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Source code for galaxy.tool_util.verify.asserts.tabular
import re
from ._util import _assert_number
[docs]def get_first_line(output, comment):
"""
get the first non-comment and non-empty line
"""
if comment != "":
match = re.search(f"^([^{comment}].*)$", output, flags=re.MULTILINE)
else:
match = re.search("^(.+)$", output, flags=re.MULTILINE)
if match is None:
return ""
else:
return match.group(1)
[docs]def assert_has_n_columns(output, n: int = None, delta: int = 0, min: int = None, max: int = None, sep='\t', comment="", negate: bool = False):
""" Asserts the tabular output contains n columns. The optional
sep argument specifies the column seperator used to determine the
number of columns. The optional comment argument specifies
comment characters"""
first_line = get_first_line(output, comment)
n_columns = len(first_line.split(sep))
_assert_number(n_columns, n, delta, min, max, negate,
"{expected} {n}+-{delta} columns in output",
"{expected} the number of columns in output to be in [{min}:{max}]")