Source code for galaxy.tool_util.verify

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

import difflib
import filecmp
import hashlib
import json
import logging
import os
import os.path
import re
import shutil
import tempfile

try:
    import pysam
except ImportError:
    pysam = None

from galaxy.tool_util.parser.util import (
    DEFAULT_DELTA,
    DEFAULT_DELTA_FRAC
)
from galaxy.util import unicodify
from galaxy.util.compression_utils import get_fileobj
from .asserts import verify_assertions
from .test_data import TestDataResolver

log = logging.getLogger(__name__)

DEFAULT_TEST_DATA_RESOLVER = TestDataResolver()


[docs]def verify( item_label, output_content, attributes, filename=None, get_filecontent=None, get_filename=None, keep_outputs_dir=None, verify_extra_files=None, mode='file', ): """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: if get_filecontent is None: get_filecontent = DEFAULT_TEST_DATA_RESOLVER.get_filecontent def get_filename(filename): file_content = get_filecontent(filename) local_name = make_temp_fname(fname=filename) with open(local_name, 'wb') as f: f.write(file_content) return local_name # 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 = f'{item_label} different than expected\n' errmsg += unicodify(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 = f'{item_label} different than expected\n' errmsg += unicodify(err) raise AssertionError(errmsg) if attributes is None: attributes = {} # expected object might be None, so don't pull unless available has_expected_object = 'object' in attributes if has_expected_object: assert filename is None expected_object = attributes.get('object') actual_object = json.loads(output_content) expected_object_type = type(expected_object) actual_object_type = type(actual_object) if expected_object_type != actual_object_type: message = f"Type mismatch between expected object ({expected_object_type}) and actual object ({actual_object_type})" raise AssertionError(message) if expected_object != actual_object: message = f"Expected object ({expected_object}) does not match actual object ({actual_object})" raise AssertionError(message) elif filename is not None: 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 # directory. # This needs to be done before the call to `get_filename()` because that # may raise an exception if `filename` does not exist (e.g. when # generating a tool output file from scratch with # `planemo test --update_test_data`). if keep_outputs_dir: ofn = os.path.join(keep_outputs_dir, filename) out_dir = os.path.dirname(ofn) if not os.path.exists(out_dir): os.makedirs(out_dir) log.debug('keep_outputs_dir: %s, ofn: %s', keep_outputs_dir, ofn) try: shutil.copy(temp_name, ofn) except Exception: log.exception('Could not save output file %s to %s', temp_name, ofn) else: log.debug('## GALAXY_TEST_SAVE=%s. saved %s', keep_outputs_dir, ofn) if mode == 'directory': # if verifying a file inside a extra_files_path directory # filename already point to a file that exists on disk local_name = filename else: local_name = get_filename(filename) compare = attributes.get('compare', 'diff') try: if attributes.get('ftype', None) in ['bam', 'qname_sorted.bam', 'qname_input_sorted.bam', 'unsorted.bam', 'cram']: try: local_fh, temp_name = _bam_to_sam(local_name, temp_name) local_name = local_fh.name except Exception as e: log.warning("%s. Will compare BAM files", unicodify(e)) 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': files_delta(local_name, temp_name, attributes=attributes) elif compare == "contains": files_contains(local_name, temp_name, attributes=attributes) else: raise Exception(f'Unimplemented Compare type: {compare}') except AssertionError as err: errmsg = f'{item_label} different than expected, difference (using {compare}):\n' errmsg += f"( {local_name} v. {temp_name} )\n" errmsg += unicodify(err) raise AssertionError(errmsg) finally: if 'GALAXY_TEST_NO_CLEANUP' not in os.environ: os.remove(temp_name) if verify_extra_files: extra_files = attributes.get('extra_files', None) if extra_files: verify_extra_files(extra_files)
[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 with tempfile.NamedTemporaryFile(prefix='tmp', suffix=suffix, delete=False) as temp: return temp.name
def _bam_to_sam(local_name, temp_name): temp_local = tempfile.NamedTemporaryFile(suffix='.sam', prefix='local_bam_converted_to_sam_') with tempfile.NamedTemporaryFile(suffix='.sam', prefix='history_bam_converted_to_sam_', delete=False) as temp: try: pysam.view('-h', '--no-PG', '-o', temp_local.name, local_name, catch_stdout=False) except Exception as e: msg = f"Converting local (test-data) BAM to SAM failed: {unicodify(e)}" raise Exception(msg) try: pysam.view('-h', '--no-PG', '-o', temp.name, temp_name, catch_stdout=False) except Exception as e: msg = f"Converting history BAM to SAM failed: {unicodify(e)}" raise Exception(msg) os.remove(temp_name) return temp_local, temp.name def _verify_checksum(data, checksum_type, expected_checksum_value): if checksum_type not in ["md5", "sha1", "sha256", "sha512"]: raise Exception(f"Unimplemented hash algorithm [{checksum_type}] encountered.") 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_delta(file1, file2, attributes=None): """Check the contents of 2 files for size differences.""" if attributes is None: attributes = {} delta = attributes.get('delta', DEFAULT_DELTA) delta_frac = attributes.get('delta_frac', DEFAULT_DELTA_FRAC) s1 = os.path.getsize(file1) s2 = os.path.getsize(file2) if abs(s1 - s2) > delta: raise AssertionError('Files %s=%db but %s=%db - compare by size (delta=%s) failed' % (file1, s1, file2, s2, delta)) if delta_frac is not None and not (s1 - (s1 * delta_frac) <= s2 <= s1 + (s1 * delta_frac)): raise AssertionError('Files %s=%db but %s=%db - compare by size (delta_frac=%s) failed' % (file1, s1, file2, s2, delta_frac))
[docs]def get_compressed_formats(attributes): attributes = attributes or {} decompress = attributes.get("decompress") # None means all compressed formats are allowed return None if decompress else []
[docs]def files_diff(file1, file2, attributes=None): """Check the contents of 2 files for differences.""" attributes = attributes or {} 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, shallow=False): compressed_formats = get_compressed_formats(attributes) is_pdf = False try: with get_fileobj(file2, compressed_formats=compressed_formats) as fh: history_data = fh.readlines() with get_fileobj(file1, compressed_formats=compressed_formats) as fh: local_file = fh.readlines() except UnicodeDecodeError: if file1.endswith('.pdf') or file2.endswith('.pdf'): is_pdf = True # Replace non-Unicode characters using unicodify(), # difflib.unified_diff doesn't work on list of bytes history_data = [unicodify(line) for line in get_fileobj(file2, mode='rb', compressed_formats=compressed_formats)] local_file = [unicodify(line) for line in get_fileobj(file1, mode='rb', compressed_formats=compressed_formats)] 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.""" attributes = attributes or {} join_char = '' to_strip = os.linesep compressed_formats = get_compressed_formats(attributes) try: with get_fileobj(file2, compressed_formats=compressed_formats) as fh: history_data = fh.readlines() with get_fileobj(file1, compressed_formats=compressed_formats) as fh: local_file = fh.readlines() except UnicodeDecodeError: join_char = b'' to_strip = os.linesep.encode('utf-8') with open(file2, 'rb') as fh: history_data = fh.readlines() with open(file1, 'rb') as fh: local_file = fh.readlines() assert len(local_file) == len(history_data), 'Data File and Regular Expression File contain a different number of lines (%d != %d)\nHistory Data (first 40 lines):\n%s' % (len(local_file), len(history_data), join_char.join(history_data[:40])) if attributes.get('sort', False): history_data.sort() lines_diff = int(attributes.get('lines_diff', 0)) line_diff_count = 0 diffs = [] for regex_line, data_line in zip(local_file, history_data): regex_line = regex_line.rstrip(to_strip) data_line = data_line.rstrip(to_strip) if not re.match(regex_line, data_line): line_diff_count += 1 diffs.append(f'Regular Expression: {regex_line}, Data file: {data_line}\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.""" attributes = attributes or {} join_char = '' compressed_formats = get_compressed_formats(attributes) try: with get_fileobj(file2, compressed_formats=compressed_formats) as fh: history_data = fh.readlines() with get_fileobj(file1, compressed_formats=compressed_formats) as fh: local_file = fh.read() except UnicodeDecodeError: join_char = b'' with open(file2, 'rb') as fh: history_data = fh.readlines() with open(file1, 'rb') as fh: local_file = fh.read() if attributes.get('sort', False): history_data.sort() history_data = join_char.join(history_data) # 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.""" # TODO: allow forcing ordering of contains attributes = attributes or {} to_strip = os.linesep compressed_formats = get_compressed_formats(attributes) try: with get_fileobj(file2, compressed_formats=compressed_formats) as fh: history_data = fh.read() with get_fileobj(file1, compressed_formats=compressed_formats) as fh: local_file = fh.readlines() except UnicodeDecodeError: to_strip = os.linesep.encode('utf-8') with open(file2, 'rb') as fh: history_data = fh.read() with open(file1, 'rb') as fh: local_file = fh.readlines() lines_diff = int(attributes.get('lines_diff', 0)) line_diff_count = 0 for contains in local_file: contains = contains.rstrip(to_strip) if contains not in history_data: line_diff_count += 1 if line_diff_count > lines_diff: raise AssertionError(f"Failed to find '{contains}' in history data. (lines_diff={lines_diff}).")