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How to use pretty method in hypothesis

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pretty_printers.py

Source:pretty_printers.py

1# Pretty-printer commands.2# Copyright (C) 2010-2018 Free Software Foundation, Inc.3# This program is free software; you can redistribute it and/or modify4# it under the terms of the GNU General Public License as published by5# the Free Software Foundation; either version 3 of the License, or6# (at your option) any later version.7#8# This program is distributed in the hope that it will be useful,9# but WITHOUT ANY WARRANTY; without even the implied warranty of10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the11# GNU General Public License for more details.12#13# You should have received a copy of the GNU General Public License14# along with this program.  If not, see <http://www.gnu.org/licenses/>.15"""GDB commands for working with pretty-printers."""16import copy17import gdb18import re19def parse_printer_regexps(arg):20    """Internal utility to parse a pretty-printer command argv.21    Arguments:22        arg: The arguments to the command.  The format is:23             [object-regexp [name-regexp]].24             Individual printers in a collection are named as25             printer-name;subprinter-name.26    Returns:27        The result is a 3-tuple of compiled regular expressions, except that28        the resulting compiled subprinter regexp is None if not provided.29    Raises:30        SyntaxError: an error processing ARG31    """32    argv = gdb.string_to_argv(arg);33    argc = len(argv)34    object_regexp = ""  # match everything35    name_regexp = ""  # match everything36    subname_regexp = None37    if argc > 3:38        raise SyntaxError("too many arguments")39    if argc >= 1:40        object_regexp = argv[0]41    if argc >= 2:42        name_subname = argv[1].split(";", 1)43        name_regexp = name_subname[0]44        if len(name_subname) == 2:45            subname_regexp = name_subname[1]46    # That re.compile raises SyntaxError was determined empirically.47    # We catch it and reraise it to provide a slightly more useful48    # error message for the user.49    try:50        object_re = re.compile(object_regexp)51    except SyntaxError:52        raise SyntaxError("invalid object regexp: %s" % object_regexp)53    try:54        name_re = re.compile (name_regexp)55    except SyntaxError:56        raise SyntaxError("invalid name regexp: %s" % name_regexp)57    if subname_regexp is not None:58        try:59            subname_re = re.compile(subname_regexp)60        except SyntaxError:61            raise SyntaxError("invalid subname regexp: %s" % subname_regexp)62    else:63        subname_re = None64    return(object_re, name_re, subname_re)65def printer_enabled_p(printer):66    """Internal utility to see if printer (or subprinter) is enabled."""67    if hasattr(printer, "enabled"):68        return printer.enabled69    else:70        return True71class InfoPrettyPrinter(gdb.Command):72    """GDB command to list all registered pretty-printers.73    Usage: info pretty-printer [object-regexp [name-regexp]]74    OBJECT-REGEXP is a regular expression matching the objects to list.75    Objects are "global", the program space's file, and the objfiles within76    that program space.77    NAME-REGEXP matches the name of the pretty-printer.78    Individual printers in a collection are named as79    printer-name;subprinter-name.80    """81    def __init__ (self):82        super(InfoPrettyPrinter, self).__init__("info pretty-printer",83                                                 gdb.COMMAND_DATA)84    @staticmethod85    def enabled_string(printer):86        """Return "" if PRINTER is enabled, otherwise " [disabled]"."""87        if printer_enabled_p(printer):88            return ""89        else:90            return " [disabled]"91    @staticmethod92    def printer_name(printer):93        """Return the printer's name."""94        if hasattr(printer, "name"):95            return printer.name96        if hasattr(printer, "__name__"):97            return printer.__name__98        # This "shouldn't happen", but the public API allows for99        # direct additions to the pretty-printer list, and we shouldn't100        # crash because someone added a bogus printer.101        # Plus we want to give the user a way to list unknown printers.102        return "unknown"103    def list_pretty_printers(self, pretty_printers, name_re, subname_re):104        """Print a list of pretty-printers."""105        # A potential enhancement is to provide an option to list printers in106        # "lookup order" (i.e. unsorted).107        sorted_pretty_printers = sorted (copy.copy(pretty_printers),108                                         key = self.printer_name)109        for printer in sorted_pretty_printers:110            name = self.printer_name(printer)111            enabled = self.enabled_string(printer)112            if name_re.match(name):113                print ("  %s%s" % (name, enabled))114                if (hasattr(printer, "subprinters") and115                    printer.subprinters is not None):116                    sorted_subprinters = sorted (copy.copy(printer.subprinters),117                                                 key = self.printer_name)118                    for subprinter in sorted_subprinters:119                        if (not subname_re or120                            subname_re.match(subprinter.name)):121                            print ("    %s%s" %122                                   (subprinter.name,123                                    self.enabled_string(subprinter)))124    def invoke1(self, title, printer_list,125                obj_name_to_match, object_re, name_re, subname_re):126        """Subroutine of invoke to simplify it."""127        if printer_list and object_re.match(obj_name_to_match):128            print (title)129            self.list_pretty_printers(printer_list, name_re, subname_re)130    def invoke(self, arg, from_tty):131        """GDB calls this to perform the command."""132        (object_re, name_re, subname_re) = parse_printer_regexps(arg)133        self.invoke1("global pretty-printers:", gdb.pretty_printers,134                     "global", object_re, name_re, subname_re)135        cp = gdb.current_progspace()136        self.invoke1("progspace %s pretty-printers:" % cp.filename,137                     cp.pretty_printers, "progspace",138                     object_re, name_re, subname_re)139        for objfile in gdb.objfiles():140            self.invoke1("  objfile %s pretty-printers:" % objfile.filename,141                         objfile.pretty_printers, objfile.filename,142                         object_re, name_re, subname_re)143def count_enabled_printers(pretty_printers):144    """Return a 2-tuple of number of enabled and total printers."""145    enabled = 0146    total = 0147    for printer in pretty_printers:148        if (hasattr(printer, "subprinters")149            and printer.subprinters is not None):150            if printer_enabled_p(printer):151                for subprinter in printer.subprinters:152                    if printer_enabled_p(subprinter):153                        enabled += 1154            total += len(printer.subprinters)155        else:156            if printer_enabled_p(printer):157                enabled += 1158            total += 1159    return (enabled, total)160def count_all_enabled_printers():161    """Return a 2-tuble of the enabled state and total number of all printers.162    This includes subprinters.163    """164    enabled_count = 0165    total_count = 0166    (t_enabled, t_total) = count_enabled_printers(gdb.pretty_printers)167    enabled_count += t_enabled168    total_count += t_total169    (t_enabled, t_total) = count_enabled_printers(gdb.current_progspace().pretty_printers)170    enabled_count += t_enabled171    total_count += t_total172    for objfile in gdb.objfiles():173        (t_enabled, t_total) = count_enabled_printers(objfile.pretty_printers)174        enabled_count += t_enabled175        total_count += t_total176    return (enabled_count, total_count)177def pluralize(text, n, suffix="s"):178    """Return TEXT pluralized if N != 1."""179    if n != 1:180        return "%s%s" % (text, suffix)181    else:182        return text183def show_pretty_printer_enabled_summary():184    """Print the number of printers enabled/disabled.185    We count subprinters individually.186    """187    (enabled_count, total_count) = count_all_enabled_printers()188    print ("%d of %d printers enabled" % (enabled_count, total_count))189def do_enable_pretty_printer_1 (pretty_printers, name_re, subname_re, flag):190    """Worker for enabling/disabling pretty-printers.191    Arguments:192        pretty_printers: list of pretty-printers193        name_re: regular-expression object to select printers194        subname_re: regular expression object to select subprinters or None195                    if all are affected196        flag: True for Enable, False for Disable197    Returns:198        The number of printers affected.199        This is just for informational purposes for the user.200    """201    total = 0202    for printer in pretty_printers:203        if (hasattr(printer, "name") and name_re.match(printer.name) or204            hasattr(printer, "__name__") and name_re.match(printer.__name__)):205            if (hasattr(printer, "subprinters") and206                printer.subprinters is not None):207                if not subname_re:208                    # Only record printers that change state.209                    if printer_enabled_p(printer) != flag:210                        for subprinter in printer.subprinters:211                            if printer_enabled_p(subprinter):212                                total += 1213                    # NOTE: We preserve individual subprinter settings.214                    printer.enabled = flag215                else:216                    # NOTE: Whether this actually disables the subprinter217                    # depends on whether the printer's lookup function supports218                    # the "enable" API.  We can only assume it does.219                    for subprinter in printer.subprinters:220                        if subname_re.match(subprinter.name):221                            # Only record printers that change state.222                           if (printer_enabled_p(printer) and223                               printer_enabled_p(subprinter) != flag):224                               total += 1225                           subprinter.enabled = flag226            else:227                # This printer has no subprinters.228                # If the user does "disable pretty-printer .* .* foo"229                # should we disable printers that don't have subprinters?230                # How do we apply "foo" in this context?  Since there is no231                # "foo" subprinter it feels like we should skip this printer.232                # There's still the issue of how to handle233                # "disable pretty-printer .* .* .*", and every other variation234                # that can match everything.  For now punt and only support235                # "disable pretty-printer .* .*" (i.e. subname is elided)236                # to disable everything.237                if not subname_re:238                    # Only record printers that change state.239                    if printer_enabled_p(printer) != flag:240                        total += 1241                    printer.enabled = flag242    return total243def do_enable_pretty_printer (arg, flag):244    """Internal worker for enabling/disabling pretty-printers."""245    (object_re, name_re, subname_re) = parse_printer_regexps(arg)246    total = 0247    if object_re.match("global"):248        total += do_enable_pretty_printer_1(gdb.pretty_printers,249                                            name_re, subname_re, flag)250    cp = gdb.current_progspace()251    if object_re.match("progspace"):252        total += do_enable_pretty_printer_1(cp.pretty_printers,253                                            name_re, subname_re, flag)254    for objfile in gdb.objfiles():255        if object_re.match(objfile.filename):256            total += do_enable_pretty_printer_1(objfile.pretty_printers,257                                                name_re, subname_re, flag)258    if flag:259        state = "enabled"260    else:261        state = "disabled"262    print ("%d %s %s" % (total, pluralize("printer", total), state))263    # Print the total list of printers currently enabled/disabled.264    # This is to further assist the user in determining whether the result265    # is expected.  Since we use regexps to select it's useful.266    show_pretty_printer_enabled_summary()267# Enable/Disable one or more pretty-printers.268#269# This is intended for use when a broken pretty-printer is shipped/installed270# and the user wants to disable that printer without disabling all the other271# printers.272#273# A useful addition would be -v (verbose) to show each printer affected.274class EnablePrettyPrinter (gdb.Command):275    """GDB command to enable the specified pretty-printer.276    Usage: enable pretty-printer [object-regexp [name-regexp]]277    OBJECT-REGEXP is a regular expression matching the objects to examine.278    Objects are "global", the program space's file, and the objfiles within279    that program space.280    NAME-REGEXP matches the name of the pretty-printer.281    Individual printers in a collection are named as282    printer-name;subprinter-name.283    """284    def __init__(self):285        super(EnablePrettyPrinter, self).__init__("enable pretty-printer",286                                                   gdb.COMMAND_DATA)287    def invoke(self, arg, from_tty):288        """GDB calls this to perform the command."""289        do_enable_pretty_printer(arg, True)290class DisablePrettyPrinter (gdb.Command):291    """GDB command to disable the specified pretty-printer.292    Usage: disable pretty-printer [object-regexp [name-regexp]]293    OBJECT-REGEXP is a regular expression matching the objects to examine.294    Objects are "global", the program space's file, and the objfiles within295    that program space.296    NAME-REGEXP matches the name of the pretty-printer.297    Individual printers in a collection are named as298    printer-name;subprinter-name.299    """300    def __init__(self):301        super(DisablePrettyPrinter, self).__init__("disable pretty-printer",302                                                   gdb.COMMAND_DATA)303    def invoke(self, arg, from_tty):304        """GDB calls this to perform the command."""305        do_enable_pretty_printer(arg, False)306def register_pretty_printer_commands():307    """Call from a top level script to install the pretty-printer commands."""308    InfoPrettyPrinter()309    EnablePrettyPrinter()310    DisablePrettyPrinter()...

test_pretty.py

Source:test_pretty.py

...24                        p.text(",")25                        p.breakable()26                    else:27                        p.breakable("")28                    p.pretty(child)29class MyDict(dict):30    def _repr_pretty_(self, p, cycle):31        p.text("MyDict(...)")32class MyObj(object):33    def somemethod(self):34        pass35class Dummy1(object):36    def _repr_pretty_(self, p, cycle):37        p.text("Dummy1(...)")38class Dummy2(Dummy1):39    _repr_pretty_ = None40class NoModule(object):41    pass42NoModule.__module__ = None43class Breaking(object):44    def _repr_pretty_(self, p, cycle):45        with p.group(4,"TG: ",":"):46            p.text("Breaking(")47            p.break_()48            p.text(")")49class BreakingRepr(object):50    def __repr__(self):51        return "Breaking(\n)"52class BadRepr(object):53    54    def __repr__(self):55        return 1/056def test_indentation():57    """Test correct indentation in groups"""58    count = 4059    gotoutput = pretty.pretty(MyList(range(count)))60    expectedoutput = "MyList(\n" + ",\n".join("   %d" % i for i in range(count)) + ")"61    nt.assert_equal(gotoutput, expectedoutput)62def test_dispatch():63    """64    Test correct dispatching: The _repr_pretty_ method for MyDict65    must be found before the registered printer for dict.66    """67    gotoutput = pretty.pretty(MyDict())68    expectedoutput = "MyDict(...)"69    nt.assert_equal(gotoutput, expectedoutput)70def test_callability_checking():71    """72    Test that the _repr_pretty_ method is tested for callability and skipped if73    not.74    """75    gotoutput = pretty.pretty(Dummy2())76    expectedoutput = "Dummy1(...)"77    nt.assert_equal(gotoutput, expectedoutput)78def test_sets():79    """80    Test that set and frozenset use Python 3 formatting.81    """82    objects = [set(), frozenset(), set([1]), frozenset([1]), set([1, 2]),83        frozenset([1, 2]), set([-1, -2, -3])]84    expected = ['set()', 'frozenset()', '{1}', 'frozenset({1})', '{1, 2}',85        'frozenset({1, 2})', '{-3, -2, -1}']86    for obj, expected_output in zip(objects, expected):87        got_output = pretty.pretty(obj)88        yield nt.assert_equal, got_output, expected_output89@skip_without('xxlimited')90def test_pprint_heap_allocated_type():91    """92    Test that pprint works for heap allocated types.93    """94    import xxlimited95    output = pretty.pretty(xxlimited.Null)96    nt.assert_equal(output, 'xxlimited.Null')97def test_pprint_nomod():98    """99    Test that pprint works for classes with no __module__.100    """101    output = pretty.pretty(NoModule)102    nt.assert_equal(output, 'NoModule')103    104def test_pprint_break():105    """106    Test that p.break_ produces expected output107    """108    output = pretty.pretty(Breaking())109    expected = "TG: Breaking(\n    ):"110    nt.assert_equal(output, expected)111def test_pprint_break_repr():112    """113    Test that p.break_ is used in repr114    """115    output = pretty.pretty([[BreakingRepr()]])116    expected = "[[Breaking(\n  )]]"117    nt.assert_equal(output, expected)118    output = pretty.pretty([[BreakingRepr()]*2])119    expected = "[[Breaking(\n  ),\n  Breaking(\n  )]]"120    nt.assert_equal(output, expected)121def test_bad_repr():122    """Don't catch bad repr errors"""123    with nt.assert_raises(ZeroDivisionError):124        pretty.pretty(BadRepr())125class BadException(Exception):126    def __str__(self):127        return -1128class ReallyBadRepr(object):129    __module__ = 1130    @property131    def __class__(self):132        raise ValueError("I am horrible")133    134    def __repr__(self):135        raise BadException()136def test_really_bad_repr():137    with nt.assert_raises(BadException):138        pretty.pretty(ReallyBadRepr())139class SA(object):140    pass141class SB(SA):142    pass143class TestsPretty(unittest.TestCase):144    def test_super_repr(self):145        # "<super: module_name.SA, None>"146        output = pretty.pretty(super(SA))147        self.assertRegex(output, r"<super: \S+.SA, None>")148        # "<super: module_name.SA, <module_name.SB at 0x...>>"149        sb = SB()150        output = pretty.pretty(super(SA, sb))151        self.assertRegex(output, r"<super: \S+.SA,\s+<\S+.SB at 0x\S+>>")152    def test_long_list(self):153        lis = list(range(10000))154        p = pretty.pretty(lis)155        last2 = p.rsplit('\n', 2)[-2:]156        self.assertEqual(last2, [' 999,', ' ...]'])157    def test_long_set(self):158        s = set(range(10000))159        p = pretty.pretty(s)160        last2 = p.rsplit('\n', 2)[-2:]161        self.assertEqual(last2, [' 999,', ' ...}'])162    def test_long_tuple(self):163        tup = tuple(range(10000))164        p = pretty.pretty(tup)165        last2 = p.rsplit('\n', 2)[-2:]166        self.assertEqual(last2, [' 999,', ' ...)'])167    def test_long_dict(self):168        d = { n:n for n in range(10000) }169        p = pretty.pretty(d)170        last2 = p.rsplit('\n', 2)[-2:]171        self.assertEqual(last2, [' 999: 999,', ' ...}'])172    def test_unbound_method(self):173        output = pretty.pretty(MyObj.somemethod)174        self.assertIn('MyObj.somemethod', output)175class MetaClass(type):176    def __new__(cls, name):177        return type.__new__(cls, name, (object,), {'name': name})178    def __repr__(self):179        return "[CUSTOM REPR FOR CLASS %s]" % self.name180ClassWithMeta = MetaClass('ClassWithMeta')181def test_metaclass_repr():182    output = pretty.pretty(ClassWithMeta)183    nt.assert_equal(output, "[CUSTOM REPR FOR CLASS ClassWithMeta]")184def test_unicode_repr():185    u = u"Ã¼niÃ§odÃ©"186    ustr = u187    188    class C(object):189        def __repr__(self):190            return ustr191    192    c = C()193    p = pretty.pretty(c)194    nt.assert_equal(p, u)195    p = pretty.pretty([c])196    nt.assert_equal(p, u'[%s]' % u)197def test_basic_class():198    def type_pprint_wrapper(obj, p, cycle):199        if obj is MyObj:200            type_pprint_wrapper.called = True201        return pretty._type_pprint(obj, p, cycle)202    type_pprint_wrapper.called = False203    stream = StringIO()204    printer = pretty.RepresentationPrinter(stream)205    printer.type_pprinters[type] = type_pprint_wrapper206    printer.pretty(MyObj)207    printer.flush()208    output = stream.getvalue()209    nt.assert_equal(output, '%s.MyObj' % __name__)210    nt.assert_true(type_pprint_wrapper.called)211def test_collections_defaultdict():212    # Create defaultdicts with cycles213    a = defaultdict()214    a.default_factory = a215    b = defaultdict(list)216    b['key'] = b217    # Dictionary order cannot be relied on, test against single keys.218    cases = [219        (defaultdict(list), 'defaultdict(list, {})'),220        (defaultdict(list, {'key': '-' * 50}),221         "defaultdict(list,\n"222         "            {'key': '--------------------------------------------------'})"),223        (a, 'defaultdict(defaultdict(...), {})'),224        (b, "defaultdict(list, {'key': defaultdict(...)})"),225    ]226    for obj, expected in cases:227        nt.assert_equal(pretty.pretty(obj), expected)228def test_collections_ordereddict():229    # Create OrderedDict with cycle230    a = OrderedDict()231    a['key'] = a232    cases = [233        (OrderedDict(), 'OrderedDict()'),234        (OrderedDict((i, i) for i in range(1000, 1010)),235         'OrderedDict([(1000, 1000),\n'236         '             (1001, 1001),\n'237         '             (1002, 1002),\n'238         '             (1003, 1003),\n'239         '             (1004, 1004),\n'240         '             (1005, 1005),\n'241         '             (1006, 1006),\n'242         '             (1007, 1007),\n'243         '             (1008, 1008),\n'244         '             (1009, 1009)])'),245        (a, "OrderedDict([('key', OrderedDict(...))])"),246    ]247    for obj, expected in cases:248        nt.assert_equal(pretty.pretty(obj), expected)249def test_collections_deque():250    # Create deque with cycle251    a = deque()252    a.append(a)253    cases = [254        (deque(), 'deque([])'),255        (deque(i for i in range(1000, 1020)),256         'deque([1000,\n'257         '       1001,\n'258         '       1002,\n'259         '       1003,\n'260         '       1004,\n'261         '       1005,\n'262         '       1006,\n'263         '       1007,\n'264         '       1008,\n'265         '       1009,\n'266         '       1010,\n'267         '       1011,\n'268         '       1012,\n'269         '       1013,\n'270         '       1014,\n'271         '       1015,\n'272         '       1016,\n'273         '       1017,\n'274         '       1018,\n'275         '       1019])'),276        (a, 'deque([deque(...)])'),277    ]278    for obj, expected in cases:279        nt.assert_equal(pretty.pretty(obj), expected)280def test_collections_counter():281    class MyCounter(Counter):282        pass283    cases = [284        (Counter(), 'Counter()'),285        (Counter(a=1), "Counter({'a': 1})"),286        (MyCounter(a=1), "MyCounter({'a': 1})"),287    ]288    for obj, expected in cases:289        nt.assert_equal(pretty.pretty(obj), expected)290def test_mappingproxy():291    MP = types.MappingProxyType292    underlying_dict = {}293    mp_recursive = MP(underlying_dict)294    underlying_dict[2] = mp_recursive295    underlying_dict[3] = underlying_dict296    cases = [297        (MP({}), "mappingproxy({})"),298        (MP({None: MP({})}), "mappingproxy({None: mappingproxy({})})"),299        (MP({k: k.upper() for k in string.ascii_lowercase}),300         "mappingproxy({'a': 'A',\n"301         "              'b': 'B',\n"302         "              'c': 'C',\n"303         "              'd': 'D',\n"304         "              'e': 'E',\n"305         "              'f': 'F',\n"306         "              'g': 'G',\n"307         "              'h': 'H',\n"308         "              'i': 'I',\n"309         "              'j': 'J',\n"310         "              'k': 'K',\n"311         "              'l': 'L',\n"312         "              'm': 'M',\n"313         "              'n': 'N',\n"314         "              'o': 'O',\n"315         "              'p': 'P',\n"316         "              'q': 'Q',\n"317         "              'r': 'R',\n"318         "              's': 'S',\n"319         "              't': 'T',\n"320         "              'u': 'U',\n"321         "              'v': 'V',\n"322         "              'w': 'W',\n"323         "              'x': 'X',\n"324         "              'y': 'Y',\n"325         "              'z': 'Z'})"),326        (mp_recursive, "mappingproxy({2: {...}, 3: {2: {...}, 3: {...}}})"),327        (underlying_dict,328         "{2: mappingproxy({2: {...}, 3: {...}}), 3: {...}}"),329    ]330    for obj, expected in cases:331        nt.assert_equal(pretty.pretty(obj), expected)332def test_simplenamespace():333    SN = types.SimpleNamespace334    sn_recursive = SN()335    sn_recursive.first = sn_recursive336    sn_recursive.second = sn_recursive337    cases = [338        (SN(), "namespace()"),339        (SN(x=SN()), "namespace(x=namespace())"),340        (SN(a_long_name=[SN(s=string.ascii_lowercase)]*3, a_short_name=None),341         "namespace(a_long_name=[namespace(s='abcdefghijklmnopqrstuvwxyz'),\n"342         "                       namespace(s='abcdefghijklmnopqrstuvwxyz'),\n"343         "                       namespace(s='abcdefghijklmnopqrstuvwxyz')],\n"344         "          a_short_name=None)"),345        (sn_recursive, "namespace(first=namespace(...), second=namespace(...))"),346    ]347    for obj, expected in cases:348        nt.assert_equal(pretty.pretty(obj), expected)349def test_pretty_environ():350    dict_repr = pretty.pretty(dict(os.environ))351    # reindent to align with 'environ' prefix352    dict_indented = dict_repr.replace('\n', '\n' + (' ' * len('environ')))353    env_repr = pretty.pretty(os.environ)354    nt.assert_equal(env_repr, 'environ' + dict_indented)355def test_function_pretty():356    "Test pretty print of function"357    # posixpath is a pure python module, its interface is consistent358    # across Python distributions359    import posixpath360    nt.assert_equal(pretty.pretty(posixpath.join), '<function posixpath.join(a, *p)>')361 362    # custom function363    def meaning_of_life(question=None):364        if question:365            return 42366        return "Don't panic"367    nt.assert_in('meaning_of_life(question=None)', pretty.pretty(meaning_of_life))368class OrderedCounter(Counter, OrderedDict):369    'Counter that remembers the order elements are first encountered'370    def __repr__(self):371        return '%s(%r)' % (self.__class__.__name__, OrderedDict(self))372    def __reduce__(self):373        return self.__class__, (OrderedDict(self),)374class MySet(set):  # Override repr of a basic type375    def __repr__(self):376        return 'mine'377def test_custom_repr():378    """A custom repr should override a pretty printer for a parent type"""379    oc = OrderedCounter("abracadabra")380    nt.assert_in("OrderedCounter(OrderedDict", pretty.pretty(oc))...

Automation Testing Tutorials

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