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Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
import unittest
from test import test_support, test_set
import pickle
import threading
from java.io import (ByteArrayInputStream, ByteArrayOutputStream,
ObjectInputStream, ObjectOutputStream)
from java.util import Random, HashSet, LinkedHashSet
from javatests import PySetInJavaTest
class SetTestCase(unittest.TestCase):
def test_binops(self):
class Foo(object):
__rsub__ = lambda self, other: 'rsub'
__ror__ = lambda self, other: 'ror'
__rand__ = lambda self, other: 'rand'
__rxor__ = lambda self, other: 'rxor'
foo = Foo()
s = set()
self.assertEqual(s - foo, 'rsub')
self.assertEqual(s | foo, 'ror')
self.assertEqual(s & foo, 'rand')
self.assertEqual(s ^ foo, 'rxor')
def test_pop_race(self):
# issue 1854
nthreads = 200
# the race might not happen the first time so we try a few just in case
for i in xrange(4):
s = set(range(200))
threads = [threading.Thread(target=s.pop) for i in range(nthreads)]
for t in threads: t.start()
for t in threads: t.join()
self.assertEqual(len(s), 0)
def test_big_set(self):
"""Verify that fairly large collection literals of primitives can be constructed."""
# use \n to separate to avoid parser problems
s = eval("{" + ",\n".join((str(x) for x in xrange(64000))) +"}")
self.assertEqual(len(s), 64000)
self.assertEqual(sum(s), 2047968000)
class SetInJavaTestCase(unittest.TestCase):
"""Tests for derived dict behaviour"""
def test_using_PySet_as_Java_Set(self):
PySetInJavaTest.testPySetAsJavaSet()
def test_accessing_items_added_in_java(self):
s = PySetInJavaTest.createPySetContainingJavaObjects()
for v in s:
self.assert_(v in s)
if isinstance(v, unicode):
self.assertEquals("value", v)
else:
# Should be a java.util.Random; ensure we can call it
v.nextInt()
def test_java_accessing_items_added_in_python(self):
# Test a type that should be coerced into a Java type, a Java
# instance that should be wrapped, and a Python instance that
# should pass through as itself with str, Random and tuple
# respectively.
s = set(["value", Random(), ("tuple", "of", "stuff")])
PySetInJavaTest.accessAndRemovePySetItems(s)
# Check that the Java removal affected the underlying set
self.assertEquals(0, len(s))
def test_serialization(self):
s = set(range(5, 10))
output = ByteArrayOutputStream()
serializer = ObjectOutputStream(output)
serializer.writeObject(s)
serializer.close()
input = ByteArrayInputStream(output.toByteArray())
unserializer = ObjectInputStream(input)
self.assertEqual(s, unserializer.readObject())
class TestJavaSet(test_set.TestSet):
type2test = HashSet
def test_init(self):
# Instances of Java types cannot be re-initialized
pass
def test_cyclical_repr(self):
pass
def test_cyclical_print(self):
pass
def test_pickling(self):
for i in range(pickle.HIGHEST_PROTOCOL + 1):
p = pickle.dumps(self.s, i)
dup = pickle.loads(p)
self.assertEqual(self.s, dup, "%s != %s" % (self.s, dup))
def test_equality_empty_set(self):
js = self.type2test()
self.assertTrue(js == set())
self.assertTrue(set() == js)
def test_equality_simple_set(self):
js = self.type2test()
self.assertFalse(js == set([1]))
self.assertFalse(set([1]) == js)
def test_equality_mixed_types_set(self):
ref = {False, 1, 3**9, "3"}
alt = {0, True, 3L**9, u"3"}
self.assertEqual(ref, alt) # test assumption
jref = self.type2test(ref)
for v in [ref, alt, jref]:
self.assertTrue(jref == v)
self.assertTrue(v == jref)
self.assertTrue(jref == self.type2test(v))
self.assertTrue(self.type2test(v) == jref)
alt1 = {False, 1.01, 3**9, "3"}
alt2 = {False, 1, "3"};
alt3 = {False, 1, 3**9, "3", ""};
for v in [alt1, alt2, alt3, set()]:
self.assertFalse(jref == v)
self.assertFalse(v == jref)
self.assertFalse(jref == self.type2test(v))
self.assertFalse(self.type2test(v) == jref)
# Test for http://bugs.jython.org/issue2639
# This is to test the != comparisons between Java and Python sets
def test_inequality_empty_set(self):
js = self.type2test()
self.assertFalse(js != set())
self.assertFalse(set() != js)
def test_inequality_simple_set(self):
js = self.type2test()
self.assertTrue(js != set([1]))
self.assertTrue(set([1]) != js)
def test_inequality_mixed_types_set(self):
ref = {False, 1, 3**9, "3"}
alt = {0, True, 3L**9, u"3"}
self.assertEqual(ref, alt) # test assumption
jref = self.type2test(ref)
for v in [ref, alt, jref]:
self.assertFalse(jref != v)
self.assertFalse(v != jref)
self.assertFalse(jref != self.type2test(v))
self.assertFalse(self.type2test(v) != jref)
alt1 = {False, 1.01, 3**9, "3"}
alt2 = {False, 1, "3"};
alt3 = {False, 1, 3**9, "3", ""};
for v in [alt1, alt2, alt3, set()]:
self.assertTrue(jref != v)
self.assertTrue(v != jref)
self.assertTrue(jref != self.type2test(v))
self.assertTrue(self.type2test(v) != jref)
class TestJavaHashSet(TestJavaSet):
type2test = HashSet
class TestJavaLinkedHashSet(TestJavaSet):
type2test = LinkedHashSet
class SetSubclassCallsSuperMethods(set):
# Used to verify all call paths where there is more than one way
# to call the super method, such as (union, __or__), etc
def _valid_op_args(f):
def _screener(*args):
if len(args) != 2:
raise TypeError()
for arg in args:
if not (isinstance(arg, set) or isinstance(arg, frozenset)):
raise TypeError()
return f(*args)
return _screener
def _call_for_side_effects(f):
def _mutating_convention(*args):
f(*args)
return None
return _mutating_convention
def issubset(self, other):
return super(SetSubclassCallsSuperMethods, self).issubset(other)
__le__ = issubset
def issuperset(self, other):
return super(SetSubclassCallsSuperMethods, self).issuperset(other)
__ge__ = issuperset
def union(self, *others):
return super(SetSubclassCallsSuperMethods, self).union(*others)
__or__ = _valid_op_args(union)
def intersection(self, *others):
return super(SetSubclassCallsSuperMethods, self).intersection(*others)
__and__ = _valid_op_args(intersection)
def difference(self, *others):
return super(SetSubclassCallsSuperMethods, self).difference(*others)
__sub__ = _valid_op_args(difference)
def symmetric_difference(self, *others):
return super(SetSubclassCallsSuperMethods, self).symmetric_difference(*others)
__xor__ = _valid_op_args(symmetric_difference)
def _update(self, *others):
super(SetSubclassCallsSuperMethods, self).update(*others)
return self
update = _call_for_side_effects(_update)
__ior__ = _update
def _difference_update(self, *others):
super(SetSubclassCallsSuperMethods, self).difference_update(*others)
return self
difference_update = _call_for_side_effects(_difference_update)
__isub__ = _difference_update
def _intersection_update(self, *others):
super(SetSubclassCallsSuperMethods, self).intersection_update(*others)
return self
intersection_update = _call_for_side_effects(_intersection_update)
__iand__ = _intersection_update
def _symmetric_difference_update(self, other):
super(SetSubclassCallsSuperMethods, self).symmetric_difference_update(other)
return self
symmetric_difference_update = _call_for_side_effects(_symmetric_difference_update)
__ixor__ = _symmetric_difference_update
class TestSetSubclassCallsSuperMethods(test_set.TestSet):
# verifies fix for http://bugs.jython.org/issue2357
thetype = SetSubclassCallsSuperMethods
def test_main():
tests = [
SetTestCase,
SetInJavaTestCase,
TestJavaHashSet,
TestJavaLinkedHashSet,
TestSetSubclassCallsSuperMethods
]
test_support.run_unittest(*tests)
if __name__ == '__main__':
test_main()