# -*- encoding: utf-8 -*- from __future__ import unicode_literals import re from django.core.management import call_command from django.db import connection from django.test import TestCase, skipUnlessDBFeature from django.utils.unittest import expectedFailure from django.utils.six import PY3, StringIO if connection.vendor == 'oracle': expectedFailureOnOracle = expectedFailure else: expectedFailureOnOracle = lambda f: f class InspectDBTestCase(TestCase): def test_stealth_table_name_filter_option(self): out = StringIO() # Lets limit the introspection to tables created for models of this # application call_command('inspectdb', table_name_filter=lambda tn:tn.startswith('inspectdb_'), stdout=out) error_message = "inspectdb has examined a table that should have been filtered out." # contrib.contenttypes is one of the apps always installed when running # the Django test suite, check that one of its tables hasn't been # inspected self.assertNotIn("class DjangoContentType(models.Model):", out.getvalue(), msg=error_message) def make_field_type_asserter(self): """Call inspectdb and return a function to validate a field type in its output""" out = StringIO() call_command('inspectdb', table_name_filter=lambda tn: tn.startswith('inspectdb_columntypes'), stdout=out) output = out.getvalue() def assertFieldType(name, definition): out_def = re.search(r'^\s*%s = (models.*)$' % name, output, re.MULTILINE).groups()[0] self.assertEqual(definition, out_def) return assertFieldType # Inspecting oracle DB doesn't produce correct results, see #19884 @expectedFailureOnOracle def test_field_types(self): """Test introspection of various Django field types""" assertFieldType = self.make_field_type_asserter() assertFieldType('char_field', "models.CharField(max_length=10)") assertFieldType('comma_separated_int_field', "models.CharField(max_length=99)") assertFieldType('date_field', "models.DateField()") assertFieldType('date_time_field', "models.DateTimeField()") assertFieldType('email_field', "models.CharField(max_length=75)") assertFieldType('file_field', "models.CharField(max_length=100)") assertFieldType('file_path_field', "models.CharField(max_length=100)") if connection.vendor == 'postgresql': # Only PostgreSQL has a specific type assertFieldType('ip_address_field', "models.GenericIPAddressField()") assertFieldType('gen_ip_adress_field', "models.GenericIPAddressField()") else: assertFieldType('ip_address_field', "models.CharField(max_length=15)") assertFieldType('gen_ip_adress_field', "models.CharField(max_length=39)") assertFieldType('slug_field', "models.CharField(max_length=50)") assertFieldType('text_field', "models.TextField()") assertFieldType('time_field', "models.TimeField()") assertFieldType('url_field', "models.CharField(max_length=200)") def test_number_field_types(self): """Test introspection of various Django field types""" assertFieldType = self.make_field_type_asserter() assertFieldType('id', "models.IntegerField(primary_key=True)") assertFieldType('big_int_field', "models.BigIntegerField()") if connection.vendor == 'mysql': # No native boolean type on MySQL assertFieldType('bool_field', "models.IntegerField()") assertFieldType('null_bool_field', "models.IntegerField(blank=True, null=True)") else: assertFieldType('bool_field', "models.BooleanField()") assertFieldType('null_bool_field', "models.NullBooleanField()") if connection.vendor == 'sqlite': # Guessed arguments, see #5014 assertFieldType('decimal_field', "models.DecimalField(max_digits=10, decimal_places=5) " "# max_digits and decimal_places have been guessed, as this database handles decimal fields as float") else: assertFieldType('decimal_field', "models.DecimalField(max_digits=6, decimal_places=1)") assertFieldType('float_field', "models.FloatField()") assertFieldType('int_field', "models.IntegerField()") if connection.vendor == 'sqlite': assertFieldType('pos_int_field', "models.PositiveIntegerField()") assertFieldType('pos_small_int_field', "models.PositiveSmallIntegerField()") else: # 'unsigned' property undetected on other backends assertFieldType('pos_int_field', "models.IntegerField()") if connection.vendor == 'postgresql': assertFieldType('pos_small_int_field', "models.SmallIntegerField()") else: assertFieldType('pos_small_int_field', "models.IntegerField()") if connection.vendor in ('sqlite', 'postgresql'): assertFieldType('small_int_field', "models.SmallIntegerField()") else: assertFieldType('small_int_field', "models.IntegerField()") @skipUnlessDBFeature('can_introspect_foreign_keys') def test_attribute_name_not_python_keyword(self): out = StringIO() # Lets limit the introspection to tables created for models of this # application call_command('inspectdb', table_name_filter=lambda tn:tn.startswith('inspectdb_'), stdout=out) output = out.getvalue() error_message = "inspectdb generated an attribute name which is a python keyword" # Recursive foreign keys should be set to 'self' self.assertIn("parent = models.ForeignKey('self')", output) self.assertNotIn("from = models.ForeignKey(InspectdbPeople)", output, msg=error_message) # As InspectdbPeople model is defined after InspectdbMessage, it should be quoted self.assertIn("from_field = models.ForeignKey('InspectdbPeople', db_column='from_id')", output) self.assertIn("people_pk = models.ForeignKey(InspectdbPeople, primary_key=True)", output) self.assertIn("people_unique = models.ForeignKey(InspectdbPeople, unique=True)", output) def test_digits_column_name_introspection(self): """Introspection of column names consist/start with digits (#16536/#17676)""" out = StringIO() # Lets limit the introspection to tables created for models of this # application call_command('inspectdb', table_name_filter=lambda tn:tn.startswith('inspectdb_'), stdout=out) output = out.getvalue() error_message = "inspectdb generated a model field name which is a number" self.assertNotIn(" 123 = models.CharField", output, msg=error_message) self.assertIn("number_123 = models.CharField", output) error_message = "inspectdb generated a model field name which starts with a digit" self.assertNotIn(" 4extra = models.CharField", output, msg=error_message) self.assertIn("number_4extra = models.CharField", output) self.assertNotIn(" 45extra = models.CharField", output, msg=error_message) self.assertIn("number_45extra = models.CharField", output) def test_special_column_name_introspection(self): """ Introspection of column names containing special characters, unsuitable for Python identifiers """ out = StringIO() call_command('inspectdb', stdout=out) output = out.getvalue() base_name = 'Field' if connection.vendor != 'oracle' else 'field' self.assertIn("field = models.IntegerField()", output) self.assertIn("field_field = models.IntegerField(db_column='%s_')" % base_name, output) self.assertIn("field_field_0 = models.IntegerField(db_column='%s__')" % base_name, output) self.assertIn("field_field_1 = models.IntegerField(db_column='__field')", output) self.assertIn("prc_x = models.IntegerField(db_column='prc(%) x')", output) if PY3: # Python 3 allows non-ascii identifiers self.assertIn("tamaño = models.IntegerField()", output) else: self.assertIn("tama_o = models.IntegerField(db_column='tama\\xf1o')", output) def test_managed_models(self): """Test that by default the command generates models with `Meta.managed = False` (#14305)""" out = StringIO() call_command('inspectdb', table_name_filter=lambda tn:tn.startswith('inspectdb_columntypes'), stdout=out) output = out.getvalue() self.longMessage = False self.assertIn(" managed = False", output, msg='inspectdb should generate unmanaged models.')