view env/lib/python3.9/site-packages/galaxy/tool_util/verify/__init__.py @ 0:4f3585e2f14b draft default tip

"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"

"""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()


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 = '%s different than expected\n' % (item_label)
            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 = '%s different than expected\n' % (item_label)
            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('Unimplemented Compare type: %s' % 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)


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', '-o%s' % temp_local.name, local_name)
        except Exception as e:
            msg = "Converting local (test-data) BAM to SAM failed: %s" % unicodify(e)
            raise Exception(msg)
        try:
            pysam.view('-h', '-o%s' % temp.name, temp_name)
        except Exception as e:
            msg = "Converting history BAM to SAM failed: %s" % 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("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)


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))


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, shallow=False):
        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:
            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(l) for l in get_fileobj(file2, mode='rb', compressed_formats=compressed_formats)]
                local_file = [unicodify(l) for l 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))


def files_re_match(file1, file2, attributes=None):
    """Check the contents of 2 files for differences using re.match."""
    join_char = ''
    to_strip = os.linesep
    try:
        with open(file2, encoding='utf-8') as fh:
            history_data = fh.readlines()
        with open(file1, encoding='utf-8') 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 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 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)))


def files_re_match_multiline(file1, file2, attributes=None):
    """Check the contents of 2 files for differences using re.match in multiline mode."""
    join_char = ''
    try:
        with open(file2, encoding='utf-8') as fh:
            history_data = fh.readlines()
        with open(file1, encoding='utf-8') 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 is None:
        attributes = {}
    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"


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
    to_strip = os.linesep
    try:
        with open(file2, encoding='utf-8') as fh:
            history_data = fh.read()
        with open(file1, encoding='utf-8') 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()
    if attributes is None:
        attributes = {}
    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("Failed to find '%s' in history data. (lines_diff=%i)" % (contains, lines_diff))