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import os
import tempfile
import unittest
import netCDF4
FILE_NAME = tempfile.NamedTemporaryFile(suffix='.nc', delete=False).name
class TestNoIterNoContains(unittest.TestCase):
def setUp(self) -> None:
self.file = FILE_NAME
with netCDF4.Dataset(self.file, "w") as dataset:
# just create a simple variable
dataset.createVariable("var1", int)
def tearDown(self) -> None:
os.remove(self.file)
def test_no_iter(self) -> None:
"""Verify that iteration is explicitly not supported"""
with netCDF4.Dataset(self.file, "r") as dataset:
with self.assertRaises(TypeError):
for _ in dataset: # type: ignore # type checker catches that this doesn't work
pass
def test_no_contains(self) -> None:
"""Verify the membership operations are explicity not supported"""
with netCDF4.Dataset(self.file, "r") as dataset:
with self.assertRaises(TypeError):
_ = "var1" in dataset
if __name__ == "__main__":
unittest.main(verbosity=2)
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