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Source code for galaxy.tools.verify

"""Module of utilities for verifying test results."""

import difflib
import filecmp
import hashlib
import logging
import os
import re
import shutil
import tempfile

    import pysam
except ImportError:
    pysam = None

from galaxy.util.compression_utils import get_fileobj
from .asserts import verify_assertions
from .test_data import TestDataResolver

log = logging.getLogger(__name__)


[docs]def verify( item_label, output_content, attributes, filename=None, get_filename=None, keep_outputs_dir=None, verify_extra_files=None, ): """Verify the content of a test output using test definitions described by attributes. Throw an informative assertion error if any of these tests fail. """ if get_filename is None: get_filename = DEFAULT_TEST_DATA_RESOLVER.get_filename # Check assertions... assertions = attributes.get("assert_list", None) if attributes is not None and assertions is not None: try: verify_assertions(output_content, attributes["assert_list"]) except AssertionError as err: errmsg = '%s different than expected\n' % (item_label) errmsg += str(err) raise AssertionError(errmsg) # Verify checksum attributes... # works with older Galaxy style md5=<expected_sum> or cwltest # style checksum=<hash_type>$<hash>. expected_checksum_type = None expected_checksum = None if attributes is not None and attributes.get("md5", None) is not None: expected_checksum_type = "md5" expected_checksum = attributes.get("md5") elif attributes is not None and attributes.get("checksum", None) is not None: checksum_value = attributes.get("checksum", None) expected_checksum_type, expected_checksum = checksum_value.split("$", 1) if expected_checksum_type: try: _verify_checksum(output_content, expected_checksum_type, expected_checksum) except AssertionError as err: errmsg = '%s different than expected\n' % (item_label) errmsg += str(err) raise AssertionError(errmsg) if filename is not None: local_name = get_filename(filename) temp_name = make_temp_fname(fname=filename) with open(temp_name, 'wb') as f: f.write(output_content) # if the server's env has GALAXY_TEST_SAVE, save the output file to that dir if keep_outputs_dir: ofn = os.path.join(keep_outputs_dir, os.path.basename(local_name)) log.debug('keep_outputs_dir: %s, ofn: %s', keep_outputs_dir, ofn) try: shutil.copy(temp_name, ofn) except Exception as exc: error_log_msg = 'Could not save output file %s to %s: ' % (temp_name, ofn) error_log_msg += str(exc) log.error(error_log_msg, exc_info=True) else: log.debug('## GALAXY_TEST_SAVE=%s. saved %s' % (keep_outputs_dir, ofn)) try: if attributes is None: attributes = {} compare = attributes.get('compare', 'diff') if attributes.get('ftype', None) in ['bam', 'qname_sorted.bam', 'qname_input_sorted.bam', 'unsorted.bam']: local_fh, temp_name = _bam_to_sam(local_name, temp_name) local_name = local_fh.name if compare == 'diff': files_diff(local_name, temp_name, attributes=attributes) elif compare == 're_match': files_re_match(local_name, temp_name, attributes=attributes) elif compare == 're_match_multiline': files_re_match_multiline(local_name, temp_name, attributes=attributes) elif compare == 'sim_size': delta = attributes.get('delta', '100') s1 = len(output_content) s2 = os.path.getsize(local_name) if abs(s1 - s2) > int(delta): raise AssertionError('Files %s=%db but %s=%db - compare by size (delta=%s) failed' % (temp_name, s1, local_name, s2, delta)) elif compare == "contains": files_contains(local_name, temp_name, attributes=attributes) else: raise Exception('Unimplemented Compare type: %s' % compare) if verify_extra_files: extra_files = attributes.get('extra_files', None) if extra_files: verify_extra_files(extra_files) except AssertionError as err: errmsg = '%s different than expected, difference (using %s):\n' % (item_label, compare) errmsg += "( %s v. %s )\n" % (local_name, temp_name) errmsg += str(err) raise AssertionError(errmsg) finally: if 'GALAXY_TEST_NO_CLEANUP' not in os.environ: os.remove(temp_name)
[docs]def make_temp_fname(fname=None): """Safe temp name - preserve the file extension for tools that interpret it.""" suffix = os.path.split(fname)[-1] # ignore full path fd, temp_prefix = tempfile.mkstemp(prefix='tmp', suffix=suffix) return temp_prefix
def _bam_to_sam(local_name, temp_name): temp_local = tempfile.NamedTemporaryFile(suffix='.sam', prefix='local_bam_converted_to_sam_') fd, temp_temp = tempfile.mkstemp(suffix='.sam', prefix='history_bam_converted_to_sam_') os.close(fd) try: pysam.view('-h', '-o%s' % temp_local.name, local_name) except Exception as e: raise Exception("Converting local (test-data) BAM to SAM failed: %s" % e) try: pysam.view('-h', '-o%s' % temp_temp, temp_name) except Exception as e: raise Exception("Converting history BAM to SAM failed: %s" % e) os.remove(temp_name) return temp_local, temp_temp def _verify_checksum(data, checksum_type, expected_checksum_value): if checksum_type not in ["md5", "sha1", "sha256", "sha512"]: raise Exception("Unimplemented hash algorithm [%s] encountered." % checksum_type) h = hashlib.new(checksum_type) h.update(data) actual_checksum_value = h.hexdigest() if expected_checksum_value != actual_checksum_value: template = "Output checksum [%s] does not match expected [%s] (using hash algorithm %s)." message = template % (actual_checksum_value, expected_checksum_value, checksum_type) raise AssertionError(message)
[docs]def files_diff(file1, file2, attributes=None): """Check the contents of 2 files for differences.""" def get_lines_diff(diff): count = 0 for line in diff: if (line.startswith('+') and not line.startswith('+++')) or (line.startswith('-') and not line.startswith('---')): count += 1 return count if not filecmp.cmp(file1, file2): if attributes is None: attributes = {} decompress = attributes.get("decompress", None) if decompress: # None means all compressed formats are allowed compressed_formats = None else: compressed_formats = [] is_pdf = False try: local_file = get_fileobj(file1, 'U', compressed_formats=compressed_formats).readlines() history_data = get_fileobj(file2, 'U', compressed_formats=compressed_formats).readlines() except UnicodeDecodeError: if file1.endswith('.pdf') or file2.endswith('.pdf'): is_pdf = True local_file = open(file1, 'rb').readlines() history_data = open(file2, 'rb').readlines() else: raise AssertionError("Binary data detected, not displaying diff") if attributes.get('sort', False): local_file.sort() history_data.sort() allowed_diff_count = int(attributes.get('lines_diff', 0)) diff = list(difflib.unified_diff(local_file, history_data, "local_file", "history_data")) diff_lines = get_lines_diff(diff) if diff_lines > allowed_diff_count: if 'GALAXY_TEST_RAW_DIFF' in os.environ: diff_slice = diff else: if len(diff) < 60: diff_slice = diff[0:40] else: diff_slice = diff[:25] + ["********\n", "*SNIP *\n", "********\n"] + diff[-25:] # FIXME: This pdf stuff is rather special cased and has not been updated to consider lines_diff # due to unknown desired behavior when used in conjunction with a non-zero lines_diff # PDF forgiveness can probably be handled better by not special casing by __extension__ here # and instead using lines_diff or a regular expression matching # or by creating and using a specialized pdf comparison function if is_pdf: # PDF files contain creation dates, modification dates, ids and descriptions that change with each # new file, so we need to handle these differences. As long as the rest of the PDF file does # not differ we're ok. valid_diff_strs = ['description', 'createdate', 'creationdate', 'moddate', 'id', 'producer', 'creator'] valid_diff = False invalid_diff_lines = 0 for line in diff_slice: # Make sure to lower case strings before checking. line = line.lower() # Diff lines will always start with a + or - character, but handle special cases: '--- local_file \n', '+++ history_data \n' if (line.startswith('+') or line.startswith('-')) and line.find('local_file') < 0 and line.find('history_data') < 0: for vdf in valid_diff_strs: if line.find(vdf) < 0: valid_diff = False else: valid_diff = True # Stop checking as soon as we know we have a valid difference break if not valid_diff: invalid_diff_lines += 1 log.info('## files diff on %s and %s lines_diff=%d, found diff = %d, found pdf invalid diff = %d' % (file1, file2, allowed_diff_count, diff_lines, invalid_diff_lines)) if invalid_diff_lines > allowed_diff_count: # Print out diff_slice so we can see what failed log.info("###### diff_slice ######") raise AssertionError("".join(diff_slice)) else: log.info('## files diff on %s and %s lines_diff=%d, found diff = %d' % (file1, file2, allowed_diff_count, diff_lines)) raise AssertionError("".join(diff_slice))
[docs]def files_re_match(file1, file2, attributes=None): """Check the contents of 2 files for differences using re.match.""" local_file = open(file1, 'U').readlines() # regex file history_data = open(file2, 'U').readlines() assert len(local_file) == len(history_data), 'Data File and Regular Expression File contain a different number of lines (%s != %s)\nHistory Data (first 40 lines):\n%s' % (len(local_file), len(history_data), ''.join(history_data[:40])) if attributes is None: attributes = {} if attributes.get('sort', False): history_data.sort() lines_diff = int(attributes.get('lines_diff', 0)) line_diff_count = 0 diffs = [] for i in range(len(history_data)): if not re.match(local_file[i].rstrip('\r\n'), history_data[i].rstrip('\r\n')): line_diff_count += 1 diffs.append('Regular Expression: %s\nData file : %s' % (local_file[i].rstrip('\r\n'), history_data[i].rstrip('\r\n'))) if line_diff_count > lines_diff: raise AssertionError("Regular expression did not match data file (allowed variants=%i):\n%s" % (lines_diff, "".join(diffs)))
[docs]def files_re_match_multiline(file1, file2, attributes=None): """Check the contents of 2 files for differences using re.match in multiline mode.""" local_file = open(file1, 'U').read() # regex file if attributes is None: attributes = {} if attributes.get('sort', False): history_data = open(file2, 'U').readlines() history_data.sort() history_data = ''.join(history_data) else: history_data = open(file2, 'U').read() # lines_diff not applicable to multiline matching assert re.match(local_file, history_data, re.MULTILINE), "Multiline Regular expression did not match data file"
[docs]def files_contains(file1, file2, attributes=None): """Check the contents of file2 for substrings found in file1, on a per-line basis.""" local_file = open(file1, 'U').readlines() # regex file # TODO: allow forcing ordering of contains history_data = open(file2, 'U').read() lines_diff = int(attributes.get('lines_diff', 0)) line_diff_count = 0 while local_file: contains = local_file.pop(0).rstrip('\n\r') if contains not in history_data: line_diff_count += 1 if line_diff_count > lines_diff: raise AssertionError("Failed to find '%s' in history data. (lines_diff=%i):\n" % (contains, lines_diff))