406 lines
12 KiB
Python
406 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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'The field must have primary_key=True, because it is an AutoField.',
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hint=None,
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obj=field,
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id='E048',
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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 acceps null values.',
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hint='Use a NullBooleanField instead.',
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obj=field,
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id='E037',
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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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'The field must have "max_length" attribute.',
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hint=None,
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obj=field,
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id='E038',
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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='E039',
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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='E039',
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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='E033',
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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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('All "choices" elements must be a tuple of two elements '
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'(the first one is the actual value to be stored '
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'and the second element is the human-readable name).'),
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hint=None,
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obj=field,
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id='E034',
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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 either None, True or False.',
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hint=None,
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obj=field,
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id='E035',
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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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('Under mysql backend, the field cannot have a "max_length" '
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'greated than 255 when it is unique.'),
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hint=None,
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obj=field,
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id='E047',
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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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'The field requires a "decimal_places" attribute.',
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hint=None,
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obj=field,
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id='E041',
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),
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Error(
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'The field requires a "max_digits" attribute.',
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hint=None,
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obj=field,
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id='E043',
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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" attribute must be a non-negative integer.',
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hint=None,
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obj=field,
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id='E042',
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),
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Error(
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'"max_digits" attribute must be a positive integer.',
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hint=None,
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obj=field,
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id='E044',
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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" attribute must be a non-negative integer.',
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hint=None,
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obj=field,
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id='E042',
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),
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Error(
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'"max_digits" attribute must be a positive integer.',
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hint=None,
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obj=field,
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id='E044',
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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='E040',
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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 FileField.',
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hint=None,
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obj=field,
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id='E049',
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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 FileField.',
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hint=None,
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obj=field,
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id='E050',
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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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'The field 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='E045',
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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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('The field cannot accept blank values if null values '
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'are not allowed, as blank values are stored as null.'),
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hint=None,
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obj=field,
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id='E046',
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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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'To use ImageFields, Pillow must be 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='E032',
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),
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]
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self.assertEqual(errors, expected)
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