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Reorganized backends tests. 

This reduces the number of explicit vendor checks.
This commit is contained in:
Aymeric Augustin 2014-05-07 21:40:02 +02:00
parent b1432bfc22
commit d667263169
1 changed files with 147 additions and 200 deletions
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347
tests/backends/tests.py
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@ -31,6 +31,7 @@ from . import models
class DummyBackendTest(TestCase):
def test_no_databases(self):
"""
Test that empty DATABASES setting default to the dummy backend.
@ -41,18 +42,15 @@ class DummyBackendTest(TestCase):
'django.db.backends.dummy')
class OracleChecks(unittest.TestCase):
@unittest.skipUnless(connection.vendor == 'oracle', "Test only for Oracle")
class OracleTests(unittest.TestCase):
@unittest.skipUnless(connection.vendor == 'oracle',
"No need to check Oracle quote_name semantics")
def test_quote_name(self):
# Check that '%' chars are escaped for query execution.
name = '"SOME%NAME"'
quoted_name = connection.ops.quote_name(name)
self.assertEqual(quoted_name % (), name)
@unittest.skipUnless(connection.vendor == 'oracle',
"No need to check Oracle cursor semantics")
def test_dbms_session(self):
# If the backend is Oracle, test that we can call a standard
# stored procedure through our cursor wrapper.
@ -62,8 +60,6 @@ class OracleChecks(unittest.TestCase):
cursor.callproc(convert_unicode('DBMS_SESSION.SET_IDENTIFIER'),
[convert_unicode('_django_testing!')])
@unittest.skipUnless(connection.vendor == 'oracle',
"No need to check Oracle cursor semantics")
def test_cursor_var(self):
# If the backend is Oracle, test that we can pass cursor variables
# as query parameters.
@ -74,8 +70,6 @@ class OracleChecks(unittest.TestCase):
cursor.execute("BEGIN %s := 'X'; END; ", [var])
self.assertEqual(var.getvalue(), 'X')
@unittest.skipUnless(connection.vendor == 'oracle',
"No need to check Oracle cursor semantics")
def test_long_string(self):
# If the backend is Oracle, test that we can save a text longer
# than 4000 chars and read it properly
@ -88,8 +82,6 @@ class OracleChecks(unittest.TestCase):
self.assertEqual(long_str, row[0].read())
cursor.execute('DROP TABLE ltext')
@unittest.skipUnless(connection.vendor == 'oracle',
"No need to check Oracle connection semantics")
def test_client_encoding(self):
# If the backend is Oracle, test that the client encoding is set
# correctly. This was broken under Cygwin prior to r14781.
@ -97,8 +89,6 @@ class OracleChecks(unittest.TestCase):
self.assertEqual(connection.connection.encoding, "UTF-8")
self.assertEqual(connection.connection.nencoding, "UTF-8")
@unittest.skipUnless(connection.vendor == 'oracle',
"No need to check Oracle connection semantics")
def test_order_of_nls_parameters(self):
# an 'almost right' datetime should work with configured
# NLS parameters as per #18465.
@ -110,11 +100,11 @@ class OracleChecks(unittest.TestCase):
self.assertEqual(cursor.fetchone()[0], 1)
@unittest.skipUnless(connection.vendor == 'sqlite', "Test only for SQLite")
class SQLiteTests(TestCase):
longMessage = True
@unittest.skipUnless(connection.vendor == 'sqlite',
"Test valid only for SQLite")
def test_autoincrement(self):
"""
Check that auto_increment fields are created with the AUTOINCREMENT
@ -128,10 +118,148 @@ class SQLiteTests(TestCase):
match.group(1), "Wrong SQL used to create an auto-increment "
"column on SQLite")
def test_aggregation(self):
"""
#19360: Raise NotImplementedError when aggregating on date/time fields.
"""
for aggregate in (Sum, Avg, Variance, StdDev):
self.assertRaises(NotImplementedError,
models.Item.objects.all().aggregate, aggregate('time'))
self.assertRaises(NotImplementedError,
models.Item.objects.all().aggregate, aggregate('date'))
self.assertRaises(NotImplementedError,
models.Item.objects.all().aggregate, aggregate('last_modified'))
def test_convert_values_to_handle_null_value(self):
from django.db.backends.sqlite3.base import DatabaseOperations
convert_values = DatabaseOperations(connection).convert_values
self.assertIsNone(convert_values(None, AutoField(primary_key=True)))
self.assertIsNone(convert_values(None, DateField()))
self.assertIsNone(convert_values(None, DateTimeField()))
self.assertIsNone(convert_values(None, DecimalField()))
self.assertIsNone(convert_values(None, IntegerField()))
self.assertIsNone(convert_values(None, TimeField()))
@unittest.skipUnless(connection.vendor == 'postgresql', "Test only for PostgreSQL")
class PostgreSQLTests(TestCase):
def assert_parses(self, version_string, version):
self.assertEqual(pg_version._parse_version(version_string), version)
def test_parsing(self):
"""Test PostgreSQL version parsing from `SELECT version()` output"""
self.assert_parses("PostgreSQL 8.3 beta4", 80300)
self.assert_parses("PostgreSQL 8.3", 80300)
self.assert_parses("EnterpriseDB 8.3", 80300)
self.assert_parses("PostgreSQL 8.3.6", 80306)
self.assert_parses("PostgreSQL 8.4beta1", 80400)
self.assert_parses("PostgreSQL 8.3.1 on i386-apple-darwin9.2.2, compiled by GCC i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5478)", 80301)
def test_version_detection(self):
"""Test PostgreSQL version detection"""
# Helper mocks
class CursorMock(object):
"Very simple mock of DB-API cursor"
def execute(self, arg):
pass
def fetchone(self):
return ["PostgreSQL 8.3"]
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
pass
class OlderConnectionMock(object):
"Mock of psycopg2 (< 2.0.12) connection"
def cursor(self):
return CursorMock()
# psycopg2 < 2.0.12 code path
conn = OlderConnectionMock()
self.assertEqual(pg_version.get_version(conn), 80300)
def test_connect_and_rollback(self):
"""
PostgreSQL shouldn't roll back SET TIME ZONE, even if the first
transaction is rolled back (#17062).
"""
databases = copy.deepcopy(settings.DATABASES)
new_connections = ConnectionHandler(databases)
new_connection = new_connections[DEFAULT_DB_ALIAS]
try:
# Ensure the database default time zone is different than
# the time zone in new_connection.settings_dict. We can
# get the default time zone by reset & show.
cursor = new_connection.cursor()
cursor.execute("RESET TIMEZONE")
cursor.execute("SHOW TIMEZONE")
db_default_tz = cursor.fetchone()[0]
new_tz = 'Europe/Paris' if db_default_tz == 'UTC' else 'UTC'
new_connection.close()
# Fetch a new connection with the new_tz as default
# time zone, run a query and rollback.
new_connection.settings_dict['TIME_ZONE'] = new_tz
new_connection.set_autocommit(False)
cursor = new_connection.cursor()
new_connection.rollback()
# Now let's see if the rollback rolled back the SET TIME ZONE.
cursor.execute("SHOW TIMEZONE")
tz = cursor.fetchone()[0]
self.assertEqual(new_tz, tz)
finally:
new_connection.close()
def test_connect_non_autocommit(self):
"""
The connection wrapper shouldn't believe that autocommit is enabled
after setting the time zone when AUTOCOMMIT is False (#21452).
"""
databases = copy.deepcopy(settings.DATABASES)
databases[DEFAULT_DB_ALIAS]['AUTOCOMMIT'] = False
new_connections = ConnectionHandler(databases)
new_connection = new_connections[DEFAULT_DB_ALIAS]
try:
# Open a database connection.
new_connection.cursor()
self.assertFalse(new_connection.get_autocommit())
finally:
new_connection.close()
def _select(self, val):
with connection.cursor() as cursor:
cursor.execute("SELECT %s", (val,))
return cursor.fetchone()[0]
def test_select_ascii_array(self):
a = ["awef"]
b = self._select(a)
self.assertEqual(a[0], b[0])
def test_select_unicode_array(self):
a = ["ᄲawef"]
b = self._select(a)
self.assertEqual(a[0], b[0])
def test_lookup_cast(self):
from django.db.backends.postgresql_psycopg2.operations import DatabaseOperations
do = DatabaseOperations(connection=None)
for lookup in ('iexact', 'contains', 'icontains', 'startswith',
'istartswith', 'endswith', 'iendswith', 'regex', 'iregex'):
self.assertIn('::text', do.lookup_cast(lookup))
@unittest.skipUnless(connection.vendor == 'mysql', "Test only for MySQL")
class MySQLTests(TestCase):
@unittest.skipUnless(connection.vendor == 'mysql',
"Test valid only for MySQL")
def test_autoincrement(self):
"""
Check that auto_increment fields are reset correctly by sql_flush().
@ -225,6 +353,7 @@ class LastExecutedQueryTest(TestCase):
class ParameterHandlingTest(TestCase):
def test_bad_parameter_count(self):
"An executemany call with too many/not enough parameters will raise an exception (Refs #12612)"
cursor = connection.cursor()
@ -285,6 +414,7 @@ class LongNameTest(TestCase):
class SequenceResetTest(TestCase):
def test_generic_relation(self):
"Sequence names are correct when resetting generic relations (Ref #13941)"
# Create an object with a manually specified PK
@ -302,105 +432,6 @@ class SequenceResetTest(TestCase):
self.assertTrue(obj.pk > 10)
class PostgresVersionTest(TestCase):
def assert_parses(self, version_string, version):
self.assertEqual(pg_version._parse_version(version_string), version)
def test_parsing(self):
"""Test PostgreSQL version parsing from `SELECT version()` output"""
self.assert_parses("PostgreSQL 8.3 beta4", 80300)
self.assert_parses("PostgreSQL 8.3", 80300)
self.assert_parses("EnterpriseDB 8.3", 80300)
self.assert_parses("PostgreSQL 8.3.6", 80306)
self.assert_parses("PostgreSQL 8.4beta1", 80400)
self.assert_parses("PostgreSQL 8.3.1 on i386-apple-darwin9.2.2, compiled by GCC i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5478)", 80301)
def test_version_detection(self):
"""Test PostgreSQL version detection"""
# Helper mocks
class CursorMock(object):
"Very simple mock of DB-API cursor"
def execute(self, arg):
pass
def fetchone(self):
return ["PostgreSQL 8.3"]
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
pass
class OlderConnectionMock(object):
"Mock of psycopg2 (< 2.0.12) connection"
def cursor(self):
return CursorMock()
# psycopg2 < 2.0.12 code path
conn = OlderConnectionMock()
self.assertEqual(pg_version.get_version(conn), 80300)
class PostgresNewConnectionTests(TestCase):
@unittest.skipUnless(
connection.vendor == 'postgresql',
"This test applies only to PostgreSQL")
def test_connect_and_rollback(self):
"""
PostgreSQL shouldn't roll back SET TIME ZONE, even if the first
transaction is rolled back (#17062).
"""
databases = copy.deepcopy(settings.DATABASES)
new_connections = ConnectionHandler(databases)
new_connection = new_connections[DEFAULT_DB_ALIAS]
try:
# Ensure the database default time zone is different than
# the time zone in new_connection.settings_dict. We can
# get the default time zone by reset & show.
cursor = new_connection.cursor()
cursor.execute("RESET TIMEZONE")
cursor.execute("SHOW TIMEZONE")
db_default_tz = cursor.fetchone()[0]
new_tz = 'Europe/Paris' if db_default_tz == 'UTC' else 'UTC'
new_connection.close()
# Fetch a new connection with the new_tz as default
# time zone, run a query and rollback.
new_connection.settings_dict['TIME_ZONE'] = new_tz
new_connection.set_autocommit(False)
cursor = new_connection.cursor()
new_connection.rollback()
# Now let's see if the rollback rolled back the SET TIME ZONE.
cursor.execute("SHOW TIMEZONE")
tz = cursor.fetchone()[0]
self.assertEqual(new_tz, tz)
finally:
new_connection.close()
@unittest.skipUnless(
connection.vendor == 'postgresql',
"This test applies only to PostgreSQL")
def test_connect_non_autocommit(self):
"""
The connection wrapper shouldn't believe that autocommit is enabled
after setting the time zone when AUTOCOMMIT is False (#21452).
"""
databases = copy.deepcopy(settings.DATABASES)
databases[DEFAULT_DB_ALIAS]['AUTOCOMMIT'] = False
new_connections = ConnectionHandler(databases)
new_connection = new_connections[DEFAULT_DB_ALIAS]
try:
# Open a database connection.
new_connection.cursor()
self.assertFalse(new_connection.get_autocommit())
finally:
new_connection.close()
# This test needs to run outside of a transaction, otherwise closing the
# connection would implicitly rollback and cause problems during teardown.
class ConnectionCreatedSignalTest(TransactionTestCase):
@ -463,56 +494,6 @@ class EscapingChecksDebug(EscapingChecks):
pass
class SqliteAggregationTests(TestCase):
"""
#19360: Raise NotImplementedError when aggregating on date/time fields.
"""
@unittest.skipUnless(connection.vendor == 'sqlite',
"No need to check SQLite aggregation semantics")
def test_aggregation(self):
for aggregate in (Sum, Avg, Variance, StdDev):
self.assertRaises(NotImplementedError,
models.Item.objects.all().aggregate, aggregate('time'))
self.assertRaises(NotImplementedError,
models.Item.objects.all().aggregate, aggregate('date'))
self.assertRaises(NotImplementedError,
models.Item.objects.all().aggregate, aggregate('last_modified'))
class SqliteChecks(TestCase):
@unittest.skipUnless(connection.vendor == 'sqlite',
"No need to do SQLite checks")
def test_convert_values_to_handle_null_value(self):
from django.db.backends.sqlite3.base import DatabaseOperations
database_operations = DatabaseOperations(connection)
self.assertEqual(
None,
database_operations.convert_values(None, AutoField(primary_key=True))
)
self.assertEqual(
None,
database_operations.convert_values(None, DateField())
)
self.assertEqual(
None,
database_operations.convert_values(None, DateTimeField())
)
self.assertEqual(
None,
database_operations.convert_values(None, DecimalField())
)
self.assertEqual(
None,
database_operations.convert_values(None, IntegerField())
)
self.assertEqual(
None,
database_operations.convert_values(None, TimeField())
)
class BackendTestCase(TestCase):
def create_squares_with_executemany(self, args):
@ -1037,37 +1018,3 @@ class BackendUtilTests(TestCase):
'0.1')
equal('0.1234567890', 12, 0,
'0')
@unittest.skipUnless(
connection.vendor == 'postgresql',
"This test applies only to PostgreSQL")
class UnicodeArrayTestCase(TestCase):
def select(self, val):
cursor = connection.cursor()
cursor.execute("select %s", (val,))
return cursor.fetchone()[0]
def test_select_ascii_array(self):
a = ["awef"]
b = self.select(a)
self.assertEqual(a[0], b[0])
def test_select_unicode_array(self):
a = ["ᄲawef"]
b = self.select(a)
self.assertEqual(a[0], b[0])
@unittest.skipUnless(
connection.vendor == 'postgresql',
"This test applies only to PostgreSQL")
class PostgresLookupCastTests(TestCase):
def test_lookup_cast(self):
from django.db.backends.postgresql_psycopg2.operations import DatabaseOperations
do = DatabaseOperations(connection=None)
for lookup in ('iexact', 'contains', 'icontains', 'startswith',
'istartswith', 'endswith', 'iendswith', 'regex', 'iregex'):
self.assertIn('::text', do.lookup_cast(lookup))