# Source code for gunittest.reporters

    """
    GRASS Python testing framework module for report generation

    Copyright (C) 2014 by the GRASS Development Team
    This program is free software under the GNU General Public
    License (>=v2). Read the file COPYING that comes with GRASS GIS
    for details.

    :authors: Vaclav Petras
    """

    import os
    import datetime
    import xml.sax.saxutils as saxutils
    import xml.etree.ElementTree as et
    import subprocess
    import sys
    import collections
    import re
    from collections.abc import Iterable

    from .utils import ensure_dir
    from .checkers import text_to_keyvalue

    if sys.version_info[0] == 2:
        from StringIO import StringIO
    else:
        from io import StringIO

    # TODO: change text_to_keyvalue to same sep as here
    # TODO: create keyvalue file and move it there together with things from checkers
    def keyvalue_to_text(keyvalue, sep="=", vsep="\n", isep=",", last_vertical=None):
        if not last_vertical:
            last_vertical = vsep == "\n"
        items = []
        for key, value in keyvalue.items():
            # TODO: use isep for iterables other than strings
            if not isinstance(value, str) and isinstance(value, Iterable):
                # TODO: this does not work for list of non-strings
                value = isep.join(value)
            items.append("{key}{sep}{value}".format(key=key, sep=sep, value=value))
        text = vsep.join(items)
        if last_vertical:
            text = text + vsep
        return text

    def replace_in_file(file_path, pattern, repl):
        """

        :param repl: a repl parameter of ``re.sub()`` function
        """
        # using tmp file to store the replaced content
        tmp_file_path = file_path + ".tmp"
        old_file = open(file_path, "r")
        new_file = open(tmp_file_path, "w")
        for line in old_file:
            new_file.write(re.sub(pattern=pattern, string=line, repl=repl))
        new_file.close()
        old_file.close()
        # remove old file since it must not exist for rename/move
        os.remove(file_path)
        # replace old file by new file
        # TODO: this can fail in some (random) cases on MS Windows
        os.rename(tmp_file_path, file_path)

    class NoopFileAnonymizer(object):
        def anonymize(self, filenames):
            pass

    # TODO: why not remove GISDBASE by default?
    class FileAnonymizer(object):
        def __init__(self, paths_to_remove, remove_gisbase=True, remove_gisdbase=False):
            self._paths_to_remove = []
            if remove_gisbase:
                gisbase = os.environ["GISBASE"]
                self._paths_to_remove.append(gisbase)
            if remove_gisdbase:
                # import only when really needed to avoid problems with
                # translations when environment is not set properly
                import grass.script as gscript

                gisdbase = gscript.gisenv()["GISDBASE"]
                self._paths_to_remove.append(gisdbase)
            if paths_to_remove:
                self._paths_to_remove.extend(paths_to_remove)

        def anonymize(self, filenames):
            # besides GISBASE and test recursion start directory (which is
            # supposed to be source root directory or similar) we can also try
            # to remove user home directory and GISDBASE
            # we suppose that we run in standard grass session
            # TODO: provide more effective implementation

            # regex for a trailing separator
            path_end = r"[\\/]?"
            for path in self._paths_to_remove:
                for filename in filenames:
                    # literal special characters (e.g., ^\()[]{}.*+-$) in path need
                    # to be escaped in a regex (2nd argument); otherwise, they will
                    # be interpreted as special characters
                    replace_in_file(filename, re.escape(path) + path_end, "")

    def get_source_url(path, revision, line=None):
        """

        :param path: directory or file path relative to remote repository root
        :param revision: SVN revision (should be a number)
        :param line: line in the file (should be None for directories)
        """
        tracurl = "http://trac.osgeo.org/grass/browser/"
        if line:
            return "{tracurl}{path}?rev={revision}#L{line}".format(**locals())
        else:
            return "{tracurl}{path}?rev={revision}".format(**locals())

    def html_escape(text):
        """Escape ``'&'``, ``'<'``, and ``'>'`` in a string of data."""
        return saxutils.escape(text)

    def html_unescape(text):
        """Unescape ``'&amp;'``, ``'&lt;'``, and ``'&gt;'`` in a string of data."""
        return saxutils.unescape(text)

    def color_error_line(line):
        if line.startswith("ERROR: "):
            # TODO: use CSS class
            # ignoring the issue with \n at the end, HTML don't mind
            line = '<span style="color: red">' + line + "</span>"
        if line.startswith("FAIL: "):
            # TODO: use CSS class
            # ignoring the issue with \n at the end, HTML don't mind
            line = '<span style="color: red">' + line + "</span>"
        if line.startswith("WARNING: "):
            # TODO: use CSS class
            # ignoring the issue with \n at the end, HTML don't mind
            line = '<span style="color: blue">' + line + "</span>"
        # if line.startswith('Traceback ('):
        #    line = '<span style="color: red">' + line + "</span>"
        return line

    def to_web_path(path):
        """Replace OS dependent path separator with slash.

        Path on MS Windows are not usable in links on web. For MS Windows,
        this replaces backslash with (forward) slash.
        """
        if os.path.sep != "/":
            return path.replace(os.path.sep, "/")
        else:
            return path

    def get_svn_revision():
        """Get SVN revision number

        :returns: SVN revision number as string or None if it is
            not possible to get
        """
        # TODO: here should be starting directory
        # but now we are using current as starting
        p = subprocess.Popen(
            ["svnversion", "."], stdout=subprocess.PIPE, stderr=subprocess.PIPE
        )
        stdout, stderr = p.communicate()
        rc = p.poll()
        if not rc:
            stdout = stdout.strip()
            if stdout.endswith("M"):
                stdout = stdout[:-1]
            if ":" in stdout:
                # the first one is the one of source code
                stdout = stdout.split(":")[0]
            return stdout
        else:
            return None

    def get_svn_info():
        """Get important information from ``svn info``

        :returns: SVN info as dictionary or None
            if it is not possible to obtain it
        """
        try:
            # TODO: introduce directory, not only current
            p = subprocess.Popen(
                ["svn", "info", ".", "--xml"],
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
            )
            stdout, stderr = p.communicate()
            rc = p.poll()
            info = {}
            if not rc:
                root = et.fromstring(stdout)
                # TODO: get also date if this make sense
                # expecting only one <entry> element
                entry = root.find("entry")
                info["revision"] = entry.get("revision")
                info["url"] = entry.find("url").text
                relurl = entry.find("relative-url")
                # element which is not found is None
                # empty element would be bool(el) == False
                if relurl is not None:
                    relurl = relurl.text
                    # relative path has ^ at the beginning in SVN version 1.8.8
                    if relurl.startswith("^"):
                        relurl = relurl[1:]
                else:
                    # SVN version 1.8.8 supports relative-url but older do not
                    # so, get relative part from absolute URL
                    const_url_part = "https://svn.osgeo.org/grass/"
                    relurl = info["url"][len(const_url_part) :]
                info["relative-url"] = relurl
                return info
        # TODO: add this to svnversion function
        except OSError as e:
            import errno

            # ignore No such file or directory
            if e.errno != errno.ENOENT:
                raise
        return None

    def years_ago(date, years):
        # dateutil relative delte would be better but this is more portable
        return date - datetime.timedelta(weeks=years * 52)

    # TODO: these functions should be called only if we know that svn is installed
    # this will simplify the functions, caller must handle it anyway
    def get_svn_path_authors(path, from_date=None):
        """

        :returns: a set of authors
        """
        if from_date is None:
            # this is the SVN default for local copies
            revision_range = "BASE:1"
        else:
            revision_range = "BASE:{%s}" % from_date
        try:
            # TODO: allow also usage of --limit
            p = subprocess.Popen(
                ["svn", "log", "--xml", "--revision", revision_range, path],
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
            )
            stdout, stderr = p.communicate()
            rc = p.poll()
            if not rc:
                root = et.fromstring(stdout)
                # TODO: get also date if this make sense
                # expecting only one <entry> element
                author_nodes = root.iterfind("*/author")
                authors = [n.text for n in author_nodes]
                return set(authors)
        except OSError as e:
            import errno

            # ignore No such file or directory
            if e.errno != errno.ENOENT:
                raise
        return None

    def get_html_test_authors_table(directory, tests_authors):
        # SVN gives us authors of code together with authors of tests
        # so test code authors list also contains authors of tests only
        # TODO: don't do this for the top level directories?
        tests_authors = set(tests_authors)
        no_svn_text = (
            '<span style="font-size: 60%">' "Test file authors were not obtained." "</span>"
        )
        if not tests_authors or (len(tests_authors) == 1 and list(tests_authors)[0] == ""):
            return "<h3>Code and test authors</h3>" + no_svn_text
        from_date = years_ago(datetime.date.today(), years=1)
        tested_dir_authors = get_svn_path_authors(directory, from_date)
        if tested_dir_authors is not None:
            not_testing_authors = tested_dir_authors - tests_authors
        else:
            no_svn_text = (
                '<span style="font-size: 60%">'
                "Authors cannot be obtained using SVN."
                "</span>"
            )
            not_testing_authors = tested_dir_authors = [no_svn_text]
        if not not_testing_authors:
            not_testing_authors = ["all recent authors contributed tests"]

        test_authors = (
            "<h3>Code and test authors</h3>"
            '<p style="font-size: 60%"><em>'
            "Note that determination of authors is approximate and only"
            " recent code authors are considered."
            "</em></p>"
            "<table><tbody>"
            "<tr><td>Test authors:</td><td>{file_authors}</td></tr>"
            "<tr><td>Authors of tested code:</td><td>{code_authors}</td></tr>"
            "<tr><td>Authors owing tests:</td><td>{not_testing}</td></tr>"
            "</tbody></table>".format(
                file_authors=", ".join(sorted(tests_authors)),
                code_authors=", ".join(sorted(tested_dir_authors)),
                not_testing=", ".join(sorted(not_testing_authors)),
            )
        )
        return test_authors

    class GrassTestFilesMultiReporter(object):
        """Interface to multiple repoter objects

        For start and finish of the tests and of a test of one file,
        it calls corresponding methods of all contained reporters.
        For all other attributes, it returns attribute of a first reporter
        which has this attribute using the order in which the reporters were
        provided.
        """

        def __init__(self, reporters, forgiving=False):
            self.reporters = reporters
            self.forgiving = forgiving

        def start(self, results_dir):
            # TODO: no directory cleaning (self.clean_before)? now cleaned by caller
            # TODO: perhaps only those whoe need it should do it (even multiple times)
            # and there is also the delet problem
            ensure_dir(os.path.abspath(results_dir))
            for reporter in self.reporters:
                try:
                    reporter.start(results_dir)
                except AttributeError:
                    if self.forgiving:
                        pass
                    else:
                        raise

        def finish(self):
            for reporter in self.reporters:
                try:
                    reporter.finish()
                except AttributeError:
                    if self.forgiving:
                        pass
                    else:
                        raise

        def start_file_test(self, module):
            for reporter in self.reporters:
                try:
                    reporter.start_file_test(module)
                except AttributeError:
                    if self.forgiving:
                        pass
                    else:
                        raise

        def end_file_test(self, **kwargs):
            for reporter in self.reporters:
                try:
                    reporter.end_file_test(**kwargs)
                except AttributeError:
                    if self.forgiving:
                        pass
                    else:
                        raise

        def __getattr__(self, name):
            for reporter in self.reporters:
                try:
                    return getattr(reporter, name)
                except AttributeError:
                    continue
            raise AttributeError

    class GrassTestFilesCountingReporter(object):
        def __init__(self):
            self.test_files = None
            self.files_fail = None
            self.files_pass = None

            self.file_pass_per = None
            self.file_fail_per = None

            self.main_start_time = None
            self.main_end_time = None
            self.main_time = None

            self.file_start_time = None
            self.file_end_time = None
            self.file_time = None
            self._start_file_test_called = False

        def start(self, results_dir):
            self.test_files = 0
            self.files_fail = 0
            self.files_pass = 0

            # this might be moved to some report start method
            self.main_start_time = datetime.datetime.now()

        def finish(self):
            self.main_end_time = datetime.datetime.now()
            self.main_time = self.main_end_time - self.main_start_time

            assert self.test_files == self.files_fail + self.files_pass
            if self.test_files:
                self.file_pass_per = 100 * float(self.files_pass) / self.test_files
                self.file_fail_per = 100 * float(self.files_fail) / self.test_files
            else:
                # if no tests were executed, probably something bad happened
                # try to report at least something
                self.file_pass_per = None
                self.file_fail_per = None

        def start_file_test(self, module):
            self.file_start_time = datetime.datetime.now()
            self._start_file_test_called = True
            self.test_files += 1

        def end_file_test(self, returncode, **kwargs):
            assert self._start_file_test_called
            self.file_end_time = datetime.datetime.now()
            self.file_time = self.file_end_time - self.file_start_time
            if returncode:
                self.files_fail += 1
            else:
                self.files_pass += 1
            self._start_file_test_called = False

    def percent_to_html(percent):
        if percent is None:
            return '<span style="color: {color}">unknown percentage</span>'
        elif percent > 100 or percent < 0:
            return "? {:.2f}% ?".format(percent)
        elif percent < 40:
            color = "red"
        elif percent < 70:
            color = "orange"
        else:
            color = "green"
        return '<span style="color: {color}">{percent:.0f}%</span>'.format(
            percent=percent, color=color
        )

    def wrap_stdstream_to_html(infile, outfile, module, stream):
        before = "<html><body><h1>%s</h1><pre>" % (module.name + " " + stream)
        after = "</pre></body></html>"
        html = open(outfile, "w")
        html.write(before)
        with open(infile) as text:
            for line in text:
                html.write(color_error_line(html_escape(line)))
        html.write(after)
        html.close()

    def html_file_preview(filename):
        before = "<pre>"
        after = "</pre>"
        if not os.path.isfile(filename):
            return '<p style="color: red>File %s does not exist</p>' % filename
        size = os.path.getsize(filename)
        if not size:
            return '<p style="color: red>File %s is empty</p>' % filename
        max_size = 10000
        html = StringIO()
        html.write(before)
        if size < max_size:
            with open(filename) as text:
                for line in text:
                    html.write(color_error_line(html_escape(line)))
        elif size < 10 * max_size:

            def tail(filename, n):
                return collections.deque(open(filename), n)

            html.write("... (lines omitted)\n")
            for line in tail(filename, 50):
                html.write(color_error_line(html_escape(line)))
        else:
            return '<p style="color: red>File %s is too large to show</p>' % filename
        html.write(after)
        return html.getvalue()

    def returncode_to_html_text(returncode, timed_out=None):
        if returncode:
            if timed_out is not None:
                extra = f" (timeout >{timed_out}s)"
            else:
                extra = ""
            return f'<span style="color: red">FAILED{extra}</span>'
        else:
            # alternatives: SUCCEEDED, passed, OK
            return '<span style="color: green">succeeded</span>'

    # not used
    def returncode_to_html_sentence(returncode):
        if returncode:
            return (
                '<span style="color: red">&#x274c;</span>'
                " Test failed (return code %d)" % (returncode)
            )
        else:
            return (
                '<span style="color: green">&#x2713;</span>'
                " Test succeeded (return code %d)" % (returncode)
            )

    def returncode_to_success_html_par(returncode):
        if returncode:
            return '<p> <span style="color: red">&#x274c;</span>' " Test failed</p>"
        else:
            return '<p> <span style="color: green">&#x2713;</span>' " Test succeeded</p>"

    def success_to_html_text(total, successes):
        if successes < total:
            return '<span style="color: red">FAILED</span>'
        elif successes == total:
            # alternatives: SUCCEEDED, passed, OK
            return '<span style="color: green">succeeded</span>'
        else:
            return (
                '<span style="color: red; font-size: 60%">'
                "? more successes than total ?</span>"
            )

    UNKNOWN_NUMBER_HTML = '<span style="font-size: 60%">unknown</span>'

    def success_to_html_percent(total, successes):
        if total:
            pass_per = 100 * (float(successes) / total)
            pass_per = percent_to_html(pass_per)
        else:
            pass_per = UNKNOWN_NUMBER_HTML
        return pass_per

    class GrassTestFilesHtmlReporter(GrassTestFilesCountingReporter):

        unknown_number = UNKNOWN_NUMBER_HTML

        def __init__(self, file_anonymizer, main_page_name="index.html"):
            super(GrassTestFilesHtmlReporter, self).__init__()
            self.main_index = None
            self._file_anonymizer = file_anonymizer
            self._main_page_name = main_page_name

        def start(self, results_dir):
            super(GrassTestFilesHtmlReporter, self).start(results_dir)
            # having all variables public although not really part of API
            main_page_name = os.path.join(results_dir, self._main_page_name)
            self.main_index = open(main_page_name, "w")

            # TODO: this can be moved to the counter class
            self.failures = 0
            self.errors = 0
            self.skipped = 0
            self.successes = 0
            self.expected_failures = 0
            self.unexpected_success = 0
            self.total = 0

            svn_info = get_svn_info()
            if not svn_info:
                svn_text = (
                    '<span style="font-size: 60%">'
                    "SVN revision cannot be obtained"
                    "</span>"
                )
            else:
                url = get_source_url(
                    path=svn_info["relative-url"], revision=svn_info["revision"]
                )
                svn_text = ("SVN revision" ' <a href="{url}">' "{rev}</a>").format(
                    url=url, rev=svn_info["revision"]
                )
            self.main_index.write(
                "<html><body>"
                "<h1>Test results</h1>"
                "{time:%Y-%m-%d %H:%M:%S}"
                " ({svn})"
                "<table>"
                "<thead><tr>"
                "<th>Tested directory</th>"
                "<th>Test file</th>"
                "<th>Status</th>"
                "<th>Tests</th><th>Successful</td>"
                "<th>Failed</th><th>Percent successful</th>"
                "</tr></thead><tbody>".format(time=self.main_start_time, svn=svn_text)
            )

        def finish(self):
            super(GrassTestFilesHtmlReporter, self).finish()

            pass_per = success_to_html_percent(total=self.total, successes=self.successes)
            tfoot = (
                "<tfoot>"
                "<tr>"
                "<td>Summary</td>"
                "<td>{nfiles} test files</td>"
                "<td>{nsper}</td>"
                "<td>{total}</td><td>{st}</td><td>{ft}</td><td>{pt}</td>"
                "</tr>"
                "</tfoot>".format(
                    nfiles=self.test_files,
                    nsper=percent_to_html(self.file_pass_per),
                    st=self.successes,
                    ft=self.failures + self.errors,
                    total=self.total,
                    pt=pass_per,
                )
            )

            # this is the second place with this function
            # TODO: provide one implementation
            def format_percentage(percentage):
                if percentage is not None:
                    return "{nsper:.0f}%".format(nsper=percentage)
                else:
                    return "unknown percentage"

            summary_sentence = (
                "\nExecuted {nfiles} test files in {time:}."
                "\nFrom them"
                " {nsfiles} files ({nsper}) were successful"
                " and {nffiles} files ({nfper}) failed.\n".format(
                    nfiles=self.test_files,
                    time=self.main_time,
                    nsfiles=self.files_pass,
                    nffiles=self.files_fail,
                    nsper=format_percentage(self.file_pass_per),
                    nfper=format_percentage(self.file_fail_per),
                )
            )

            self.main_index.write(
                "<tbody>{tfoot}</table>"
                "<p>{summary}</p>"
                "</body></html>".format(tfoot=tfoot, summary=summary_sentence)
            )
            self.main_index.close()

        def start_file_test(self, module):
            super(GrassTestFilesHtmlReporter, self).start_file_test(module)
            self.main_index.flush()  # to get previous lines to the report

        def end_file_test(
            self, module, cwd, returncode, stdout, stderr, test_summary, timed_out=None
        ):
            super(GrassTestFilesHtmlReporter, self).end_file_test(
                module=module,
                cwd=cwd,
                returncode=returncode,
                stdout=stdout,
                stderr=stderr,
                timed_out=timed_out,
            )
            # considering others according to total is OK when we more or less
            # know that input data make sense (total >= errors + failures)
            total = test_summary.get("total", None)
            failures = test_summary.get("failures", 0)
            errors = test_summary.get("errors", 0)
            # Python unittest TestResult class is reporting success for no
            # errors or failures, so skipped, expected failures and unexpected
            # success are ignored
            # but successful tests are only total - the others
            # TODO: add success counter to GrassTestResult base class
            skipped = test_summary.get("skipped", 0)
            expected_failures = test_summary.get("expected_failures", 0)
            unexpected_successes = test_summary.get("unexpected_successes", 0)
            successes = test_summary.get("successes", 0)

            self.failures += failures
            self.errors += errors
            self.skipped += skipped
            self.expected_failures += expected_failures
            self.unexpected_success += unexpected_successes

            # zero would be valid here
            if total is not None:
                # success are only the clear ones
                # percentage is influenced by all
                # but putting only failures to table
                self.successes += successes
                self.total += total
                # this will handle zero
                pass_per = success_to_html_percent(total=total, successes=successes)
            else:
                total = successes = pass_per = self.unknown_number
            bad_ones = failures + errors
            self.main_index.write(
                "<tr><td>{d}</td>"
                '<td><a href="{d}/{m}/index.html">{m}</a></td>'
                "<td>{status}</td>"
                "<td>{ntests}</td><td>{stests}</td>"
                "<td>{ftests}</td><td>{ptests}</td>"
                "<tr>".format(
                    d=to_web_path(module.tested_dir),
                    m=module.name,
                    status=returncode_to_html_text(returncode, timed_out),
                    stests=successes,
                    ftests=bad_ones,
                    ntests=total,
                    ptests=pass_per,
                )
            )
            wrap_stdstream_to_html(
                infile=stdout,
                outfile=os.path.join(cwd, "stdout.html"),
                module=module,
                stream="stdout",
            )
            wrap_stdstream_to_html(
                infile=stderr,
                outfile=os.path.join(cwd, "stderr.html"),
                module=module,
                stream="stderr",
            )

            file_index_path = os.path.join(cwd, "index.html")
            file_index = open(file_index_path, "w")
            file_index.write(
                '<!DOCTYPE html><html><head><meta charset="utf-8"></head><body>'
                "<h1>{m.name}</h1>"
                "<h2>{m.tested_dir} &ndash; {m.name}</h2>"
                "{status}".format(
                    m=module,
                    status=returncode_to_success_html_par(returncode),
                )
            )

            # TODO: include optionally hyper link to test suite
            # TODO: file_path is reconstucted in a naive way
            # file_path should be stored in the module/test file object and just used here
            summary_section = (
                "<table><tbody>"
                "<tr><td>Test</td><td>{m}</td></tr>"
                "<tr><td>Testsuite</td><td>{d}</td></tr>"
                "<tr><td>Test file</td><td>{file_path}</td></tr>"
                "<tr><td>Status</td><td>{status}</td></tr>"
                "<tr><td>Return code</td><td>{rc}</td></tr>"
                "<tr><td>Number of tests</td><td>{ntests}</td></tr>"
                "<tr><td>Successful tests</td><td>{stests}</td></tr>"
                "<tr><td>Failed tests</td><td>{ftests}</td></tr>"
                "<tr><td>Percent successful</td><td>{ptests}</td></tr>"
                "<tr><td>Test duration</td><td>{dur}</td></tr>".format(
                    d=module.tested_dir,
                    m=module.name,
                    file_path=os.path.join(
                        module.tested_dir, "testsuite", module.name + "." + module.file_type
                    ),
                    status=returncode_to_html_text(returncode, timed_out),
                    stests=successes,
                    ftests=bad_ones,
                    ntests=total,
                    ptests=pass_per,
                    rc=returncode,
                    dur=self.file_time,
                )
            )
            file_index.write(summary_section)

            modules = test_summary.get("tested_modules", None)
            if modules:
                # TODO: replace by better handling of potential lists when parsing
                # TODO: create link to module if running in grass or in addons
                # alternatively a link to module test summary
                if type(modules) is not list:
                    modules = [modules]
                file_index.write(
                    "<tr><td>Tested modules</td><td>{0}</td></tr>".format(
                        ", ".join(sorted(set(modules)))
                    )
                )
            file_index.write("</tbody></table>")

            # here we would have also links to coverage, profiling, ...
            # '<li><a href="testcodecoverage/index.html">code coverage</a></li>'
            files_section = (
                "<h3>Supplementary files</h3>"
                "<ul>"
                '<li><a href="stdout.html">standard output (stdout)</a></li>'
                '<li><a href="stderr.html">standard error output (stderr)</a></li>'
            )
            file_index.write(files_section)

            supplementary_files = test_summary.get("supplementary_files", None)
            if supplementary_files:
                # this is something we might want to do once for all and not
                # risk that it will be done twice or rely that somebody else
                # will do it for use
                # the solution is perhaps do the multi reporter more grass-specific
                # and do all common things, so that other can rely on it and
                # moreover something can be shared with other explicitly
                # using constructors as seems advantageous for counting
                self._file_anonymizer.anonymize(supplementary_files)
                for f in supplementary_files:
                    file_index.write('<li><a href="{f}">{f}</a></li>'.format(f=f))

            file_index.write("</ul>")

            if returncode:
                file_index.write("<h3>Standard error output (stderr)</h3>")
                file_index.write(html_file_preview(stderr))

            file_index.write("</body></html>")
            file_index.close()

            if returncode:
                pass
                # TODO: here we don't have opportunity to write error file
                # to stream (stdout/stderr)
                # a stream can be added and if not none, we could write

    # TODO: document info: additional information to be stored type: dict
    # allows overwriting what was collected
    class GrassTestFilesKeyValueReporter(GrassTestFilesCountingReporter):
        def __init__(self, info=None):
            super(GrassTestFilesKeyValueReporter, self).__init__()
            self.result_dir = None
            self._info = info

        def start(self, results_dir):
            super(GrassTestFilesKeyValueReporter, self).start(results_dir)
            # having all variables public although not really part of API
            self.result_dir = results_dir

            # TODO: this can be moved to the counter class
            self.failures = 0
            self.errors = 0
            self.skipped = 0
            self.successes = 0
            self.expected_failures = 0
            self.unexpected_success = 0
            self.total = 0

            # TODO: document: tested_dirs is a list and it should fit with names
            self.names = []
            self.tested_dirs = []
            self.files_returncodes = []

            # sets (no size specified)
            self.modules = set()
            self.test_files_authors = set()

        def finish(self):
            super(GrassTestFilesKeyValueReporter, self).finish()

            # this shoul be moved to some additional meta passed in constructor
            svn_info = get_svn_info()
            if not svn_info:
                svn_revision = ""
            else:
                svn_revision = svn_info["revision"]

            summary = {}
            summary["files_total"] = self.test_files
            summary["files_successes"] = self.files_pass
            summary["files_failures"] = self.files_fail

            summary["names"] = self.names
            summary["tested_dirs"] = self.tested_dirs
            # TODO: we don't have a general mechanism for storing any type in text
            summary["files_returncodes"] = [str(item) for item in self.files_returncodes]

            # let's use seconds as a universal time delta format
            # (there is no standard way how to store time delta as string)
            summary["time"] = self.main_time.total_seconds()

            status = "failed" if self.files_fail else "succeeded"
            summary["status"] = status

            summary["total"] = self.total
            summary["successes"] = self.successes
            summary["failures"] = self.failures
            summary["errors"] = self.errors
            summary["skipped"] = self.skipped
            summary["expected_failures"] = self.expected_failures
            summary["unexpected_successes"] = self.unexpected_success

            summary["test_files_authors"] = self.test_files_authors
            summary["tested_modules"] = self.modules
            summary["svn_revision"] = svn_revision
            # ignoring issues with time zones
            summary["timestamp"] = self.main_start_time.strftime("%Y-%m-%d %H:%M:%S")
            # TODO: add some general metadata here (passed in constructor)

            # add additional information
            for key, value in self._info.items():
                summary[key] = value

            summary_filename = os.path.join(self.result_dir, "test_keyvalue_result.txt")
            with open(summary_filename, "w") as summary_file:
                text = keyvalue_to_text(summary, sep="=", vsep="\n", isep=",")
                summary_file.write(text)

        def end_file_test(
            self, module, cwd, returncode, stdout, stderr, test_summary, timed_out=None
        ):
            super(GrassTestFilesKeyValueReporter, self).end_file_test(
                module=module,
                cwd=cwd,
                returncode=returncode,
                stdout=stdout,
                stderr=stderr,
                timed_out=timed_out,
            )
            # TODO: considering others according to total, OK?
            # here we are using 0 for total but HTML reporter is using None
            total = test_summary.get("total", 0)
            failures = test_summary.get("failures", 0)
            errors = test_summary.get("errors", 0)
            # Python unittest TestResult class is reporting success for no
            # errors or failures, so skipped, expected failures and unexpected
            # success are ignored
            # but successful tests are only total - the others
            skipped = test_summary.get("skipped", 0)
            expected_failures = test_summary.get("expected_failures", 0)
            unexpected_successes = test_summary.get("unexpected_successes", 0)
            successes = test_summary.get("successes", 0)

            # TODO: move this to counter class and perhaps use aggregation
            # rather then inheritance
            self.failures += failures
            self.errors += errors
            self.skipped += skipped
            self.expected_failures += expected_failures
            self.unexpected_success += unexpected_successes

            # TODO: should we test for zero?
            if total is not None:
                # success are only the clear ones
                # percentage is influenced by all
                # but putting only failures to table
                self.successes += successes
                self.total += total

            self.files_returncodes.append(returncode)

            self.tested_dirs.append(module.tested_dir)
            self.names.append(module.name)

            modules = test_summary.get("tested_modules", None)
            if modules:
                # TODO: replace by better handling of potential lists when parsing
                # TODO: create link to module if running in grass or in addons
                # alternatively a link to module test summary
                if type(modules) not in [list, set]:
                    modules = [modules]
                self.modules.update(modules)

            test_file_authors = test_summary["test_file_authors"]
            if type(test_file_authors) not in [list, set]:
                test_file_authors = [test_file_authors]
            self.test_files_authors.update(test_file_authors)

    class GrassTestFilesTextReporter(GrassTestFilesCountingReporter):
        def __init__(self, stream):
            super(GrassTestFilesTextReporter, self).__init__()
            self._stream = stream

        def start(self, results_dir):
            super(GrassTestFilesTextReporter, self).start(results_dir)

        def finish(self):
            super(GrassTestFilesTextReporter, self).finish()

            def format_percentage(percentage):
                if percentage is not None:
                    return "{nsper:.0f}%".format(nsper=percentage)
                else:
                    return "unknown percentage"

            summary_sentence = (
                "\nExecuted {nfiles} test files in {time:}."
                "\nFrom them"
                " {nsfiles} files ({nsper}) were successful"
                " and {nffiles} files ({nfper}) failed.\n".format(
                    nfiles=self.test_files,
                    time=self.main_time,
                    nsfiles=self.files_pass,
                    nffiles=self.files_fail,
                    nsper=format_percentage(self.file_pass_per),
                    nfper=format_percentage(self.file_fail_per),
                )
            )
            self._stream.write(summary_sentence)

        def start_file_test(self, module):
            super(GrassTestFilesTextReporter, self).start_file_test(module)
            self._stream.write("Running {file}...\n".format(file=module.file_path))
            # get the above line and all previous ones to the report
            self._stream.flush()

        def end_file_test(
            self, module, cwd, returncode, stdout, stderr, test_summary, timed_out=None
        ):
            super(GrassTestFilesTextReporter, self).end_file_test(
                module=module,
                cwd=cwd,
                returncode=returncode,
                stdout=stdout,
                stderr=stderr,
                timed_out=timed_out,
            )

            if returncode:
                width = 72
                self._stream.write(width * "=")
                self._stream.write("\n")
                with open(stderr) as text:
                    self._stream.write(text.read())
                self._stream.write(width * "=")
                self._stream.write("\n")
                self._stream.write(f"FAILED {module.file_path}")
                if timed_out:
                    self._stream.write(f" - Timeout >{timed_out}s")
                num_failed = test_summary.get("failures", 0)
                num_failed += test_summary.get("errors", 0)
                if num_failed:
                    if num_failed > 1:
                        text = " ({f} tests failed)"
                    else:
                        text = " ({f} test failed)"
                    self._stream.write(text.format(f=num_failed))
                self._stream.write("\n")
                # TODO: here we lost the possibility to include also file name
                # of the appropriate report

    # TODO: there is a quite a lot duplication between this class and html reporter
    # TODO: document: do not use it for two reports, it accumulates the results
    # TODO: add also keyvalue summary generation?
    # wouldn't this conflict with collecting data from report afterwards?
    class TestsuiteDirReporter(object):
        def __init__(
            self,
            main_page_name,
            testsuite_page_name="index.html",
            top_level_testsuite_page_name=None,
        ):
            self.main_page_name = main_page_name
            self.testsuite_page_name = testsuite_page_name
            self.top_level_testsuite_page_name = top_level_testsuite_page_name

            # TODO: this might be even a object which could add and validate
            self.failures = 0
            self.errors = 0
            self.skipped = 0
            self.successes = 0
            self.expected_failures = 0
            self.unexpected_successes = 0
            self.total = 0

            self.testsuites = 0
            self.testsuites_successes = 0
            self.files = 0
            self.files_successes = 0

        def report_for_dir(self, root, directory, test_files):
            # TODO: create object from this, so that it can be passed from
            # one function to another
            # TODO: put the inside of for loop to another function
            dir_failures = 0
            dir_errors = 0
            dir_skipped = 0
            dir_successes = 0
            dir_expected_failures = 0
            dir_unexpected_success = 0
            dir_total = 0
            test_files_authors = []

            file_total = 0
            file_successes = 0

            page_name = os.path.join(root, directory, self.testsuite_page_name)
            if self.top_level_testsuite_page_name and os.path.abspath(
                os.path.join(root, directory)
            ) == os.path.abspath(root):
                page_name = os.path.join(root, self.top_level_testsuite_page_name)
            page = open(page_name, "w")
            # TODO: should we use forward slashes also for the HTML because
            # it is simpler are more consistent with the rest on MS Windows?
            head = "<html><body>" "<h1>{name} testsuite results</h1>".format(name=directory)
            tests_table_head = (
                "<h3>Test files results</h3>"
                "<table>"
                "<thead><tr>"
                "<th>Test file</th><th>Status</th>"
                "<th>Tests</th><th>Successful</td>"
                "<th>Failed</th><th>Percent successful</th>"
                "</tr></thead><tbody>"
            )
            page.write(head)
            page.write(tests_table_head)
            for test_file_name in test_files:
                # TODO: put keyvalue fine name to constant
                summary_filename = os.path.join(
                    root, directory, test_file_name, "test_keyvalue_result.txt"
                )
                # if os.path.exists(summary_filename):
                with open(summary_filename, "r") as keyval_file:
                    summary = text_to_keyvalue(keyval_file.read(), sep="=")
                # else:
                # TODO: write else here
                #    summary = None

                if "total" not in summary:
                    bad_ones = successes = UNKNOWN_NUMBER_HTML
                    total = None
                else:
                    bad_ones = summary["failures"] + summary["errors"]
                    successes = summary["successes"]
                    total = summary["total"]

                    self.failures += summary["failures"]
                    self.errors += summary["errors"]
                    self.skipped += summary["skipped"]
                    self.successes += summary["successes"]
                    self.expected_failures += summary["expected_failures"]
                    self.unexpected_successes += summary["unexpected_successes"]
                    self.total += summary["total"]

                    dir_failures += summary["failures"]
                    dir_errors += summary["failures"]
                    dir_skipped += summary["skipped"]
                    dir_successes += summary["successes"]
                    dir_expected_failures += summary["expected_failures"]
                    dir_unexpected_success += summary["unexpected_successes"]
                    dir_total += summary["total"]

                # TODO: keyvalue method should have types for keys function
                # perhaps just the current post processing function is enough
                test_file_authors = summary.get("test_file_authors")
                if not test_file_authors:
                    test_file_authors = []
                if type(test_file_authors) is not list:
                    test_file_authors = [test_file_authors]
                test_files_authors.extend(test_file_authors)

                file_total += 1
                # Use non-zero return code in case it is missing.
                # (This can happen when the test has timed out.)
                return_code = summary.get("returncode", 1)
                file_successes += 0 if return_code else 1

                pass_per = success_to_html_percent(total=total, successes=successes)
                row = (
                    "<tr>"
                    '<td><a href="{f}/index.html">{f}</a></td>'
                    "<td>{status}</td>"
                    "<td>{ntests}</td><td>{stests}</td>"
                    "<td>{ftests}</td><td>{ptests}</td>"
                    "<tr>".format(
                        f=test_file_name,
                        status=returncode_to_html_text(return_code),
                        stests=successes,
                        ftests=bad_ones,
                        ntests=total,
                        ptests=pass_per,
                    )
                )
                page.write(row)

            self.testsuites += 1
            self.testsuites_successes += 1 if file_successes == file_total else 0
            self.files += file_total
            self.files_successes += file_successes

            dir_pass_per = success_to_html_percent(total=dir_total, successes=dir_successes)
            file_pass_per = success_to_html_percent(
                total=file_total, successes=file_successes
            )
            tests_table_foot = (
                "</tbody><tfoot><tr>"
                "<td>Summary</td>"
                "<td>{status}</td>"
                "<td>{ntests}</td><td>{stests}</td>"
                "<td>{ftests}</td><td>{ptests}</td>"
                "</tr></tfoot></table>".format(
                    status=file_pass_per,
                    stests=dir_successes,
                    ftests=dir_failures + dir_errors,
                    ntests=dir_total,
                    ptests=dir_pass_per,
                )
            )
            page.write(tests_table_foot)
            test_authors = get_html_test_authors_table(
                directory=directory, tests_authors=test_files_authors
            )
            page.write(test_authors)
            page.write("</body></html>")
            page.close()

            status = success_to_html_text(total=file_total, successes=file_successes)
            row = (
                "<tr>"
                '<td><a href="{d}/{page}">{d}</a></td><td>{status}</td>'
                "<td>{nfiles}</td><td>{sfiles}</td><td>{pfiles}</td>"
                "<td>{ntests}</td><td>{stests}</td>"
                "<td>{ftests}</td><td>{ptests}</td>"
                "<tr>".format(
                    d=to_web_path(directory),
                    page=self.testsuite_page_name,
                    status=status,
                    nfiles=file_total,
                    sfiles=file_successes,
                    pfiles=file_pass_per,
                    stests=dir_successes,
                    ftests=dir_failures + dir_errors,
                    ntests=dir_total,
                    ptests=dir_pass_per,
                )
            )
            return row

        def report_for_dirs(self, root, directories):
            # TODO: this will need chanages according to potential changes in absolute/relative paths

            page_name = os.path.join(root, self.main_page_name)
            page = open(page_name, "w")
            head = "<html><body>" "<h1>Testsuites results</h1>"
            tests_table_head = (
                "<table>"
                "<thead><tr>"
                "<th>Testsuite</th>"
                "<th>Status</th>"
                "<th>Test files</th><th>Successful</td>"
                "<th>Percent successful</th>"
                "<th>Tests</th><th>Successful</td>"
                "<th>Failed</th><th>Percent successful</th>"
                "</tr></thead><tbody>"
            )
            page.write(head)
            page.write(tests_table_head)

            for directory, test_files in directories.items():
                row = self.report_for_dir(
                    root=root, directory=directory, test_files=test_files
                )
                page.write(row)

            pass_per = success_to_html_percent(total=self.total, successes=self.successes)
            file_pass_per = success_to_html_percent(
                total=self.files, successes=self.files_successes
            )
            testsuites_pass_per = success_to_html_percent(
                total=self.testsuites, successes=self.testsuites_successes
            )
            tests_table_foot = (
                "<tfoot>"
                "<tr>"
                "<td>Summary</td><td>{status}</td>"
                "<td>{nfiles}</td><td>{sfiles}</td><td>{pfiles}</td>"
                "<td>{ntests}</td><td>{stests}</td>"
                "<td>{ftests}</td><td>{ptests}</td>"
                "</tr>"
                "</tfoot>".format(
                    status=testsuites_pass_per,
                    nfiles=self.files,
                    sfiles=self.files_successes,
                    pfiles=file_pass_per,
                    stests=self.successes,
                    ftests=self.failures + self.errors,
                    ntests=self.total,
                    ptests=pass_per,
                )
            )
            page.write(tests_table_foot)
            page.write("</body></html>")

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