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403 lines
12 KiB
Python
403 lines
12 KiB
Python
# -*- encoding: utf-8 -*-
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from __future__ import unicode_literals
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import unittest
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from django.core.checks import Error
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from django.core.exceptions import ImproperlyConfigured
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from django.db import connection, models
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from .base import IsolatedModelsTestCase
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class AutoFieldTests(IsolatedModelsTestCase):
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def test_valid_case(self):
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class Model(models.Model):
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id = models.AutoField(primary_key=True)
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field = Model._meta.get_field('id')
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errors = field.check()
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expected = []
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self.assertEqual(errors, expected)
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def test_primary_key(self):
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# primary_key must be True. Refs #12467.
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class Model(models.Model):
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field = models.AutoField(primary_key=False)
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# Prevent Django from autocreating `id` AutoField, which would
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# result in an error, because a model must have exactly one
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# AutoField.
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another = models.IntegerField(primary_key=True)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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'AutoFields must set primary_key=True.',
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hint=None,
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obj=field,
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id='fields.E100',
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),
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]
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self.assertEqual(errors, expected)
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class BooleanFieldTests(IsolatedModelsTestCase):
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def test_nullable_boolean_field(self):
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class Model(models.Model):
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field = models.BooleanField(null=True)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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'BooleanFields do not accept null values.',
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hint='Use a NullBooleanField instead.',
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obj=field,
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id='fields.E110',
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),
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]
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self.assertEqual(errors, expected)
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class CharFieldTests(IsolatedModelsTestCase):
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def test_valid_field(self):
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class Model(models.Model):
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field = models.CharField(
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max_length=255,
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choices=[
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('1', 'item1'),
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('2', 'item2'),
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],
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db_index=True)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = []
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self.assertEqual(errors, expected)
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def test_missing_max_length(self):
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class Model(models.Model):
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field = models.CharField()
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"CharFields must define a 'max_length' attribute.",
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hint=None,
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obj=field,
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id='fields.E120',
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),
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]
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self.assertEqual(errors, expected)
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def test_negative_max_length(self):
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class Model(models.Model):
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field = models.CharField(max_length=-1)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'max_length' must be a positive integer.",
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hint=None,
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obj=field,
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id='fields.E121',
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),
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]
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self.assertEqual(errors, expected)
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def test_bad_max_length_value(self):
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class Model(models.Model):
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field = models.CharField(max_length="bad")
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'max_length' must be a positive integer.",
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hint=None,
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obj=field,
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id='fields.E121',
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),
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]
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self.assertEqual(errors, expected)
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def test_non_iterable_choices(self):
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class Model(models.Model):
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field = models.CharField(max_length=10, choices='bad')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'choices' must be an iterable (e.g., a list or tuple).",
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hint=None,
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obj=field,
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id='fields.E004',
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),
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]
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self.assertEqual(errors, expected)
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def test_choices_containing_non_pairs(self):
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class Model(models.Model):
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field = models.CharField(max_length=10, choices=[(1, 2, 3), (1, 2, 3)])
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'choices' must be an iterable containing (actual value, human readable name) tuples.",
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hint=None,
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obj=field,
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id='fields.E005',
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),
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]
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self.assertEqual(errors, expected)
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def test_bad_db_index_value(self):
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class Model(models.Model):
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field = models.CharField(max_length=10, db_index='bad')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'db_index' must be None, True or False.",
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hint=None,
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obj=field,
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id='fields.E006',
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),
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]
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self.assertEqual(errors, expected)
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@unittest.skipUnless(connection.vendor == 'mysql',
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"Test valid only for MySQL")
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def test_too_long_char_field_under_mysql(self):
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from django.db.backends.mysql.validation import DatabaseValidation
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class Model(models.Model):
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field = models.CharField(unique=True, max_length=256)
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field = Model._meta.get_field('field')
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validator = DatabaseValidation(connection=None)
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errors = validator.check_field(field)
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expected = [
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Error(
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'MySQL does not allow unique CharFields to have a max_length > 255.',
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hint=None,
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obj=field,
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id='mysql.E001',
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)
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]
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self.assertEqual(errors, expected)
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class DecimalFieldTests(IsolatedModelsTestCase):
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def test_required_attributes(self):
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class Model(models.Model):
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field = models.DecimalField()
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"DecimalFields must define a 'decimal_places' attribute.",
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hint=None,
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obj=field,
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id='fields.E130',
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),
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Error(
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"DecimalFields must define a 'max_digits' attribute.",
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hint=None,
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obj=field,
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id='fields.E132',
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),
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]
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self.assertEqual(errors, expected)
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def test_negative_max_digits_and_decimal_places(self):
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class Model(models.Model):
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field = models.DecimalField(max_digits=-1, decimal_places=-1)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'decimal_places' must be a non-negative integer.",
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hint=None,
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obj=field,
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id='fields.E131',
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),
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Error(
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"'max_digits' must be a positive integer.",
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hint=None,
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obj=field,
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id='fields.E133',
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),
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]
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self.assertEqual(errors, expected)
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def test_bad_values_of_max_digits_and_decimal_places(self):
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class Model(models.Model):
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field = models.DecimalField(max_digits="bad", decimal_places="bad")
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'decimal_places' must be a non-negative integer.",
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hint=None,
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obj=field,
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id='fields.E131',
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),
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Error(
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"'max_digits' must be a positive integer.",
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hint=None,
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obj=field,
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id='fields.E133',
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),
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]
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self.assertEqual(errors, expected)
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def test_decimal_places_greater_than_max_digits(self):
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class Model(models.Model):
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field = models.DecimalField(max_digits=9, decimal_places=10)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'max_digits' must be greater or equal to 'decimal_places'.",
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hint=None,
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obj=field,
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id='fields.E134',
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),
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]
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self.assertEqual(errors, expected)
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def test_valid_field(self):
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class Model(models.Model):
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field = models.DecimalField(max_digits=10, decimal_places=10)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = []
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self.assertEqual(errors, expected)
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class FileFieldTests(IsolatedModelsTestCase):
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def test_valid_case(self):
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class Model(models.Model):
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field = models.FileField(upload_to='somewhere')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = []
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self.assertEqual(errors, expected)
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def test_unique(self):
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class Model(models.Model):
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field = models.FileField(unique=False, upload_to='somewhere')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'unique' is not a valid argument for a FileField.",
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hint=None,
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obj=field,
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id='fields.E200',
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)
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]
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self.assertEqual(errors, expected)
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def test_primary_key(self):
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class Model(models.Model):
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field = models.FileField(primary_key=False, upload_to='somewhere')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"'primary_key' is not a valid argument for a FileField.",
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hint=None,
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obj=field,
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id='fields.E201',
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)
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]
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self.assertEqual(errors, expected)
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class FilePathFieldTests(IsolatedModelsTestCase):
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def test_forbidden_files_and_folders(self):
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class Model(models.Model):
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field = models.FilePathField(allow_files=False, allow_folders=False)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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"FilePathFields must have either 'allow_files' or 'allow_folders' set to True.",
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hint=None,
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obj=field,
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id='fields.E140',
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),
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]
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self.assertEqual(errors, expected)
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class GenericIPAddressFieldTests(IsolatedModelsTestCase):
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def test_non_nullable_blank(self):
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class Model(models.Model):
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field = models.GenericIPAddressField(null=False, blank=True)
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [
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Error(
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('GenericIPAddressFields cannot have blank=True if null=False, '
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'as blank values are stored as nulls.'),
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hint=None,
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obj=field,
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id='fields.E150',
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),
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]
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self.assertEqual(errors, expected)
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class ImageFieldTests(IsolatedModelsTestCase):
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def test_pillow_installed(self):
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try:
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import django.utils.image # NOQA
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except ImproperlyConfigured:
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pillow_installed = False
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else:
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pillow_installed = True
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class Model(models.Model):
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field = models.ImageField(upload_to='somewhere')
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field = Model._meta.get_field('field')
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errors = field.check()
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expected = [] if pillow_installed else [
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Error(
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'Cannot use ImageField because Pillow is not installed.',
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hint=('Get Pillow at https://pypi.python.org/pypi/Pillow '
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'or run command "pip install pillow".'),
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obj=field,
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id='fields.E210',
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),
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]
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self.assertEqual(errors, expected)
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