doctest.py 文件源码

def repr_failure(self, excinfo):
        import doctest
        if excinfo.errisinstance((doctest.DocTestFailure,
                                  doctest.UnexpectedException)):
            doctestfailure = excinfo.value
            example = doctestfailure.example
            test = doctestfailure.test
            filename = test.filename
            if test.lineno is None:
                lineno = None
            else:
                lineno = test.lineno + example.lineno + 1
            message = excinfo.type.__name__
            reprlocation = ReprFileLocation(filename, lineno, message)
            checker = _get_unicode_checker()
            REPORT_UDIFF = doctest.REPORT_UDIFF
            filelines = py.path.local(filename).readlines(cr=0)
            lines = []
            if lineno is not None:
                i = max(test.lineno, max(0, lineno - 10)) # XXX?
                for line in filelines[i:lineno]:
                    lines.append("%03d %s" % (i+1, line))
                    i += 1
            else:
                lines.append('EXAMPLE LOCATION UNKNOWN, not showing all tests of that example')
                indent = '>>>'
                for line in example.source.splitlines():
                    lines.append('??? %s %s' % (indent, line))
                    indent = '...'
            if excinfo.errisinstance(doctest.DocTestFailure):
                lines += checker.output_difference(example,
                        doctestfailure.got, REPORT_UDIFF).split("\n")
            else:
                inner_excinfo = py.code.ExceptionInfo(excinfo.value.exc_info)
                lines += ["UNEXPECTED EXCEPTION: %s" %
                            repr(inner_excinfo.value)]
                lines += traceback.format_exception(*excinfo.value.exc_info)
            return ReprFailDoctest(reprlocation, lines)
        else:
            return super(DoctestItem, self).repr_failure(excinfo)