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import pytest
from xarray.backends.api import _get_default_engine
from . import requires_netCDF4, requires_scipy
@requires_netCDF4
@requires_scipy
def test__get_default_engine():
engine_remote = _get_default_engine("http://example.org/test.nc", allow_remote=True)
assert engine_remote == "netcdf4"
engine_gz = _get_default_engine("/example.gz")
assert engine_gz == "scipy"
with pytest.raises(ValueError):
_get_default_engine("/example.grib")
engine_default = _get_default_engine("/example")
assert engine_default == "netcdf4"
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