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from __future__ import unicode_literals
from django.core.management import call_command
from django.db import connection
from django.test import TestCase, skipUnlessDBFeature
from django.utils.six import StringIO
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)
@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"
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)
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