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import re
import warnings
import pytest

def pytest_addoption(parser):
    parser.addoption("--report", action="store_true", dest='report', help='Print Test Report')


def pytest_configure(config):
    if config.getoption("--report"):
        config.report = TestReport(config)
        config.pluginmanager.register(config.report)


def pytest_unconfigure(config):
    report = getattr(config, 'report', None)
    if report:
        del config.report
        config.pluginmanager.unregister(report)


class Result:
    def __init__(self, nodeid, outcome, priority):
        self.nodeid = nodeid
        self.result = self.__get_result(outcome)
        self.priority = priority


    def update(self, outcome):
        result = self.__get_result(outcome)

        if self.result != result:
            if result == "FAIL":
                self.result = "FAIL"

            elif result == "PASS" and self.result != "FAIL":
                self.result = "PASS"


    @staticmethod
    def __get_result(outcome):
        if outcome in ['passed', 'xpassed']:
            return 'PASS'
        if outcome == 'failed':
            return 'FAIL'
        if outcome == 'skipped':
            return 'SKIP'
        if outcome == 'xfailed':
            return 'XFAIL'
        return ''


class TestReport:
    def __init__(self, config):
        self.results = {}
        self.config = config

        # priority os processed test
        self.current_priority = None


    def report(self, terminalreporter):
        terminalreporter.write_sep('=', 'Test Report')
        # pylint: disable=consider-using-f-string
        terminalreporter.write_line('{:45} | Priority | Result    | Comment/Defect ID'\
                                    .format('Test Case Identifier'))
        terminalreporter.write_sep('=')

        for test in sorted(self.results):
            if self.results[test].result == 'PASS':
                markup = {'green': True}
            elif self.results[test].result in ('FAIL', 'XFAIL'):
                markup = {'red': True}
            else:
                markup = {'yellow': True}

            # pylint: disable=consider-using-f-string
            terminalreporter.write('{:45} | {:8} | '\
                .format(self.results[test].nodeid,
                        self.results[test].priority if self.results[test].priority else ""))
            terminalreporter.write('%-10s' % (self.results[test].result), **markup)
            terminalreporter.write('|')
            terminalreporter.write_line("")

        terminalreporter.write_sep('-')


    def pytest_runtest_setup(self, item):
        priority = item.get_closest_marker("priority")
        if priority:
            self.current_priority = priority.args[0]
        else:
            msg = "Priority missing for " + item.nodeid
            warnings.warn(pytest.PytestWarning(msg))
            self.current_priority = None


    def pytest_runtest_logreport(self, report):
        if report.when != "call":
            return

        # We are interested only on executed tests
        if report.outcome == "skipped":
            return

        nodeid = report.nodeid
        nodeid = nodeid.rsplit("::", 1)[1]
        nodeid = re.sub(r"\[.*\]$", "", nodeid)

        if nodeid not in self.results:
            self.results[nodeid] = Result(nodeid, report.outcome, self.current_priority)

        else:
            self.results[nodeid].update(report.outcome)


    def pytest_terminal_summary(self, terminalreporter):
        if self.config.getoption("--report"):
            self.report(terminalreporter)
