junitxml.py

"""
    report test results in JUnit-XML format,
    for use with Jenkins and build integration servers.


Based on initial code from Ross Lawley.

Output conforms to https://github.com/jenkinsci/xunit-plugin/blob/master/
src/main/resources/org/jenkinsci/plugins/xunit/types/model/xsd/junit-10.xsd
"""
import functools
import os
import platform
import re
import sys
import time
from datetime import datetime

import py

import pytest
from _pytest import deprecated
from _pytest import nodes
from _pytest.config import filename_arg
from _pytest.warnings import _issue_warning_captured


class Junit(py.xml.Namespace):
    pass


# We need to get the subset of the invalid unicode ranges according to
# XML 1.0 which are valid in this python build.  Hence we calculate
# this dynamically instead of hardcoding it.  The spec range of valid
# chars is: Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD]
#                    | [#x10000-#x10FFFF]
_legal_chars = (0x09, 0x0A, 0x0D)
_legal_ranges = ((0x20, 0x7E), (0x80, 0xD7FF), (0xE000, 0xFFFD), (0x10000, 0x10FFFF))
_legal_xml_re = [
    "{}-{}".format(chr(low), chr(high))
    for (low, high) in _legal_ranges
    if low < sys.maxunicode
]
_legal_xml_re = [chr(x) for x in _legal_chars] + _legal_xml_re
illegal_xml_re = re.compile("[^%s]" % "".join(_legal_xml_re))
del _legal_chars
del _legal_ranges
del _legal_xml_re

_py_ext_re = re.compile(r"\.py$")


def bin_xml_escape(arg):
    def repl(matchobj):
        i = ord(matchobj.group())
        if i <= 0xFF:
            return "#x%02X" % i
        else:
            return "#x%04X" % i

    return py.xml.raw(illegal_xml_re.sub(repl, py.xml.escape(arg)))


def merge_family(left, right):
    result = {}
    for kl, vl in left.items():
        for kr, vr in right.items():
            if not isinstance(vl, list):
                raise TypeError(type(vl))
            result[kl] = vl + vr
    left.update(result)


families = {}
families["_base"] = {"testcase": ["classname", "name"]}
families["_base_legacy"] = {"testcase": ["file", "line", "url"]}

# xUnit 1.x inherits legacy attributes
families["xunit1"] = families["_base"].copy()
merge_family(families["xunit1"], families["_base_legacy"])

# xUnit 2.x uses strict base attributes
families["xunit2"] = families["_base"]


class _NodeReporter:
    def __init__(self, nodeid, xml):
        self.id = nodeid
        self.xml = xml
        self.add_stats = self.xml.add_stats
        self.family = self.xml.family
        self.duration = 0
        self.properties = []
        self.nodes = []
        self.testcase = None
        self.attrs = {}

    def append(self, node):
        self.xml.add_stats(type(node).__name__)
        self.nodes.append(node)

    def add_property(self, name, value):
        self.properties.append((str(name), bin_xml_escape(value)))

    def add_attribute(self, name, value):
        self.attrs[str(name)] = bin_xml_escape(value)

    def make_properties_node(self):
        """Return a Junit node containing custom properties, if any.
        """
        if self.properties:
            return Junit.properties(
                [
                    Junit.property(name=name, value=value)
                    for name, value in self.properties
                ]
            )
        return ""

    def record_testreport(self, testreport):
        assert not self.testcase
        names = mangle_test_address(testreport.nodeid)
        existing_attrs = self.attrs
        classnames = names[:-1]
        if self.xml.prefix:
            classnames.insert(0, self.xml.prefix)
        attrs = {
            "classname": ".".join(classnames),
            "name": bin_xml_escape(names[-1]),
            "file": testreport.location[0],
        }
        if testreport.location[1] is not None:
            attrs["line"] = testreport.location[1]
        if hasattr(testreport, "url"):
            attrs["url"] = testreport.url
        self.attrs = attrs
        self.attrs.update(existing_attrs)  # restore any user-defined attributes

        # Preserve legacy testcase behavior
        if self.family == "xunit1":
            return

        # Filter out attributes not permitted by this test family.
        # Including custom attributes because they are not valid here.
        temp_attrs = {}
        for key in self.attrs.keys():
            if key in families[self.family]["testcase"]:
                temp_attrs[key] = self.attrs[key]
        self.attrs = temp_attrs

    def to_xml(self):
        testcase = Junit.testcase(time="%.3f" % self.duration, **self.attrs)
        testcase.append(self.make_properties_node())
        for node in self.nodes:
            testcase.append(node)
        return testcase

    def _add_simple(self, kind, message, data=None):
        data = bin_xml_escape(data)
        node = kind(data, message=message)
        self.append(node)

    def write_captured_output(self, report):
        if not self.xml.log_passing_tests and report.passed:
            return

        content_out = report.capstdout
        content_log = report.caplog
        content_err = report.capstderr

        if content_log or content_out:
            if content_log and self.xml.logging == "system-out":
                if content_out:
                    # syncing stdout and the log-output is not done yet. It's
                    # probably not worth the effort. Therefore, first the captured
                    # stdout is shown and then the captured logs.
                    content = "\n".join(
                        [
                            " Captured Stdout ".center(80, "-"),
                            content_out,
                            "",
                            " Captured Log ".center(80, "-"),
                            content_log,
                        ]
                    )
                else:
                    content = content_log
            else:
                content = content_out

            if content:
                tag = getattr(Junit, "system-out")
                self.append(tag(bin_xml_escape(content)))

        if content_log or content_err:
            if content_log and self.xml.logging == "system-err":
                if content_err:
                    content = "\n".join(
                        [
                            " Captured Stderr ".center(80, "-"),
                            content_err,
                            "",
                            " Captured Log ".center(80, "-"),
                            content_log,
                        ]
                    )
                else:
                    content = content_log
            else:
                content = content_err

            if content:
                tag = getattr(Junit, "system-err")
                self.append(tag(bin_xml_escape(content)))

    def append_pass(self, report):
        self.add_stats("passed")

    def append_failure(self, report):
        # msg = str(report.longrepr.reprtraceback.extraline)
        if hasattr(report, "wasxfail"):
            self._add_simple(Junit.skipped, "xfail-marked test passes unexpectedly")
        else:
            if hasattr(report.longrepr, "reprcrash"):
                message = report.longrepr.reprcrash.message
            elif isinstance(report.longrepr, str):
                message = report.longrepr
            else:
                message = str(report.longrepr)
            message = bin_xml_escape(message)
            fail = Junit.failure(message=message)
            fail.append(bin_xml_escape(report.longrepr))
            self.append(fail)

    def append_collect_error(self, report):
        # msg = str(report.longrepr.reprtraceback.extraline)
        self.append(
            Junit.error(bin_xml_escape(report.longrepr), message="collection failure")
        )

    def append_collect_skipped(self, report):
        self._add_simple(Junit.skipped, "collection skipped", report.longrepr)

    def append_error(self, report):
        if report.when == "teardown":
            msg = "test teardown failure"
        else:
            msg = "test setup failure"
        self._add_simple(Junit.error, msg, report.longrepr)

    def append_skipped(self, report):
        if hasattr(report, "wasxfail"):
            xfailreason = report.wasxfail
            if xfailreason.startswith("reason: "):
                xfailreason = xfailreason[8:]
            self.append(
                Junit.skipped(
                    "", type="pytest.xfail", message=bin_xml_escape(xfailreason)
                )
            )
        else:
            filename, lineno, skipreason = report.longrepr
            if skipreason.startswith("Skipped: "):
                skipreason = skipreason[9:]
            details = "{}:{}: {}".format(filename, lineno, skipreason)

            self.append(
                Junit.skipped(
                    bin_xml_escape(details),
                    type="pytest.skip",
                    message=bin_xml_escape(skipreason),
                )
            )
            self.write_captured_output(report)

    def finalize(self):
        data = self.to_xml().unicode(indent=0)
        self.__dict__.clear()
        self.to_xml = lambda: py.xml.raw(data)


def _warn_incompatibility_with_xunit2(request, fixture_name):
    """Emits a PytestWarning about the given fixture being incompatible with newer xunit revisions"""
    from _pytest.warning_types import PytestWarning

    xml = getattr(request.config, "_xml", None)
    if xml is not None and xml.family not in ("xunit1", "legacy"):
        request.node.warn(
            PytestWarning(
                "{fixture_name} is incompatible with junit_family '{family}' (use 'legacy' or 'xunit1')".format(
                    fixture_name=fixture_name, family=xml.family
                )
            )
        )


@pytest.fixture
def record_property(request):
    """Add an extra properties the calling test.
    User properties become part of the test report and are available to the
    configured reporters, like JUnit XML.
    The fixture is callable with ``(name, value)``, with value being automatically
    xml-encoded.

    Example::

        def test_function(record_property):
            record_property("example_key", 1)
    """
    _warn_incompatibility_with_xunit2(request, "record_property")

    def append_property(name, value):
        request.node.user_properties.append((name, value))

    return append_property


@pytest.fixture
def record_xml_attribute(request):
    """Add extra xml attributes to the tag for the calling test.
    The fixture is callable with ``(name, value)``, with value being
    automatically xml-encoded
    """
    from _pytest.warning_types import PytestExperimentalApiWarning

    request.node.warn(
        PytestExperimentalApiWarning("record_xml_attribute is an experimental feature")
    )

    _warn_incompatibility_with_xunit2(request, "record_xml_attribute")

    # Declare noop
    def add_attr_noop(name, value):
        pass

    attr_func = add_attr_noop

    xml = getattr(request.config, "_xml", None)
    if xml is not None:
        node_reporter = xml.node_reporter(request.node.nodeid)
        attr_func = node_reporter.add_attribute

    return attr_func


def _check_record_param_type(param, v):
    """Used by record_testsuite_property to check that the given parameter name is of the proper
    type"""
    __tracebackhide__ = True
    if not isinstance(v, str):
        msg = "{param} parameter needs to be a string, but {g} given"
        raise TypeError(msg.format(param=param, g=type(v).__name__))


@pytest.fixture(scope="session")
def record_testsuite_property(request):
    """
    Records a new ``<property>`` tag as child of the root ``<testsuite>``. This is suitable to
    writing global information regarding the entire test suite, and is compatible with ``xunit2`` JUnit family.

    This is a ``session``-scoped fixture which is called with ``(name, value)``. Example:

    .. code-block:: python

        def test_foo(record_testsuite_property):
            record_testsuite_property("ARCH", "PPC")
            record_testsuite_property("STORAGE_TYPE", "CEPH")

    ``name`` must be a string, ``value`` will be converted to a string and properly xml-escaped.
    """

    __tracebackhide__ = True

    def record_func(name, value):
        """noop function in case --junitxml was not passed in the command-line"""
        __tracebackhide__ = True
        _check_record_param_type("name", name)

    xml = getattr(request.config, "_xml", None)
    if xml is not None:
        record_func = xml.add_global_property  # noqa
    return record_func


def pytest_addoption(parser):
    group = parser.getgroup("terminal reporting")
    group.addoption(
        "--junitxml",
        "--junit-xml",
        action="store",
        dest="xmlpath",
        metavar="path",
        type=functools.partial(filename_arg, optname="--junitxml"),
        default=None,
        help="create junit-xml style report file at given path.",
    )
    group.addoption(
        "--junitprefix",
        "--junit-prefix",
        action="store",
        metavar="str",
        default=None,
        help="prepend prefix to classnames in junit-xml output",
    )
    parser.addini(
        "junit_suite_name", "Test suite name for JUnit report", default="pytest"
    )
    parser.addini(
        "junit_logging",
        "Write captured log messages to JUnit report: "
        "one of no|system-out|system-err",
        default="no",
    )  # choices=['no', 'stdout', 'stderr'])
    parser.addini(
        "junit_log_passing_tests",
        "Capture log information for passing tests to JUnit report: ",
        type="bool",
        default=True,
    )
    parser.addini(
        "junit_duration_report",
        "Duration time to report: one of total|call",
        default="total",
    )  # choices=['total', 'call'])
    parser.addini(
        "junit_family", "Emit XML for schema: one of legacy|xunit1|xunit2", default=None
    )


def pytest_configure(config):
    xmlpath = config.option.xmlpath
    # prevent opening xmllog on slave nodes (xdist)
    if xmlpath and not hasattr(config, "slaveinput"):
        junit_family = config.getini("junit_family")
        if not junit_family:
            _issue_warning_captured(deprecated.JUNIT_XML_DEFAULT_FAMILY, config.hook, 2)
            junit_family = "xunit1"
        config._xml = LogXML(
            xmlpath,
            config.option.junitprefix,
            config.getini("junit_suite_name"),
            config.getini("junit_logging"),
            config.getini("junit_duration_report"),
            junit_family,
            config.getini("junit_log_passing_tests"),
        )
        config.pluginmanager.register(config._xml)


def pytest_unconfigure(config):
    xml = getattr(config, "_xml", None)
    if xml:
        del config._xml
        config.pluginmanager.unregister(xml)


def mangle_test_address(address):
    path, possible_open_bracket, params = address.partition("[")
    names = path.split("::")
    try:
        names.remove("()")
    except ValueError:
        pass
    # convert file path to dotted path
    names[0] = names[0].replace(nodes.SEP, ".")
    names[0] = _py_ext_re.sub("", names[0])
    # put any params back
    names[-1] += possible_open_bracket + params
    return names


class LogXML:
    def __init__(
        self,
        logfile,
        prefix,
        suite_name="pytest",
        logging="no",
        report_duration="total",
        family="xunit1",
        log_passing_tests=True,
    ):
        logfile = os.path.expanduser(os.path.expandvars(logfile))
        self.logfile = os.path.normpath(os.path.abspath(logfile))
        self.prefix = prefix
        self.suite_name = suite_name
        self.logging = logging
        self.log_passing_tests = log_passing_tests
        self.report_duration = report_duration
        self.family = family
        self.stats = dict.fromkeys(["error", "passed", "failure", "skipped"], 0)
        self.node_reporters = {}  # nodeid -> _NodeReporter
        self.node_reporters_ordered = []
        self.global_properties = []

        # List of reports that failed on call but teardown is pending.
        self.open_reports = []
        self.cnt_double_fail_tests = 0

        # Replaces convenience family with real family
        if self.family == "legacy":
            self.family = "xunit1"

    def finalize(self, report):
        nodeid = getattr(report, "nodeid", report)
        # local hack to handle xdist report order
        slavenode = getattr(report, "node", None)
        reporter = self.node_reporters.pop((nodeid, slavenode))
        if reporter is not None:
            reporter.finalize()

    def node_reporter(self, report):
        nodeid = getattr(report, "nodeid", report)
        # local hack to handle xdist report order
        slavenode = getattr(report, "node", None)

        key = nodeid, slavenode

        if key in self.node_reporters:
            # TODO: breaks for --dist=each
            return self.node_reporters[key]

        reporter = _NodeReporter(nodeid, self)

        self.node_reporters[key] = reporter
        self.node_reporters_ordered.append(reporter)

        return reporter

    def add_stats(self, key):
        if key in self.stats:
            self.stats[key] += 1

    def _opentestcase(self, report):
        reporter = self.node_reporter(report)
        reporter.record_testreport(report)
        return reporter

    def pytest_runtest_logreport(self, report):
        """handle a setup/call/teardown report, generating the appropriate
        xml tags as necessary.

        note: due to plugins like xdist, this hook may be called in interlaced
        order with reports from other nodes. for example:

        usual call order:
            -> setup node1
            -> call node1
            -> teardown node1
            -> setup node2
            -> call node2
            -> teardown node2

        possible call order in xdist:
            -> setup node1
            -> call node1
            -> setup node2
            -> call node2
            -> teardown node2
            -> teardown node1
        """
        close_report = None
        if report.passed:
            if report.when == "call":  # ignore setup/teardown
                reporter = self._opentestcase(report)
                reporter.append_pass(report)
        elif report.failed:
            if report.when == "teardown":
                # The following vars are needed when xdist plugin is used
                report_wid = getattr(report, "worker_id", None)
                report_ii = getattr(report, "item_index", None)
                close_report = next(
                    (
                        rep
                        for rep in self.open_reports
                        if (
                            rep.nodeid == report.nodeid
                            and getattr(rep, "item_index", None) == report_ii
                            and getattr(rep, "worker_id", None) == report_wid
                        )
                    ),
                    None,
                )
                if close_report:
                    # We need to open new testcase in case we have failure in
                    # call and error in teardown in order to follow junit
                    # schema
                    self.finalize(close_report)
                    self.cnt_double_fail_tests += 1
            reporter = self._opentestcase(report)
            if report.when == "call":
                reporter.append_failure(report)
                self.open_reports.append(report)
                if not self.log_passing_tests:
                    reporter.write_captured_output(report)
            else:
                reporter.append_error(report)
        elif report.skipped:
            reporter = self._opentestcase(report)
            reporter.append_skipped(report)
        self.update_testcase_duration(report)
        if report.when == "teardown":
            reporter = self._opentestcase(report)
            reporter.write_captured_output(report)

            for propname, propvalue in report.user_properties:
                reporter.add_property(propname, propvalue)

            self.finalize(report)
            report_wid = getattr(report, "worker_id", None)
            report_ii = getattr(report, "item_index", None)
            close_report = next(
                (
                    rep
                    for rep in self.open_reports
                    if (
                        rep.nodeid == report.nodeid
                        and getattr(rep, "item_index", None) == report_ii
                        and getattr(rep, "worker_id", None) == report_wid
                    )
                ),
                None,
            )
            if close_report:
                self.open_reports.remove(close_report)

    def update_testcase_duration(self, report):
        """accumulates total duration for nodeid from given report and updates
        the Junit.testcase with the new total if already created.
        """
        if self.report_duration == "total" or report.when == self.report_duration:
            reporter = self.node_reporter(report)
            reporter.duration += getattr(report, "duration", 0.0)

    def pytest_collectreport(self, report):
        if not report.passed:
            reporter = self._opentestcase(report)
            if report.failed:
                reporter.append_collect_error(report)
            else:
                reporter.append_collect_skipped(report)

    def pytest_internalerror(self, excrepr):
        reporter = self.node_reporter("internal")
        reporter.attrs.update(classname="pytest", name="internal")
        reporter._add_simple(Junit.error, "internal error", excrepr)

    def pytest_sessionstart(self):
        self.suite_start_time = time.time()

    def pytest_sessionfinish(self):
        dirname = os.path.dirname(os.path.abspath(self.logfile))
        if not os.path.isdir(dirname):
            os.makedirs(dirname)
        logfile = open(self.logfile, "w", encoding="utf-8")
        suite_stop_time = time.time()
        suite_time_delta = suite_stop_time - self.suite_start_time

        numtests = (
            self.stats["passed"]
            + self.stats["failure"]
            + self.stats["skipped"]
            + self.stats["error"]
            - self.cnt_double_fail_tests
        )
        logfile.write('<?xml version="1.0" encoding="utf-8"?>')

        suite_node = Junit.testsuite(
            self._get_global_properties_node(),
            [x.to_xml() for x in self.node_reporters_ordered],
            name=self.suite_name,
            errors=self.stats["error"],
            failures=self.stats["failure"],
            skipped=self.stats["skipped"],
            tests=numtests,
            time="%.3f" % suite_time_delta,
            timestamp=datetime.fromtimestamp(self.suite_start_time).isoformat(),
            hostname=platform.node(),
        )
        logfile.write(Junit.testsuites([suite_node]).unicode(indent=0))
        logfile.close()

    def pytest_terminal_summary(self, terminalreporter):
        terminalreporter.write_sep("-", "generated xml file: %s" % (self.logfile))

    def add_global_property(self, name, value):
        __tracebackhide__ = True
        _check_record_param_type("name", name)
        self.global_properties.append((name, bin_xml_escape(value)))

    def _get_global_properties_node(self):
        """Return a Junit node containing custom properties, if any.
        """
        if self.global_properties:
            return Junit.properties(
                [
                    Junit.property(name=name, value=value)
                    for name, value in self.global_properties
                ]
            )
        return ""