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from django.core.exceptions import ValidationError
from django.forms import FloatField, NumberInput
from django.test import SimpleTestCase
from django.test.utils import ignore_warnings, override_settings
from django.utils import formats, translation
from django.utils.deprecation import RemovedInDjango50Warning
from . import FormFieldAssertionsMixin
class FloatFieldTest(FormFieldAssertionsMixin, SimpleTestCase):
def test_floatfield_1(self):
f = FloatField()
self.assertWidgetRendersTo(f, '<input step="any" type="number" name="f" id="id_f" required>')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean('')
with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
f.clean(None)
self.assertEqual(1.0, f.clean('1'))
self.assertIsInstance(f.clean('1'), float)
self.assertEqual(23.0, f.clean('23'))
self.assertEqual(3.1400000000000001, f.clean('3.14'))
self.assertEqual(3.1400000000000001, f.clean(3.14))
self.assertEqual(42.0, f.clean(42))
with self.assertRaisesMessage(ValidationError, "'Enter a number.'"):
f.clean('a')
self.assertEqual(1.0, f.clean('1.0 '))
self.assertEqual(1.0, f.clean(' 1.0'))
self.assertEqual(1.0, f.clean(' 1.0 '))
with self.assertRaisesMessage(ValidationError, "'Enter a number.'"):
f.clean('1.0a')
self.assertIsNone(f.max_value)
self.assertIsNone(f.min_value)
with self.assertRaisesMessage(ValidationError, "'Enter a number.'"):
f.clean('Infinity')
with self.assertRaisesMessage(ValidationError, "'Enter a number.'"):
f.clean('NaN')
with self.assertRaisesMessage(ValidationError, "'Enter a number.'"):
f.clean('-Inf')
def test_floatfield_2(self):
f = FloatField(required=False)
self.assertIsNone(f.clean(''))
self.assertIsNone(f.clean(None))
self.assertEqual(1.0, f.clean('1'))
self.assertIsNone(f.max_value)
self.assertIsNone(f.min_value)
def test_floatfield_3(self):
f = FloatField(max_value=1.5, min_value=0.5)
self.assertWidgetRendersTo(
f,
'<input step="any" name="f" min="0.5" max="1.5" type="number" id="id_f" required>',
)
with self.assertRaisesMessage(ValidationError, "'Ensure this value is less than or equal to 1.5.'"):
f.clean('1.6')
with self.assertRaisesMessage(ValidationError, "'Ensure this value is greater than or equal to 0.5.'"):
f.clean('0.4')
self.assertEqual(1.5, f.clean('1.5'))
self.assertEqual(0.5, f.clean('0.5'))
self.assertEqual(f.max_value, 1.5)
self.assertEqual(f.min_value, 0.5)
def test_floatfield_widget_attrs(self):
f = FloatField(widget=NumberInput(attrs={'step': 0.01, 'max': 1.0, 'min': 0.0}))
self.assertWidgetRendersTo(
f,
'<input step="0.01" name="f" min="0.0" max="1.0" type="number" id="id_f" required>',
)
def test_floatfield_localized(self):
"""
A localized FloatField's widget renders to a text input without any
number input specific attributes.
"""
f = FloatField(localize=True)
self.assertWidgetRendersTo(f, '<input id="id_f" name="f" type="text" required>')
def test_floatfield_changed(self):
f = FloatField()
n = 4.35
self.assertFalse(f.has_changed(n, '4.3500'))
with translation.override('fr'):
f = FloatField(localize=True)
localized_n = formats.localize_input(n) # -> '4,35' in French
self.assertFalse(f.has_changed(n, localized_n))
# RemovedInDjango50Warning: When the deprecation ends, remove
# @ignore_warnings and USE_L10N=False. The test should remain because
# format-related settings will take precedence over locale-dictated
# formats.
@ignore_warnings(category=RemovedInDjango50Warning)
@override_settings(USE_L10N=False, DECIMAL_SEPARATOR=',')
def test_decimalfield_support_decimal_separator(self):
f = FloatField(localize=True)
self.assertEqual(f.clean('1001,10'), 1001.10)
self.assertEqual(f.clean('1001.10'), 1001.10)
# RemovedInDjango50Warning: When the deprecation ends, remove
# @ignore_warnings and USE_L10N=False. The test should remain because
# format-related settings will take precedence over locale-dictated
# formats.
@ignore_warnings(category=RemovedInDjango50Warning)
@override_settings(USE_L10N=False, DECIMAL_SEPARATOR=',', USE_THOUSAND_SEPARATOR=True,
THOUSAND_SEPARATOR='.')
def test_decimalfield_support_thousands_separator(self):
f = FloatField(localize=True)
self.assertEqual(f.clean('1.001,10'), 1001.10)
msg = "'Enter a number.'"
with self.assertRaisesMessage(ValidationError, msg):
f.clean('1,001.1')
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