Lib.test.test_jy_internals.py Maven / Gradle / Ivy
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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.
"""
test some jython internals
"""
import unittest
import time
from test import test_support
import java
import jarray
from org.python.core import Py
from org.python.util import PythonInterpreter
from javatests.TestSupport import getField
from java.sql import Date, Time, Timestamp
import datetime
class MemoryLeakTests(unittest.TestCase):
def test_class_to_test_weakness(self):
# regrtest for bug 1522, adapted from test code submitted by Matt Brinkley
# work around the fact that we can't look at PyType directly
# by using this helper function that reflects on PyType (and
# demonstrates here that it's the same as the builtin function
# `type`!)
class_to_type_map = getField(type, 'class_to_type').get(None)
def create_proxies():
pi = PythonInterpreter()
pi.exec("""
from java.lang import Comparable
class Dog(Comparable):
def compareTo(self, o):
return 0
def bark(self):
return 'woof woof'
Dog().bark()
""")
# get to steady state first, then verify we don't create new proxies
for i in xrange(2):
create_proxies()
# Ensure the reaper thread can run and clear out weak refs, so
# use this supporting function
test_support.gc_collect()
# Given that taking the len (or size()) of Guava weak maps is
# eventually consistent, we should instead take a len of its
# keys.
start_size = len(list(class_to_type_map))
for i in xrange(5):
create_proxies()
test_support.gc_collect()
self.assertEqual(start_size, len(list(class_to_type_map)))
class WeakIdentityMapTests(unittest.TestCase):
def test_functionality(self):
from org.python.core import IdImpl
i = java.lang.Integer(2)
j = java.lang.Integer(2)
# sanity check
assert i == j and i is not j
h = java.lang.Integer(2)
widmap = IdImpl.WeakIdentityMap()
widmap.put(i,'i')
widmap.put(j,'j')
widmap.put(h,'h')
assert widmap.get(i) == 'i'
assert widmap.get(j) == 'j'
assert widmap.get(h) == 'h'
# white box double-check
assert widmap._internal_map_size() == 3
widmap.remove(h)
assert widmap.get(h) is None
# white box double-check
assert widmap._internal_map_size() == 2
# white box test for weak referencing of keys
del j
java.lang.System.gc()
java.lang.System.runFinalization()
java.lang.System.gc()
java.lang.System.runFinalization()
time.sleep(1)
assert widmap.get(i) == 'i' # triggers stale weak refs cleanup
assert widmap._internal_map_size() == 1
class LongAsScaledDoubleValueTests(unittest.TestCase):
def setUp(self):
self.v = v = 2**53-1 # full mag bits of a double value
self.v8 = v * 8 # fills up 7 bytes
self.e = jarray.zeros(1,'i')
iarr = java.lang.Object.getClass(self.e)
sdv = java.lang.Class.getMethod(long, 'scaledDoubleValue', [iarr])
import org.python.core.PyReflectedFunction as ReflFunc
self.sdv = ReflFunc([sdv])
def test_basic_roundtrip(self):
e = self.e
sdv = self.sdv
assert long(sdv(0L, e)) == 0
assert e[0] == 0
assert long(sdv(1L, e)) == 1
assert e[0] == 0
assert long(sdv(-1L, e)) == -1
assert e[0] == 0
assert long(sdv(self.v, e)) == self.v
assert e[0] == 0
def test_scale_3_v(self):
e = self.e
v = self.v8
sdv = self.sdv
assert long(sdv(v, e)) == v
assert e[0] == 0
assert long(sdv(v+1, e)) - v == 0
assert e[0] == 0
def test_no_worse_than_doubleValue(self):
e = self.e
v = self.v8
sdv = self.sdv
for d in range(8):
assert float(v+d) == sdv(v+d, e)
assert e[0] == 0
for d in range(8):
for y in [0,255]:
assert float((v+d)*256+y) == sdv((v+d)*256+y, e)
assert e[0] == 0
for d in range(8):
for y in [0,255]:
assert float((v+d)*256+y) == sdv(((v+d)*256+y)*256, e)
assert e[0] == 1
class ExtraMathTests(unittest.TestCase):
def test_epsilon(self):
from org.python.core.util import ExtraMath
self.assertNotEqual(1.0 + ExtraMath.EPSILON, 1.0)
self.assertEqual(1.0 + (ExtraMath.EPSILON/2.0), 1.0)
def test_close(self):
from org.python.core.util import ExtraMath
self.assert_(ExtraMath.close(3.0, 3.0))
self.assert_(ExtraMath.close(3.0, 3.0 + ExtraMath.CLOSE))
self.assert_(not ExtraMath.close(3.0, 3.0 + 4.0*ExtraMath.CLOSE))
def test_closeFloor(self):
from org.python.core.util import ExtraMath
import math
self.assertEquals(ExtraMath.closeFloor(3.5), 3.0)
self.assertEquals(ExtraMath.closeFloor(3.0 - ExtraMath.EPSILON), 3.0)
self.assertEquals(
ExtraMath.closeFloor(3.0 - 3.0 * ExtraMath.CLOSE), 2.0)
self.assertEquals(ExtraMath.closeFloor(math.log10(10**3)), 3.0)
class DatetimeTypeMappingTest(unittest.TestCase):
def test_date(self):
self.assertEquals(datetime.date(2008, 5, 29),
Py.newDate(Date(108, 4, 29)))
self.assertEquals(datetime.date(1999, 1, 1),
Py.newDate(Date(99, 0, 1)))
def test_time(self):
self.assertEquals(datetime.time(0, 0, 0),
Py.newTime(Time(0, 0, 0)))
self.assertEquals(datetime.time(23, 59, 59),
Py.newTime(Time(23, 59, 59)))
def test_datetime(self):
self.assertEquals(datetime.datetime(2008, 1, 1),
Py.newDatetime(Timestamp(108, 0, 1, 0, 0, 0, 0)))
self.assertEquals(datetime.datetime(2008, 5, 29, 16, 50, 0),
Py.newDatetime(Timestamp(108, 4, 29, 16, 50, 0, 0)))
self.assertEquals(datetime.datetime(2008, 5, 29, 16, 50, 1, 1),
Py.newDatetime(Timestamp(108, 4, 29, 16, 50, 1, 1000)))
class IdTest(unittest.TestCase):
def test_unique_ids(self):
d = {}
cnt = 0
for i in xrange(100000):
s = "test" + repr(i)
j = id(s)
if d.has_key(j):
cnt = cnt + 1
d[j] = s
self.assertEquals(cnt, 0)
class FrameTest(unittest.TestCase):
def test_stack_frame_locals(self):
def h():
a = 1
b = 2
raise AttributeError("spam")
try:
h()
except:
import sys
tb = sys.exc_info()[2]
while tb.tb_next is not None:
tb = tb.tb_next
vars = tb.tb_frame.f_locals
self.assertEquals(sorted(vars.items()), [('a',1), ('b',2)])
def test_frame_info(self):
import sys
from types import ClassType
def getinfo():
""" Returns a tuple consisting of:
the name of the current module
the name of the current class or None
the name of the current function
the current line number
"""
try:
1/0
except:
tb = sys.exc_info()[-1]
frame = tb.tb_frame.f_back
modulename = frame.f_globals['__name__']
funcname = frame.f_code.co_name
lineno = frame.f_lineno
if len(frame.f_code.co_varnames) == 0:
classname = None
else:
self = frame.f_locals[frame.f_code.co_varnames[0]]
myclass = self.__class__
if type(myclass) == ClassType:
classname = myclass.__name__
else:
classname = None
return modulename, classname, funcname, lineno
def foo():
x = 99
g = getinfo()
assert (g[0] == "__main__" or g[0] == "test.test_jy_internals")
self.assertEquals(g[1], None)
self.assertEquals(g[2], "foo")
class Bar:
def baz(self):
g = getinfo()
assert (g[0] == "__main__" or g[0] == "test.test_jy_internals")
assert (g[1] == "Bar")
assert (g[2] == "baz")
g = getinfo()
assert (g[0] == "__main__" or g[0] == "test.test_jy_internals")
self.assertEquals(g[1], None)
self.assertEquals(g[2], "test_frame_info")
foo()
Bar().baz()
class ModuleTest(unittest.TestCase):
def test_create_module(self):
from org.python.core import PyModule, PyInstance
test = PyModule("test", {})
exec "a = 2" in test.__dict__
self.assertEquals(len(test.__dict__), 4)
#test = PyInstance.__tojava__(test, PyModule)
exec "b = 3" in test.__dict__
self.assertEquals(len(test.__dict__), 5)
def test_main():
test_support.run_unittest(__name__)
if __name__ == "__main__":
test_main()