def test_compare_simple_instance_quirks(self):
# Ensure uuid,asc is added
ctx = instance_list.InstanceSortContext(['key0'], ['asc'])
self.assertEqual(['key0', 'uuid'], ctx.sort_keys)
self.assertEqual(['asc', 'asc'], ctx.sort_dirs)
# Ensure defaults are added
ctx = instance_list.InstanceSortContext(None, None)
self.assertEqual(['created_at', 'id', 'uuid'], ctx.sort_keys)
self.assertEqual(['desc', 'desc', 'asc'], ctx.sort_dirs)
def test_compare_multiple(self):
# key0 should not affect ordering, but key1 should
inst1 = {'key0': 'foo', 'key1': 'd', 'key2': 456}
inst2 = {'key0': 'foo', 'key1': 's', 'key2': 123}
# Should be equivalent to ascending by key1
ctx = instance_list.InstanceSortContext(['key0', 'key1'],
['asc', 'asc'])
self.assertEqual(-1, ctx.compare_instances(inst1, inst2))
# Should be equivalent to descending by key1
ctx = instance_list.InstanceSortContext(['key0', 'key1'],
['asc', 'desc'])
self.assertEqual(1, ctx.compare_instances(inst1, inst2))
def test_wrapper(self):
inst1 = {'key0': 'foo', 'key1': 'd', 'key2': 456}
inst2 = {'key0': 'foo', 'key1': 's', 'key2': 123}
# Should sort by key1
ctx = instance_list.InstanceSortContext(['key0', 'key1'],
['asc', 'asc'])
iw1 = instance_list.InstanceWrapper(ctx, inst1)
iw2 = instance_list.InstanceWrapper(ctx, inst2)
# Check this both ways to make sure we're comparing against -1
# and not just nonzero return from cmp()
self.assertTrue(iw1 < iw2)
self.assertFalse(iw2 < iw1)
# Should sort reverse by key1
ctx = instance_list.InstanceSortContext(['key0', 'key1'],
['asc', 'desc'])
iw1 = instance_list.InstanceWrapper(ctx, inst1)
iw2 = instance_list.InstanceWrapper(ctx, inst2)
# Check this both ways to make sure we're comparing against -1
# and not just nonzero return from cmp()
self.assertTrue(iw1 > iw2)
self.assertFalse(iw2 > iw1)
def test_compare_simple(self):
dt1 = datetime.datetime(2015, 11, 5, 20, 30, 00)
dt2 = datetime.datetime(1955, 10, 25, 1, 21, 00)
inst1 = {'key0': 'foo', 'key1': 'd', 'key2': 456, 'key4': dt1}
inst2 = {'key0': 'foo', 'key1': 's', 'key2': 123, 'key4': dt2}
# Equal key0, inst == inst2
ctx = instance_list.InstanceSortContext(['key0'], ['asc'])
self.assertEqual(0, ctx.compare_instances(inst1, inst2))
# Equal key0, inst == inst2 (direction should not matter)
ctx = instance_list.InstanceSortContext(['key0'], ['desc'])
self.assertEqual(0, ctx.compare_instances(inst1, inst2))
# Ascending by key1, inst1 < inst2
ctx = instance_list.InstanceSortContext(['key1'], ['asc'])
self.assertEqual(-1, ctx.compare_instances(inst1, inst2))
# Descending by key1, inst2 < inst1
ctx = instance_list.InstanceSortContext(['key1'], ['desc'])
self.assertEqual(1, ctx.compare_instances(inst1, inst2))
# Ascending by key2, inst2 < inst1
ctx = instance_list.InstanceSortContext(['key2'], ['asc'])
self.assertEqual(1, ctx.compare_instances(inst1, inst2))
# Descending by key2, inst1 < inst2
ctx = instance_list.InstanceSortContext(['key2'], ['desc'])
self.assertEqual(-1, ctx.compare_instances(inst1, inst2))
# Ascending by key4, inst1 > inst2
ctx = instance_list.InstanceSortContext(['key4'], ['asc'])
self.assertEqual(1, ctx.compare_instances(inst1, inst2))
# Descending by key4, inst1 < inst2
ctx = instance_list.InstanceSortContext(['key4'], ['desc'])
self.assertEqual(-1, ctx.compare_instances(inst1, inst2))
