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import pprint
import test.test_support
import unittest
try:
uni = str
except NameError:
def uni(x):
return x
# 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 QueryTestCase(unittest.TestCase):
def setUp(self):
self.a = range(100)
self.b = range(200)
self.a[-12] = self.b
def test_basic(self):
# Verify .isrecursive() and .isreadable() w/o recursion
verify = self.assert_
pp = pprint.PrettyPrinter()
for safe in (2, 2.0, 2j, "abc", [3], (2,2), {3: 3}, uni("yaddayadda"),
self.a, self.b):
# module-level convenience functions
verify(not pprint.isrecursive(safe),
"expected not isrecursive for %r" % (safe,))
verify(pprint.isreadable(safe),
"expected isreadable for %r" % (safe,))
# PrettyPrinter methods
verify(not pp.isrecursive(safe),
"expected not isrecursive for %r" % (safe,))
verify(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
verify = self.assert_
pp = pprint.PrettyPrinter()
for icky in self.a, self.b, self.d, (self.d, self.d):
verify(pprint.isrecursive(icky), "expected isrecursive")
verify(not pprint.isreadable(icky), "expected not isreadable")
verify(pp.isrecursive(icky), "expected isrecursive")
verify(not 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
verify(not pprint.isrecursive(safe),
"expected not isrecursive for %r" % (safe,))
verify(pprint.isreadable(safe),
"expected isreadable for %r" % (safe,))
# PrettyPrinter methods
verify(not pp.isrecursive(safe),
"expected not isrecursive for %r" % (safe,))
verify(pp.isreadable(safe),
"expected isreadable for %r" % (safe,))
def test_unreadable(self):
# Not recursive but not readable anyway
verify = self.assert_
pp = pprint.PrettyPrinter()
for unreadable in type(3), pprint, pprint.isrecursive:
# module-level convenience functions
verify(not pprint.isrecursive(unreadable),
"expected not isrecursive for %r" % (unreadable,))
verify(not pprint.isreadable(unreadable),
"expected not isreadable for %r" % (unreadable,))
# PrettyPrinter methods
verify(not pp.isrecursive(unreadable),
"expected not isrecursive for %r" % (unreadable,))
verify(not 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.
verify = self.assert_
for simple in (0, 0, 0+0j, 0.0, "", uni(""),
(), tuple2(), tuple3(),
[], list2(), list3(),
{}, dict2(), dict3(),
verify, pprint,
-6, -6, -6-6j, -1.5, "x", uni("x"), (3,), [3], {3: 6},
(1,2), [3,4], {5: 6, 7: 8},
tuple2((1,2)), tuple3((1,2)), tuple3(range(100)),
[3,4], list2([3,4]), list3([3,4]), list3(range(100)),
{5: 6, 7: 8}, 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)
verify(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_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_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)
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.test_support.run_unittest(QueryTestCase)
if __name__ == "__main__":
test_main()
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