def test_equality(self):
config = ExampleConfig(changed_by=self.user, string_field='first')
config.save()
self.assertTrue(
ExampleConfig.equal_to_current({"string_field": "first"}))
self.assertTrue(
ExampleConfig.equal_to_current({
"string_field": "first",
"enabled": False
}))
self.assertTrue(
ExampleConfig.equal_to_current({
"string_field": "first",
"int_field": 10
}))
self.assertFalse(
ExampleConfig.equal_to_current({
"string_field": "first",
"enabled": True
}))
self.assertFalse(
ExampleConfig.equal_to_current({
"string_field": "first",
"int_field": 20
}))
self.assertFalse(
ExampleConfig.equal_to_current({"string_field": "second"}))
self.assertFalse(ExampleConfig.equal_to_current({}))
def test_equality_custom_fields_to_ignore(self):
config = ExampleConfig(changed_by=self.user, string_field='first')
config.save()
# id, change_date, and changed_by will all be different for a newly created entry
self.assertTrue(
ExampleConfig.equal_to_current({"string_field": "first"}))
self.assertFalse(
ExampleConfig.equal_to_current({"string_field": "first"},
fields_to_ignore=("change_date",
"changed_by")))
self.assertFalse(
ExampleConfig.equal_to_current({"string_field": "first"},
fields_to_ignore=("id",
"changed_by")))
self.assertFalse(
ExampleConfig.equal_to_current({"string_field": "first"},
fields_to_ignore=("change_date",
"id")))
# Test the ability to ignore a different field ("int_field").
self.assertFalse(
ExampleConfig.equal_to_current({
"string_field": "first",
"int_field": 20
}))
self.assertTrue(
ExampleConfig.equal_to_current(
{
"string_field": "first",
"int_field": 20
},
fields_to_ignore=("id", "change_date", "changed_by",
"int_field")))
def test_always_insert(self):
config = ExampleConfig(changed_by=self.user, string_field='first')
config.save()
config.string_field = 'second'
config.save()
self.assertEqual(2, ExampleConfig.objects.all().count())
def test_config_ordering(self):
with freeze_time('2012-01-01'):
first = ExampleConfig(changed_by=self.user)
first.string_field = 'first'
first.save()
second = ExampleConfig(changed_by=self.user)
second.string_field = 'second'
second.save()
self.assertEqual(ExampleConfig.current().string_field, 'second')
def test_cache_set(self):
# Nothing is cached, so we take a database hit for this.
with self.assertNumQueries(1):
default = ExampleConfig.current()
self.assertEqual(default.string_field, '')
first = ExampleConfig(changed_by=self.user)
first.string_field = 'first'
first.save()
# The save() call above should have invalidated the cache, so we expect
# to see a query to get the current config value.
with self.assertNumQueries(1):
current = ExampleConfig.current()
self.assertEqual(current.string_field, 'first')