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"""
test some jython internals
"""
import gc
import unittest
import time
from test.test_support import run_suite
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 make_clean():
# gc a few times just to be really sure, since in this
# case we don't really care if it takes a few cycles of GC
# for the garbage to be reached
gc.collect()
time.sleep(0.1)
gc.collect()
time.sleep(0.5)
gc.collect()
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()
""")
make_clean()
# get to steady state first, then verify we don't create new proxies
for i in xrange(2):
create_proxies()
start_size = class_to_type_map.size()
for i in xrange(5):
create_proxies()
make_clean()
self.assertEqual(start_size, class_to_type_map.size())
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__), 3)
#test = PyInstance.__tojava__(test, PyModule)
exec "b = 3" in test.__dict__
self.assertEquals(len(test.__dict__), 4)
def test_main():
test_suite = unittest.TestSuite()
test_loader = unittest.TestLoader()
def suite_add(case):
test_suite.addTest(test_loader.loadTestsFromTestCase(case))
suite_add(WeakIdentityMapTests)
suite_add(LongAsScaledDoubleValueTests)
suite_add(ExtraMathTests)
suite_add(DatetimeTypeMappingTest)
suite_add(IdTest)
suite_add(FrameTest)
suite_add(ModuleTest)
suite_add(MemoryLeakTests)
run_suite(test_suite)
if __name__ == "__main__":
test_main()
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