|
|
# coding: utf-8
|
|
|
"""Tests for IPython.lib.pretty."""
|
|
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
|
|
|
|
|
from collections import Counter, defaultdict, deque, OrderedDict
|
|
|
import types
|
|
|
import string
|
|
|
import unittest
|
|
|
|
|
|
import nose.tools as nt
|
|
|
|
|
|
from IPython.lib import pretty
|
|
|
from IPython.testing.decorators import skip_without
|
|
|
|
|
|
from io import StringIO
|
|
|
|
|
|
|
|
|
class MyList(object):
|
|
|
def __init__(self, content):
|
|
|
self.content = content
|
|
|
def _repr_pretty_(self, p, cycle):
|
|
|
if cycle:
|
|
|
p.text("MyList(...)")
|
|
|
else:
|
|
|
with p.group(3, "MyList(", ")"):
|
|
|
for (i, child) in enumerate(self.content):
|
|
|
if i:
|
|
|
p.text(",")
|
|
|
p.breakable()
|
|
|
else:
|
|
|
p.breakable("")
|
|
|
p.pretty(child)
|
|
|
|
|
|
|
|
|
class MyDict(dict):
|
|
|
def _repr_pretty_(self, p, cycle):
|
|
|
p.text("MyDict(...)")
|
|
|
|
|
|
class MyObj(object):
|
|
|
def somemethod(self):
|
|
|
pass
|
|
|
|
|
|
|
|
|
class Dummy1(object):
|
|
|
def _repr_pretty_(self, p, cycle):
|
|
|
p.text("Dummy1(...)")
|
|
|
|
|
|
class Dummy2(Dummy1):
|
|
|
_repr_pretty_ = None
|
|
|
|
|
|
class NoModule(object):
|
|
|
pass
|
|
|
|
|
|
NoModule.__module__ = None
|
|
|
|
|
|
class Breaking(object):
|
|
|
def _repr_pretty_(self, p, cycle):
|
|
|
with p.group(4,"TG: ",":"):
|
|
|
p.text("Breaking(")
|
|
|
p.break_()
|
|
|
p.text(")")
|
|
|
|
|
|
class BreakingRepr(object):
|
|
|
def __repr__(self):
|
|
|
return "Breaking(\n)"
|
|
|
|
|
|
class BreakingReprParent(object):
|
|
|
def _repr_pretty_(self, p, cycle):
|
|
|
with p.group(4,"TG: ",":"):
|
|
|
p.pretty(BreakingRepr())
|
|
|
|
|
|
class BadRepr(object):
|
|
|
|
|
|
def __repr__(self):
|
|
|
return 1/0
|
|
|
|
|
|
|
|
|
def test_indentation():
|
|
|
"""Test correct indentation in groups"""
|
|
|
count = 40
|
|
|
gotoutput = pretty.pretty(MyList(range(count)))
|
|
|
expectedoutput = "MyList(\n" + ",\n".join(" %d" % i for i in range(count)) + ")"
|
|
|
|
|
|
nt.assert_equal(gotoutput, expectedoutput)
|
|
|
|
|
|
|
|
|
def test_dispatch():
|
|
|
"""
|
|
|
Test correct dispatching: The _repr_pretty_ method for MyDict
|
|
|
must be found before the registered printer for dict.
|
|
|
"""
|
|
|
gotoutput = pretty.pretty(MyDict())
|
|
|
expectedoutput = "MyDict(...)"
|
|
|
|
|
|
nt.assert_equal(gotoutput, expectedoutput)
|
|
|
|
|
|
|
|
|
def test_callability_checking():
|
|
|
"""
|
|
|
Test that the _repr_pretty_ method is tested for callability and skipped if
|
|
|
not.
|
|
|
"""
|
|
|
gotoutput = pretty.pretty(Dummy2())
|
|
|
expectedoutput = "Dummy1(...)"
|
|
|
|
|
|
nt.assert_equal(gotoutput, expectedoutput)
|
|
|
|
|
|
|
|
|
def test_sets():
|
|
|
"""
|
|
|
Test that set and frozenset use Python 3 formatting.
|
|
|
"""
|
|
|
objects = [set(), frozenset(), set([1]), frozenset([1]), set([1, 2]),
|
|
|
frozenset([1, 2]), set([-1, -2, -3])]
|
|
|
expected = ['set()', 'frozenset()', '{1}', 'frozenset({1})', '{1, 2}',
|
|
|
'frozenset({1, 2})', '{-3, -2, -1}']
|
|
|
for obj, expected_output in zip(objects, expected):
|
|
|
got_output = pretty.pretty(obj)
|
|
|
yield nt.assert_equal, got_output, expected_output
|
|
|
|
|
|
|
|
|
@skip_without('xxlimited')
|
|
|
def test_pprint_heap_allocated_type():
|
|
|
"""
|
|
|
Test that pprint works for heap allocated types.
|
|
|
"""
|
|
|
import xxlimited
|
|
|
output = pretty.pretty(xxlimited.Null)
|
|
|
nt.assert_equal(output, 'xxlimited.Null')
|
|
|
|
|
|
def test_pprint_nomod():
|
|
|
"""
|
|
|
Test that pprint works for classes with no __module__.
|
|
|
"""
|
|
|
output = pretty.pretty(NoModule)
|
|
|
nt.assert_equal(output, 'NoModule')
|
|
|
|
|
|
def test_pprint_break():
|
|
|
"""
|
|
|
Test that p.break_ produces expected output
|
|
|
"""
|
|
|
output = pretty.pretty(Breaking())
|
|
|
expected = "TG: Breaking(\n ):"
|
|
|
nt.assert_equal(output, expected)
|
|
|
|
|
|
def test_pprint_break_repr():
|
|
|
"""
|
|
|
Test that p.break_ is used in repr
|
|
|
"""
|
|
|
output = pretty.pretty(BreakingReprParent())
|
|
|
expected = "TG: Breaking(\n ):"
|
|
|
nt.assert_equal(output, expected)
|
|
|
|
|
|
def test_bad_repr():
|
|
|
"""Don't catch bad repr errors"""
|
|
|
with nt.assert_raises(ZeroDivisionError):
|
|
|
pretty.pretty(BadRepr())
|
|
|
|
|
|
class BadException(Exception):
|
|
|
def __str__(self):
|
|
|
return -1
|
|
|
|
|
|
class ReallyBadRepr(object):
|
|
|
__module__ = 1
|
|
|
@property
|
|
|
def __class__(self):
|
|
|
raise ValueError("I am horrible")
|
|
|
|
|
|
def __repr__(self):
|
|
|
raise BadException()
|
|
|
|
|
|
def test_really_bad_repr():
|
|
|
with nt.assert_raises(BadException):
|
|
|
pretty.pretty(ReallyBadRepr())
|
|
|
|
|
|
|
|
|
class SA(object):
|
|
|
pass
|
|
|
|
|
|
class SB(SA):
|
|
|
pass
|
|
|
|
|
|
class TestsPretty(unittest.TestCase):
|
|
|
|
|
|
def test_super_repr(self):
|
|
|
# "<super: module_name.SA, None>"
|
|
|
output = pretty.pretty(super(SA))
|
|
|
self.assertRegex(output, r"<super: \S+.SA, None>")
|
|
|
|
|
|
# "<super: module_name.SA, <module_name.SB at 0x...>>"
|
|
|
sb = SB()
|
|
|
output = pretty.pretty(super(SA, sb))
|
|
|
self.assertRegex(output, r"<super: \S+.SA,\s+<\S+.SB at 0x\S+>>")
|
|
|
|
|
|
|
|
|
def test_long_list(self):
|
|
|
lis = list(range(10000))
|
|
|
p = pretty.pretty(lis)
|
|
|
last2 = p.rsplit('\n', 2)[-2:]
|
|
|
self.assertEqual(last2, [' 999,', ' ...]'])
|
|
|
|
|
|
def test_long_set(self):
|
|
|
s = set(range(10000))
|
|
|
p = pretty.pretty(s)
|
|
|
last2 = p.rsplit('\n', 2)[-2:]
|
|
|
self.assertEqual(last2, [' 999,', ' ...}'])
|
|
|
|
|
|
def test_long_tuple(self):
|
|
|
tup = tuple(range(10000))
|
|
|
p = pretty.pretty(tup)
|
|
|
last2 = p.rsplit('\n', 2)[-2:]
|
|
|
self.assertEqual(last2, [' 999,', ' ...)'])
|
|
|
|
|
|
def test_long_dict(self):
|
|
|
d = { n:n for n in range(10000) }
|
|
|
p = pretty.pretty(d)
|
|
|
last2 = p.rsplit('\n', 2)[-2:]
|
|
|
self.assertEqual(last2, [' 999: 999,', ' ...}'])
|
|
|
|
|
|
def test_unbound_method(self):
|
|
|
output = pretty.pretty(MyObj.somemethod)
|
|
|
self.assertIn('MyObj.somemethod', output)
|
|
|
|
|
|
|
|
|
class MetaClass(type):
|
|
|
def __new__(cls, name):
|
|
|
return type.__new__(cls, name, (object,), {'name': name})
|
|
|
|
|
|
def __repr__(self):
|
|
|
return "[CUSTOM REPR FOR CLASS %s]" % self.name
|
|
|
|
|
|
|
|
|
ClassWithMeta = MetaClass('ClassWithMeta')
|
|
|
|
|
|
|
|
|
def test_metaclass_repr():
|
|
|
output = pretty.pretty(ClassWithMeta)
|
|
|
nt.assert_equal(output, "[CUSTOM REPR FOR CLASS ClassWithMeta]")
|
|
|
|
|
|
|
|
|
def test_unicode_repr():
|
|
|
u = u"üniçodé"
|
|
|
ustr = u
|
|
|
|
|
|
class C(object):
|
|
|
def __repr__(self):
|
|
|
return ustr
|
|
|
|
|
|
c = C()
|
|
|
p = pretty.pretty(c)
|
|
|
nt.assert_equal(p, u)
|
|
|
p = pretty.pretty([c])
|
|
|
nt.assert_equal(p, u'[%s]' % u)
|
|
|
|
|
|
|
|
|
def test_basic_class():
|
|
|
def type_pprint_wrapper(obj, p, cycle):
|
|
|
if obj is MyObj:
|
|
|
type_pprint_wrapper.called = True
|
|
|
return pretty._type_pprint(obj, p, cycle)
|
|
|
type_pprint_wrapper.called = False
|
|
|
|
|
|
stream = StringIO()
|
|
|
printer = pretty.RepresentationPrinter(stream)
|
|
|
printer.type_pprinters[type] = type_pprint_wrapper
|
|
|
printer.pretty(MyObj)
|
|
|
printer.flush()
|
|
|
output = stream.getvalue()
|
|
|
|
|
|
nt.assert_equal(output, '%s.MyObj' % __name__)
|
|
|
nt.assert_true(type_pprint_wrapper.called)
|
|
|
|
|
|
|
|
|
def test_collections_defaultdict():
|
|
|
# Create defaultdicts with cycles
|
|
|
a = defaultdict()
|
|
|
a.default_factory = a
|
|
|
b = defaultdict(list)
|
|
|
b['key'] = b
|
|
|
|
|
|
# Dictionary order cannot be relied on, test against single keys.
|
|
|
cases = [
|
|
|
(defaultdict(list), 'defaultdict(list, {})'),
|
|
|
(defaultdict(list, {'key': '-' * 50}),
|
|
|
"defaultdict(list,\n"
|
|
|
" {'key': '--------------------------------------------------'})"),
|
|
|
(a, 'defaultdict(defaultdict(...), {})'),
|
|
|
(b, "defaultdict(list, {'key': defaultdict(...)})"),
|
|
|
]
|
|
|
for obj, expected in cases:
|
|
|
nt.assert_equal(pretty.pretty(obj), expected)
|
|
|
|
|
|
|
|
|
def test_collections_ordereddict():
|
|
|
# Create OrderedDict with cycle
|
|
|
a = OrderedDict()
|
|
|
a['key'] = a
|
|
|
|
|
|
cases = [
|
|
|
(OrderedDict(), 'OrderedDict()'),
|
|
|
(OrderedDict((i, i) for i in range(1000, 1010)),
|
|
|
'OrderedDict([(1000, 1000),\n'
|
|
|
' (1001, 1001),\n'
|
|
|
' (1002, 1002),\n'
|
|
|
' (1003, 1003),\n'
|
|
|
' (1004, 1004),\n'
|
|
|
' (1005, 1005),\n'
|
|
|
' (1006, 1006),\n'
|
|
|
' (1007, 1007),\n'
|
|
|
' (1008, 1008),\n'
|
|
|
' (1009, 1009)])'),
|
|
|
(a, "OrderedDict([('key', OrderedDict(...))])"),
|
|
|
]
|
|
|
for obj, expected in cases:
|
|
|
nt.assert_equal(pretty.pretty(obj), expected)
|
|
|
|
|
|
|
|
|
def test_collections_deque():
|
|
|
# Create deque with cycle
|
|
|
a = deque()
|
|
|
a.append(a)
|
|
|
|
|
|
cases = [
|
|
|
(deque(), 'deque([])'),
|
|
|
(deque(i for i in range(1000, 1020)),
|
|
|
'deque([1000,\n'
|
|
|
' 1001,\n'
|
|
|
' 1002,\n'
|
|
|
' 1003,\n'
|
|
|
' 1004,\n'
|
|
|
' 1005,\n'
|
|
|
' 1006,\n'
|
|
|
' 1007,\n'
|
|
|
' 1008,\n'
|
|
|
' 1009,\n'
|
|
|
' 1010,\n'
|
|
|
' 1011,\n'
|
|
|
' 1012,\n'
|
|
|
' 1013,\n'
|
|
|
' 1014,\n'
|
|
|
' 1015,\n'
|
|
|
' 1016,\n'
|
|
|
' 1017,\n'
|
|
|
' 1018,\n'
|
|
|
' 1019])'),
|
|
|
(a, 'deque([deque(...)])'),
|
|
|
]
|
|
|
for obj, expected in cases:
|
|
|
nt.assert_equal(pretty.pretty(obj), expected)
|
|
|
|
|
|
def test_collections_counter():
|
|
|
class MyCounter(Counter):
|
|
|
pass
|
|
|
cases = [
|
|
|
(Counter(), 'Counter()'),
|
|
|
(Counter(a=1), "Counter({'a': 1})"),
|
|
|
(MyCounter(a=1), "MyCounter({'a': 1})"),
|
|
|
]
|
|
|
for obj, expected in cases:
|
|
|
nt.assert_equal(pretty.pretty(obj), expected)
|
|
|
|
|
|
def test_mappingproxy():
|
|
|
MP = types.MappingProxyType
|
|
|
underlying_dict = {}
|
|
|
mp_recursive = MP(underlying_dict)
|
|
|
underlying_dict[2] = mp_recursive
|
|
|
underlying_dict[3] = underlying_dict
|
|
|
|
|
|
cases = [
|
|
|
(MP({}), "mappingproxy({})"),
|
|
|
(MP({None: MP({})}), "mappingproxy({None: mappingproxy({})})"),
|
|
|
(MP({k: k.upper() for k in string.ascii_lowercase}),
|
|
|
"mappingproxy({'a': 'A',\n"
|
|
|
" 'b': 'B',\n"
|
|
|
" 'c': 'C',\n"
|
|
|
" 'd': 'D',\n"
|
|
|
" 'e': 'E',\n"
|
|
|
" 'f': 'F',\n"
|
|
|
" 'g': 'G',\n"
|
|
|
" 'h': 'H',\n"
|
|
|
" 'i': 'I',\n"
|
|
|
" 'j': 'J',\n"
|
|
|
" 'k': 'K',\n"
|
|
|
" 'l': 'L',\n"
|
|
|
" 'm': 'M',\n"
|
|
|
" 'n': 'N',\n"
|
|
|
" 'o': 'O',\n"
|
|
|
" 'p': 'P',\n"
|
|
|
" 'q': 'Q',\n"
|
|
|
" 'r': 'R',\n"
|
|
|
" 's': 'S',\n"
|
|
|
" 't': 'T',\n"
|
|
|
" 'u': 'U',\n"
|
|
|
" 'v': 'V',\n"
|
|
|
" 'w': 'W',\n"
|
|
|
" 'x': 'X',\n"
|
|
|
" 'y': 'Y',\n"
|
|
|
" 'z': 'Z'})"),
|
|
|
(mp_recursive, "mappingproxy({2: {...}, 3: {2: {...}, 3: {...}}})"),
|
|
|
(underlying_dict,
|
|
|
"{2: mappingproxy({2: {...}, 3: {...}}), 3: {...}}"),
|
|
|
]
|
|
|
for obj, expected in cases:
|
|
|
nt.assert_equal(pretty.pretty(obj), expected)
|
|
|
|
|
|
def test_function_pretty():
|
|
|
"Test pretty print of function"
|
|
|
# posixpath is a pure python module, its interface is consistent
|
|
|
# across Python distributions
|
|
|
import posixpath
|
|
|
nt.assert_equal(pretty.pretty(posixpath.join), '<function posixpath.join(a, *p)>')
|
|
|
|
|
|
# custom function
|
|
|
def meaning_of_life(question=None):
|
|
|
if question:
|
|
|
return 42
|
|
|
return "Don't panic"
|
|
|
|
|
|
nt.assert_in('meaning_of_life(question=None)', pretty.pretty(meaning_of_life))
|
|
|
|
|
|
|
|
|
class OrderedCounter(Counter, OrderedDict):
|
|
|
'Counter that remembers the order elements are first encountered'
|
|
|
|
|
|
def __repr__(self):
|
|
|
return '%s(%r)' % (self.__class__.__name__, OrderedDict(self))
|
|
|
|
|
|
def __reduce__(self):
|
|
|
return self.__class__, (OrderedDict(self),)
|
|
|
|
|
|
def test_custom_repr():
|
|
|
"""A custom repr should override a pretty printer for a parent type"""
|
|
|
oc = OrderedCounter("abracadabra")
|
|
|
nt.assert_in("OrderedCounter(OrderedDict", pretty.pretty(oc))
|
|
|
|