Source

python-clinic / Lib / test / test_pprint.py

Full commit
  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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
# -*- coding: utf-8 -*-

import pprint
import test.support
import unittest
import test.test_set
import random
import collections
import itertools

# list, tuple and dict subclasses that do or don't overwrite __repr__
class list2(list):
    pass

class list3(list):
    def __repr__(self):
        return list.__repr__(self)

class tuple2(tuple):
    pass

class tuple3(tuple):
    def __repr__(self):
        return tuple.__repr__(self)

class dict2(dict):
    pass

class dict3(dict):
    def __repr__(self):
        return dict.__repr__(self)

class Unorderable:
    def __repr__(self):
        return str(id(self))

class QueryTestCase(unittest.TestCase):

    def setUp(self):
        self.a = list(range(100))
        self.b = list(range(200))
        self.a[-12] = self.b

    def test_basic(self):
        # Verify .isrecursive() and .isreadable() w/o recursion
        pp = pprint.PrettyPrinter()
        for safe in (2, 2.0, 2j, "abc", [3], (2,2), {3: 3}, "yaddayadda",
                     self.a, self.b):
            # module-level convenience functions
            self.assertFalse(pprint.isrecursive(safe),
                             "expected not isrecursive for %r" % (safe,))
            self.assertTrue(pprint.isreadable(safe),
                            "expected isreadable for %r" % (safe,))
            # PrettyPrinter methods
            self.assertFalse(pp.isrecursive(safe),
                             "expected not isrecursive for %r" % (safe,))
            self.assertTrue(pp.isreadable(safe),
                            "expected isreadable for %r" % (safe,))

    def test_knotted(self):
        # Verify .isrecursive() and .isreadable() w/ recursion
        # Tie a knot.
        self.b[67] = self.a
        # Messy dict.
        self.d = {}
        self.d[0] = self.d[1] = self.d[2] = self.d

        pp = pprint.PrettyPrinter()

        for icky in self.a, self.b, self.d, (self.d, self.d):
            self.assertTrue(pprint.isrecursive(icky), "expected isrecursive")
            self.assertFalse(pprint.isreadable(icky), "expected not isreadable")
            self.assertTrue(pp.isrecursive(icky), "expected isrecursive")
            self.assertFalse(pp.isreadable(icky), "expected not isreadable")

        # Break the cycles.
        self.d.clear()
        del self.a[:]
        del self.b[:]

        for safe in self.a, self.b, self.d, (self.d, self.d):
            # module-level convenience functions
            self.assertFalse(pprint.isrecursive(safe),
                             "expected not isrecursive for %r" % (safe,))
            self.assertTrue(pprint.isreadable(safe),
                            "expected isreadable for %r" % (safe,))
            # PrettyPrinter methods
            self.assertFalse(pp.isrecursive(safe),
                             "expected not isrecursive for %r" % (safe,))
            self.assertTrue(pp.isreadable(safe),
                            "expected isreadable for %r" % (safe,))

    def test_unreadable(self):
        # Not recursive but not readable anyway
        pp = pprint.PrettyPrinter()
        for unreadable in type(3), pprint, pprint.isrecursive:
            # module-level convenience functions
            self.assertFalse(pprint.isrecursive(unreadable),
                             "expected not isrecursive for %r" % (unreadable,))
            self.assertFalse(pprint.isreadable(unreadable),
                             "expected not isreadable for %r" % (unreadable,))
            # PrettyPrinter methods
            self.assertFalse(pp.isrecursive(unreadable),
                             "expected not isrecursive for %r" % (unreadable,))
            self.assertFalse(pp.isreadable(unreadable),
                             "expected not isreadable for %r" % (unreadable,))

    def test_same_as_repr(self):
        # Simple objects, small containers and classes that overwrite __repr__
        # For those the result should be the same as repr().
        # Ahem.  The docs don't say anything about that -- this appears to
        # be testing an implementation quirk.  Starting in Python 2.5, it's
        # not true for dicts:  pprint always sorts dicts by key now; before,
        # it sorted a dict display if and only if the display required
        # multiple lines.  For that reason, dicts with more than one element
        # aren't tested here.
        for simple in (0, 0, 0+0j, 0.0, "", b"",
                       (), tuple2(), tuple3(),
                       [], list2(), list3(),
                       {}, dict2(), dict3(),
                       self.assertTrue, pprint,
                       -6, -6, -6-6j, -1.5, "x", b"x", (3,), [3], {3: 6},
                       (1,2), [3,4], {5: 6},
                       tuple2((1,2)), tuple3((1,2)), tuple3(range(100)),
                       [3,4], list2([3,4]), list3([3,4]), list3(range(100)),
                       dict2({5: 6}), dict3({5: 6}),
                       range(10, -11, -1)
                      ):
            native = repr(simple)
            for function in "pformat", "saferepr":
                f = getattr(pprint, function)
                got = f(simple)
                self.assertEqual(native, got,
                                 "expected %s got %s from pprint.%s" %
                                 (native, got, function))

    def test_basic_line_wrap(self):
        # verify basic line-wrapping operation
        o = {'RPM_cal': 0,
             'RPM_cal2': 48059,
             'Speed_cal': 0,
             'controldesk_runtime_us': 0,
             'main_code_runtime_us': 0,
             'read_io_runtime_us': 0,
             'write_io_runtime_us': 43690}
        exp = """\
{'RPM_cal': 0,
 'RPM_cal2': 48059,
 'Speed_cal': 0,
 'controldesk_runtime_us': 0,
 'main_code_runtime_us': 0,
 'read_io_runtime_us': 0,
 'write_io_runtime_us': 43690}"""
        for type in [dict, dict2]:
            self.assertEqual(pprint.pformat(type(o)), exp)

        o = range(100)
        exp = '[%s]' % ',\n '.join(map(str, o))
        for type in [list, list2]:
            self.assertEqual(pprint.pformat(type(o)), exp)

        o = tuple(range(100))
        exp = '(%s)' % ',\n '.join(map(str, o))
        for type in [tuple, tuple2]:
            self.assertEqual(pprint.pformat(type(o)), exp)

        # indent parameter
        o = range(100)
        exp = '[   %s]' % ',\n    '.join(map(str, o))
        for type in [list, list2]:
            self.assertEqual(pprint.pformat(type(o), indent=4), exp)

    def test_nested_indentations(self):
        o1 = list(range(10))
        o2 = dict(first=1, second=2, third=3)
        o = [o1, o2]
        expected = """\
[   [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
    {   'first': 1,
        'second': 2,
        'third': 3}]"""
        self.assertEqual(pprint.pformat(o, indent=4, width=42), expected)

    def test_sorted_dict(self):
        # Starting in Python 2.5, pprint sorts dict displays by key regardless
        # of how small the dictionary may be.
        # Before the change, on 32-bit Windows pformat() gave order
        # 'a', 'c', 'b' here, so this test failed.
        d = {'a': 1, 'b': 1, 'c': 1}
        self.assertEqual(pprint.pformat(d), "{'a': 1, 'b': 1, 'c': 1}")
        self.assertEqual(pprint.pformat([d, d]),
            "[{'a': 1, 'b': 1, 'c': 1}, {'a': 1, 'b': 1, 'c': 1}]")

        # The next one is kind of goofy.  The sorted order depends on the
        # alphabetic order of type names:  "int" < "str" < "tuple".  Before
        # Python 2.5, this was in the test_same_as_repr() test.  It's worth
        # keeping around for now because it's one of few tests of pprint
        # against a crazy mix of types.
        self.assertEqual(pprint.pformat({"xy\tab\n": (3,), 5: [[]], (): {}}),
            r"{5: [[]], 'xy\tab\n': (3,), (): {}}")

    def test_ordered_dict(self):
        words = 'the quick brown fox jumped over a lazy dog'.split()
        d = collections.OrderedDict(zip(words, itertools.count()))
        self.assertEqual(pprint.pformat(d),
"""\
{'the': 0,
 'quick': 1,
 'brown': 2,
 'fox': 3,
 'jumped': 4,
 'over': 5,
 'a': 6,
 'lazy': 7,
 'dog': 8}""")
    def test_subclassing(self):
        o = {'names with spaces': 'should be presented using repr()',
             'others.should.not.be': 'like.this'}
        exp = """\
{'names with spaces': 'should be presented using repr()',
 others.should.not.be: like.this}"""
        self.assertEqual(DottedPrettyPrinter().pformat(o), exp)

    @unittest.expectedFailure
    #See http://bugs.python.org/issue13907
    @test.support.cpython_only
    def test_set_reprs(self):
        # This test creates a complex arrangement of frozensets and
        # compares the pretty-printed repr against a string hard-coded in
        # the test.  The hard-coded repr depends on the sort order of
        # frozensets.
        #
        # However, as the docs point out: "Since sets only define
        # partial ordering (subset relationships), the output of the
        # list.sort() method is undefined for lists of sets."
        #
        # In a nutshell, the test assumes frozenset({0}) will always
        # sort before frozenset({1}), but:
        #
        # >>> frozenset({0}) < frozenset({1})
        # False
        # >>> frozenset({1}) < frozenset({0})
        # False
        #
        # Consequently, this test is fragile and
        # implementation-dependent.  Small changes to Python's sort
        # algorithm cause the test to fail when it should pass.
        # XXX Or changes to the dictionary implmentation...

        self.assertEqual(pprint.pformat(set()), 'set()')
        self.assertEqual(pprint.pformat(set(range(3))), '{0, 1, 2}')
        self.assertEqual(pprint.pformat(frozenset()), 'frozenset()')

        self.assertEqual(pprint.pformat(frozenset(range(3))), 'frozenset({0, 1, 2})')
        cube_repr_tgt = """\
{frozenset(): frozenset({frozenset({2}), frozenset({0}), frozenset({1})}),
 frozenset({0}): frozenset({frozenset(),
                            frozenset({0, 2}),
                            frozenset({0, 1})}),
 frozenset({1}): frozenset({frozenset(),
                            frozenset({1, 2}),
                            frozenset({0, 1})}),
 frozenset({2}): frozenset({frozenset(),
                            frozenset({1, 2}),
                            frozenset({0, 2})}),
 frozenset({1, 2}): frozenset({frozenset({2}),
                               frozenset({1}),
                               frozenset({0, 1, 2})}),
 frozenset({0, 2}): frozenset({frozenset({2}),
                               frozenset({0}),
                               frozenset({0, 1, 2})}),
 frozenset({0, 1}): frozenset({frozenset({0}),
                               frozenset({1}),
                               frozenset({0, 1, 2})}),
 frozenset({0, 1, 2}): frozenset({frozenset({1, 2}),
                                  frozenset({0, 2}),
                                  frozenset({0, 1})})}"""
        cube = test.test_set.cube(3)
        self.assertEqual(pprint.pformat(cube), cube_repr_tgt)
        cubo_repr_tgt = """\
{frozenset({frozenset({0, 2}), frozenset({0})}): frozenset({frozenset({frozenset({0,
                                                                                  2}),
                                                                       frozenset({0,
                                                                                  1,
                                                                                  2})}),
                                                            frozenset({frozenset({0}),
                                                                       frozenset({0,
                                                                                  1})}),
                                                            frozenset({frozenset(),
                                                                       frozenset({0})}),
                                                            frozenset({frozenset({2}),
                                                                       frozenset({0,
                                                                                  2})})}),
 frozenset({frozenset({0, 1}), frozenset({1})}): frozenset({frozenset({frozenset({0,
                                                                                  1}),
                                                                       frozenset({0,
                                                                                  1,
                                                                                  2})}),
                                                            frozenset({frozenset({0}),
                                                                       frozenset({0,
                                                                                  1})}),
                                                            frozenset({frozenset({1}),
                                                                       frozenset({1,
                                                                                  2})}),
                                                            frozenset({frozenset(),
                                                                       frozenset({1})})}),
 frozenset({frozenset({1, 2}), frozenset({1})}): frozenset({frozenset({frozenset({1,
                                                                                  2}),
                                                                       frozenset({0,
                                                                                  1,
                                                                                  2})}),
                                                            frozenset({frozenset({2}),
                                                                       frozenset({1,
                                                                                  2})}),
                                                            frozenset({frozenset(),
                                                                       frozenset({1})}),
                                                            frozenset({frozenset({1}),
                                                                       frozenset({0,
                                                                                  1})})}),
 frozenset({frozenset({1, 2}), frozenset({2})}): frozenset({frozenset({frozenset({1,
                                                                                  2}),
                                                                       frozenset({0,
                                                                                  1,
                                                                                  2})}),
                                                            frozenset({frozenset({1}),
                                                                       frozenset({1,
                                                                                  2})}),
                                                            frozenset({frozenset({2}),
                                                                       frozenset({0,
                                                                                  2})}),
                                                            frozenset({frozenset(),
                                                                       frozenset({2})})}),
 frozenset({frozenset(), frozenset({0})}): frozenset({frozenset({frozenset({0}),
                                                                 frozenset({0,
                                                                            1})}),
                                                      frozenset({frozenset({0}),
                                                                 frozenset({0,
                                                                            2})}),
                                                      frozenset({frozenset(),
                                                                 frozenset({1})}),
                                                      frozenset({frozenset(),
                                                                 frozenset({2})})}),
 frozenset({frozenset(), frozenset({1})}): frozenset({frozenset({frozenset(),
                                                                 frozenset({0})}),
                                                      frozenset({frozenset({1}),
                                                                 frozenset({1,
                                                                            2})}),
                                                      frozenset({frozenset(),
                                                                 frozenset({2})}),
                                                      frozenset({frozenset({1}),
                                                                 frozenset({0,
                                                                            1})})}),
 frozenset({frozenset({2}), frozenset()}): frozenset({frozenset({frozenset({2}),
                                                                 frozenset({1,
                                                                            2})}),
                                                      frozenset({frozenset(),
                                                                 frozenset({0})}),
                                                      frozenset({frozenset(),
                                                                 frozenset({1})}),
                                                      frozenset({frozenset({2}),
                                                                 frozenset({0,
                                                                            2})})}),
 frozenset({frozenset({0, 1, 2}), frozenset({0, 1})}): frozenset({frozenset({frozenset({1,
                                                                                        2}),
                                                                             frozenset({0,
                                                                                        1,
                                                                                        2})}),
                                                                  frozenset({frozenset({0,
                                                                                        2}),
                                                                             frozenset({0,
                                                                                        1,
                                                                                        2})}),
                                                                  frozenset({frozenset({0}),
                                                                             frozenset({0,
                                                                                        1})}),
                                                                  frozenset({frozenset({1}),
                                                                             frozenset({0,
                                                                                        1})})}),
 frozenset({frozenset({0}), frozenset({0, 1})}): frozenset({frozenset({frozenset(),
                                                                       frozenset({0})}),
                                                            frozenset({frozenset({0,
                                                                                  1}),
                                                                       frozenset({0,
                                                                                  1,
                                                                                  2})}),
                                                            frozenset({frozenset({0}),
                                                                       frozenset({0,
                                                                                  2})}),
                                                            frozenset({frozenset({1}),
                                                                       frozenset({0,
                                                                                  1})})}),
 frozenset({frozenset({2}), frozenset({0, 2})}): frozenset({frozenset({frozenset({0,
                                                                                  2}),
                                                                       frozenset({0,
                                                                                  1,
                                                                                  2})}),
                                                            frozenset({frozenset({2}),
                                                                       frozenset({1,
                                                                                  2})}),
                                                            frozenset({frozenset({0}),
                                                                       frozenset({0,
                                                                                  2})}),
                                                            frozenset({frozenset(),
                                                                       frozenset({2})})}),
 frozenset({frozenset({0, 1, 2}), frozenset({0, 2})}): frozenset({frozenset({frozenset({1,
                                                                                        2}),
                                                                             frozenset({0,
                                                                                        1,
                                                                                        2})}),
                                                                  frozenset({frozenset({0,
                                                                                        1}),
                                                                             frozenset({0,
                                                                                        1,
                                                                                        2})}),
                                                                  frozenset({frozenset({0}),
                                                                             frozenset({0,
                                                                                        2})}),
                                                                  frozenset({frozenset({2}),
                                                                             frozenset({0,
                                                                                        2})})}),
 frozenset({frozenset({1, 2}), frozenset({0, 1, 2})}): frozenset({frozenset({frozenset({0,
                                                                                        2}),
                                                                             frozenset({0,
                                                                                        1,
                                                                                        2})}),
                                                                  frozenset({frozenset({0,
                                                                                        1}),
                                                                             frozenset({0,
                                                                                        1,
                                                                                        2})}),
                                                                  frozenset({frozenset({2}),
                                                                             frozenset({1,
                                                                                        2})}),
                                                                  frozenset({frozenset({1}),
                                                                             frozenset({1,
                                                                                        2})})})}"""

        cubo = test.test_set.linegraph(cube)
        self.assertEqual(pprint.pformat(cubo), cubo_repr_tgt)

    def test_depth(self):
        nested_tuple = (1, (2, (3, (4, (5, 6)))))
        nested_dict = {1: {2: {3: {4: {5: {6: 6}}}}}}
        nested_list = [1, [2, [3, [4, [5, [6, []]]]]]]
        self.assertEqual(pprint.pformat(nested_tuple), repr(nested_tuple))
        self.assertEqual(pprint.pformat(nested_dict), repr(nested_dict))
        self.assertEqual(pprint.pformat(nested_list), repr(nested_list))

        lv1_tuple = '(1, (...))'
        lv1_dict = '{1: {...}}'
        lv1_list = '[1, [...]]'
        self.assertEqual(pprint.pformat(nested_tuple, depth=1), lv1_tuple)
        self.assertEqual(pprint.pformat(nested_dict, depth=1), lv1_dict)
        self.assertEqual(pprint.pformat(nested_list, depth=1), lv1_list)

    def test_sort_unorderable_values(self):
        # Issue 3976:  sorted pprints fail for unorderable values.
        n = 20
        keys = [Unorderable() for i in range(n)]
        random.shuffle(keys)
        skeys = sorted(keys, key=id)
        clean = lambda s: s.replace(' ', '').replace('\n','')

        self.assertEqual(clean(pprint.pformat(set(keys))),
            '{' + ','.join(map(repr, skeys)) + '}')
        self.assertEqual(clean(pprint.pformat(frozenset(keys))),
            'frozenset({' + ','.join(map(repr, skeys)) + '})')
        self.assertEqual(clean(pprint.pformat(dict.fromkeys(keys))),
            '{' + ','.join('%r:None' % k for k in skeys) + '}')

        # Issue 10017: TypeError on user-defined types as dict keys.
        self.assertEqual(pprint.pformat({Unorderable: 0, 1: 0}),
                         '{1: 0, ' + repr(Unorderable) +': 0}')

        # Issue 14998: TypeError on tuples with NoneTypes as dict keys.
        keys = [(1,), (None,)]
        self.assertEqual(pprint.pformat(dict.fromkeys(keys, 0)),
                         '{%r: 0, %r: 0}' % tuple(sorted(keys, key=id)))

    def test_str_wrap(self):
        # pprint tries to wrap strings intelligently
        fox = 'the quick brown fox jumped over a lazy dog'
        self.assertEqual(pprint.pformat(fox, width=20), """\
'the quick brown '
'fox jumped over '
'a lazy dog'""")
        self.assertEqual(pprint.pformat({'a': 1, 'b': fox, 'c': 2},
                                        width=26), """\
{'a': 1,
 'b': 'the quick brown '
      'fox jumped over '
      'a lazy dog',
 'c': 2}""")
        # With some special characters
        # - \n always triggers a new line in the pprint
        # - \t and \n are escaped
        # - non-ASCII is allowed
        # - an apostrophe doesn't disrupt the pprint
        special = "Portons dix bons \"whiskys\"\nà l'avocat goujat\t qui fumait au zoo"
        self.assertEqual(pprint.pformat(special, width=20), """\
'Portons dix bons '
'"whiskys"\\n'
"à l'avocat "
'goujat\\t qui '
'fumait au zoo'""")
        # An unwrappable string is formatted as its repr
        unwrappable = "x" * 100
        self.assertEqual(pprint.pformat(unwrappable, width=80), repr(unwrappable))
        self.assertEqual(pprint.pformat(''), "''")
        # Check that the pprint is a usable repr
        special *= 10
        for width in range(3, 40):
            formatted = pprint.pformat(special, width=width)
            self.assertEqual(eval("(" + formatted + ")"), special)


class DottedPrettyPrinter(pprint.PrettyPrinter):

    def format(self, object, context, maxlevels, level):
        if isinstance(object, str):
            if ' ' in object:
                return repr(object), 1, 0
            else:
                return object, 0, 0
        else:
            return pprint.PrettyPrinter.format(
                self, object, context, maxlevels, level)


def test_main():
    test.support.run_unittest(QueryTestCase)


if __name__ == "__main__":
    test_main()