python 2.7: test_lz4_compression_without_IO LZ4_NOT_INSTALLED_ERROR #739
Description
With python version 2.7 the LZ4_NOT_INSTALLED_ERROR is wrong when running the tests and lz4 is not present.
Installing python-lz4 fixes the issue since that function is not run if lz4 is present.
py.test joblib
=================================== FAILURES ===================================
_______________________ test_lz4_compression_without_lz4 _______________________
tmpdir = local('/tmp/nix-build-python2.7-joblib-0.12.2.drv-0/pytest-of-costrouc/pytest-0/test_lz4_compression_without_l0')
@without_lz4
def test_lz4_compression_without_lz4(tmpdir):
# Check that lz4 cannot be used when dependency is not available.
fname = tmpdir.join('test.nolz4').strpath
data = 'test data'
with raises(ValueError) as excinfo:
numpy_pickle.dump(data, fname, compress='lz4')
excinfo.match(LZ4_NOT_INSTALLED_ERROR)
with raises(ValueError) as excinfo:
numpy_pickle.dump(data, fname + '.lz4')
> excinfo.match(LZ4_NOT_INSTALLED_ERROR)
E AssertionError: Pattern 'LZ4 is not installed. Install it with pip: http://python-lz4.readthedocs.io/' not found in 'lz4 compression is only available with python3+.'
joblib/test/test_numpy_pickle.py:1064: AssertionError