forked from ipython/ipython
-
Notifications
You must be signed in to change notification settings - Fork 0
/
test_pretty.py
231 lines (181 loc) · 5.95 KB
/
test_pretty.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
"""Tests for IPython.lib.pretty.
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2011, the IPython Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from __future__ import print_function
# Third-party imports
import nose.tools as nt
# Our own imports
from IPython.lib import pretty
from IPython.testing.decorators import skip_without
#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
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 raise, even when repr fails"""
output = pretty.pretty(BadRepr())
nt.assert_in("failed", output)
nt.assert_in("at 0x", output)
nt.assert_in("test_pretty", output)
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():
output = pretty.pretty(ReallyBadRepr())
nt.assert_in("failed", output)
nt.assert_in("BadException: unknown", output)
nt.assert_in("unknown type", output)
class SA(object):
pass
class SB(SA):
pass
def test_super_repr():
output = pretty.pretty(super(SA))
nt.assert_in("SA", output)
sb = SB()
output = pretty.pretty(super(SA, sb))
nt.assert_in("SA", output)
def test_long_list():
lis = list(range(10000))
p = pretty.pretty(lis)
last2 = p.rsplit('\n', 2)[-2:]
nt.assert_equal(last2, [' 999,', ' ...]'])
def test_long_set():
s = set(range(10000))
p = pretty.pretty(s)
last2 = p.rsplit('\n', 2)[-2:]
nt.assert_equal(last2, [' 999,', ' ...}'])
def test_long_tuple():
tup = tuple(range(10000))
p = pretty.pretty(tup)
last2 = p.rsplit('\n', 2)[-2:]
nt.assert_equal(last2, [' 999,', ' ...)'])
def test_long_dict():
d = { n:n for n in range(10000) }
p = pretty.pretty(d)
last2 = p.rsplit('\n', 2)[-2:]
nt.assert_equal(last2, [' 999: 999,', ' ...}'])
def test_unbound_method():
output = pretty.pretty(MyObj.somemethod)
nt.assert_in('MyObj.somemethod', output)