparison_class,
EventPageSpeaker._meta.get_field('first_name')),
curry(self.field_comparison_class,
EventPageSpeaker._meta.get_field('last_name')),
],
obj_a,
obj_b,
)
self.assertFalse(comparison.is_addition())
self.assertFalse(comparison.is_deletion())
self.assertTrue(comparison.has_changed())
self.assertEqual(comparison.get_position_change(), 0)
self.assertEqual(comparison.get_num_differences(), 2)
def test_has_changed_with_same_id(self):
# Father Christmas renamed to Santa Claus, but this time the ID of the
# child object remained the same. It should now be detected as the same
# object
event_page = EventPage(title="Event page", slug="event")
event_page.speakers.add(
EventPageSpeaker(
id=1,
first_name="Father",
last_name="Christmas",
sort_order=0,
))
modified_event_page = EventPage(title="Event page", slug="event")
modified_event_page.speakers.add(
EventPageSpeaker(
id=1,
first_name="Santa",
last_name="Claus",
sort_order=0,
))
modified_event_page.speakers.add(
EventPageSpeaker(
first_name="Father",
last_name="Ted",
sort_order=1,
))
comparison = self.comparison_class(
EventPage._meta.get_field('speaker'),
[
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('first_name')),
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('last_name')),
],
event_page,
modified_event_page,
)
self.assertFalse(comparison.is_field)
self.assertTrue(comparison.is_child_relation)
self.assertEqual(comparison.field_label(), "Speaker")
self.assertTrue(comparison.has_changed())
# Check mapping
objs_a = list(comparison.val_a.all())
objs_b = list(comparison.val_b.all())
map_forwards, map_backwards, added, deleted = comparison.get_mapping(
objs_a, objs_b)
self.assertEqual(map_forwards,
{0: 0}) # Map Father Christmas to Santa Claus
self.assertEqual(map_backwards,
{0: 0}) # Map Santa Claus to Father Christmas
self.assertEqual(added, [1]) # Add Father Ted
self.assertEqual(deleted, [])
def test_has_changed(self):
# Father Christmas renamed to Santa Claus. And Father Ted added.
# Father Christmas should be mapped to Father Ted because they
# are most alike. Santa claus should be displayed as "new"
event_page = EventPage(title="Event page", slug="event")
event_page.speakers.add(
EventPageSpeaker(
first_name="Father",
last_name="Christmas",
sort_order=0,
))
modified_event_page = EventPage(title="Event page", slug="event")
modified_event_page.speakers.add(
EventPageSpeaker(
first_name="Santa",
last_name="Claus",
sort_order=0,
))
modified_event_page.speakers.add(
EventPageSpeaker(
first_name="Father",
last_name="Ted",
sort_order=1,
))
comparison = self.comparison_class(
EventPage._meta.get_field('speaker'),
[
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('first_name')),
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('last_name')),
],
event_page,
modified_event_page,
)
self.assertFalse(comparison.is_field)
self.assertTrue(comparison.is_child_relation)
self.assertEqual(comparison.field_label(), "Speaker")
self.assertTrue(comparison.has_changed())
# Check mapping
objs_a = list(comparison.val_a.all())
objs_b = list(comparison.val_b.all())
map_forwards, map_backwards, added, deleted = comparison.get_mapping(
objs_a, objs_b)
self.assertEqual(map_forwards,
{0: 1}) # Map Father Christmas to Father Ted
self.assertEqual(map_backwards,
{1: 0}) # Map Father Ted ot Father Christmas
self.assertEqual(added, [0]) # Add Santa Claus
self.assertEqual(deleted, [])
def test_hasnt_changed_with_different_id(self):
# Both of the child objects have the same field content but have a
# different ID so they should be detected as separate objects
event_page = EventPage(title="Event page", slug="event")
event_page.speakers.add(
EventPageSpeaker(
id=1,
first_name="Father",
last_name="Christmas",
))
modified_event_page = EventPage(title="Event page", slug="event")
modified_event_page.speakers.add(
EventPageSpeaker(
id=2,
first_name="Father",
last_name="Christmas",
))
comparison = self.comparison_class(
EventPage._meta.get_field('speaker'),
[
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('first_name')),
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('last_name')),
],
event_page,
modified_event_page,
)
self.assertFalse(comparison.is_field)
self.assertTrue(comparison.is_child_relation)
self.assertEqual(comparison.field_label(), "Speaker")
self.assertTrue(comparison.has_changed())
# Check mapping
objs_a = list(comparison.val_a.all())
objs_b = list(comparison.val_b.all())
map_forwards, map_backwards, added, deleted = comparison.get_mapping(
objs_a, objs_b)
self.assertEqual(map_forwards, {})
self.assertEqual(map_backwards, {})
self.assertEqual(added, [0]) # Add new Father Christmas
self.assertEqual(deleted, [0]) # Delete old Father Christmas
def test_hasnt_changed(self):
# Two event pages with speaker called "Father Christmas". Neither of
# the speaker objects have an ID so this tests that the code can match
# the two together by field content.
event_page = EventPage(title="Event page", slug="event")
event_page.speakers.add(
EventPageSpeaker(
first_name="Father",
last_name="Christmas",
))
modified_event_page = EventPage(title="Event page", slug="event")
modified_event_page.speakers.add(
EventPageSpeaker(
first_name="Father",
last_name="Christmas",
))
comparison = self.comparison_class(
EventPage._meta.get_field('speaker'),
[
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('first_name')),
partial(self.field_comparison_class,
EventPageSpeaker._meta.get_field('last_name')),
],
event_page,
modified_event_page,
)
self.assertFalse(comparison.is_field)
self.assertTrue(comparison.is_child_relation)
self.assertEqual(comparison.field_label(), "Speaker")
self.assertFalse(comparison.has_changed())
# Check mapping
objs_a = list(comparison.val_a.all())
objs_b = list(comparison.val_b.all())
map_forwards, map_backwards, added, deleted = comparison.get_mapping(
objs_a, objs_b)
self.assertEqual(map_forwards, {0: 0})
self.assertEqual(map_backwards, {0: 0})
self.assertEqual(added, [])
self.assertEqual(deleted, [])
def test_deletion(self):
obj = EventPageSpeaker(
first_name="Father",
last_name="Christmas",
)
comparison = self.comparison_class(
EventPageSpeaker,
[
partial(self.field_comparison_class, EventPageSpeaker._meta.get_field('first_name')),
partial(self.field_comparison_class, EventPageSpeaker._meta.get_field('last_name')),
],
obj,
None,
)
self.assertFalse(comparison.is_addition())
self.assertTrue(comparison.is_deletion())
self.assertFalse(comparison.has_changed())
self.assertIsNone(comparison.get_position_change())
self.assertEqual(comparison.get_num_differences(), 0)