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import os
from qolab.file_utils import infer_compression, save_table_with_header
def test_infer_compression():
assert infer_compression("data.dat") is None
assert infer_compression("data.unknown_ext") is None
assert infer_compression("data.dat.gz") == "gzip"
assert infer_compression("data.dat.bz") == "bzip"
assert infer_compression("data.dat.bz2") == "bzip"
def test_save_table_with_header_match_filename_to_compression():
import tempfile
data = [[1, 3], [2, 5]]
headerstr = ["header 1", "header 2"]
with tempfile.TemporaryDirectory(prefix="qolab_test") as d:
fname = os.path.join(d, "t.dat")
assert save_table_with_header(
fname,
data,
header=headerstr,
compressionmethod=None,
match_filename_to_compression=True,
) == (fname)
assert save_table_with_header(
fname,
data,
header=headerstr,
compressionmethod="gzip",
match_filename_to_compression=True,
) == (fname + ".gz")
assert save_table_with_header(
fname,
data,
header=headerstr,
compressionmethod="bzip",
match_filename_to_compression=True,
) == (fname + ".bz")
# now cases when requested extension does not match the compression
assert save_table_with_header(
fname + ".gz",
data,
header=headerstr,
compressionmethod=None,
match_filename_to_compression=True,
) == (fname + ".gz.dat")
assert save_table_with_header(
fname + ".bz",
data,
header=headerstr,
compressionmethod="gzip",
match_filename_to_compression=True,
) == (fname + ".bz.gz")
assert save_table_with_header(
fname + ".gz",
data,
header=headerstr,
compressionmethod="bzip",
match_filename_to_compression=True,
) == (fname + ".gz.bz")
# do as I told cases, extension does not match compression
assert save_table_with_header(
fname + ".gz",
data,
header=headerstr,
compressionmethod=None,
match_filename_to_compression=False,
) == (fname + ".gz")
assert save_table_with_header(
fname,
data,
header=headerstr,
compressionmethod="gzip",
match_filename_to_compression=False,
) == (fname)
assert save_table_with_header(
fname,
data,
header=headerstr,
compressionmethod="bzip",
match_filename_to_compression=False,
) == (fname)
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