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import warnings
from unittest import skipIf
from django.test import SimpleTestCase
from ..utils import setup
try:
import numpy
VisibleDeprecationWarning = numpy.VisibleDeprecationWarning
except ImportError:
numpy = False
except AttributeError: # numpy < 1.9.0, e.g. 1.8.2 in Debian 8
VisibleDeprecationWarning = DeprecationWarning
@skipIf(numpy is False, "Numpy must be installed to run these tests.")
class NumpyTests(SimpleTestCase):
# Ignore numpy deprecation warnings (#23890)
if numpy:
warnings.filterwarnings(
"ignore",
"Using a non-integer number instead of an "
"integer will result in an error in the future",
VisibleDeprecationWarning
)
@setup({'numpy-array-index01': '{{ var.1 }}'})
def test_numpy_array_index01(self):
"""
Numpy's array-index syntax allows a template to access a certain
item of a subscriptable object.
"""
output = self.engine.render_to_string(
'numpy-array-index01',
{'var': numpy.array(["first item", "second item"])},
)
self.assertEqual(output, 'second item')
@setup({'numpy-array-index02': '{{ var.5 }}'})
def test_numpy_array_index02(self):
"""
Fail silently when the array index is out of range.
"""
output = self.engine.render_to_string(
'numpy-array-index02',
{'var': numpy.array(["first item", "second item"])},
)
if self.engine.string_if_invalid:
self.assertEqual(output, 'INVALID')
else:
self.assertEqual(output, '')
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