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import pprint
import unittest
import test_support
try:
uni = unicode
except NameError:
def uni(x):return x
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_
for safe in (2, 2.0, 2j, "abc", [3], (2,2), {3: 3}, uni("yaddayadda"),
self.a, self.b):
verify(not pprint.isrecursive(safe),
"expected not isrecursive for " + `safe`)
verify(pprint.isreadable(safe),
"expected isreadable for " + `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_
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")
# 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):
verify(not pprint.isrecursive(safe),
"expected not isrecursive for " + `safe`)
verify(pprint.isreadable(safe),
"expected isreadable for " + `safe`)
def test_unreadable(self):
"""Not recursive but not readable anyway."""
verify = self.assert_
for unreadable in type(3), pprint, pprint.isrecursive:
verify(not pprint.isrecursive(unreadable),
"expected not isrecursive for " + `unreadable`)
verify(not pprint.isreadable(unreadable),
"expected not isreadable for " + `unreadable`)
def test_same_as_repr(self):
"Simple objects and small containers that should be same as repr()."
verify = self.assert_
for simple in (0, 0L, 0+0j, 0.0, "", uni(""), (), [], {}, verify, pprint,
-6, -6L, -6-6j, -1.5, "x", uni("x"), (3,), [3], {3: 6},
(1,2), [3,4], {5: 6, 7: 8},
{"xy\tab\n": (3,), 5: [[]], (): {}},
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_main():
test_support.run_unittest(QueryTestCase)
if __name__ == "__main__":
test_main()
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