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# *****************************************************************************
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# See NOTICE file for details.
#
# *****************************************************************************
import _jpype
import jpype
import _jpype
from jpype.types import *
from jpype import java
import common
try:
import numpy as np
except ImportError:
pass
class JClassTestCase(common.JPypeTestCase):
""" Test for methods of JObject
Should test:
- ``__getattribute__`` against methods, fields, python methods, and python properties
- ``__setattr__`` against fields, final fields, python private fields
- ``class_`` property
- ``mro``
"""
def setUp(self):
common.JPypeTestCase.setUp(self)
self.fixture = JClass('jpype.common.Fixture')()
def testSetAttrPythonField(self):
cls = JClass('java.lang.String')
obj = cls('foo')
# Setting a private field on a Java class is allowed
obj._allowed = 1
with self.assertRaises(AttributeError):
# Setting a public field on a Java class is forbidden
obj.forbidden = 1
def testSetAttrFinal(self):
cls = JClass('java.lang.Long')
obj = cls(1)
with self.assertRaises(AttributeError):
# Setting a final field is forbidden
obj.SIZE = 1
def testClass(self):
obj = JClass('java.lang.Long')
clsType = JClass('java.lang.Class')
# Get class must return a java.lang.Class instance belonging to the class
self.assertIsInstance(obj.class_, clsType)
self.assertEqual(obj.class_.getSimpleName(), "Long")
def testGetAttrProperty(self):
obj = JClass('java.lang.RuntimeException')('oo')
value = obj.args
self.assertEqual(value, ('oo',))
def testSetAttrProperty(self):
obj = JClass('java.lang.RuntimeException')('oo')
with self.assertRaises(AttributeError):
obj.args = 1
def testAttrStaticField(self):
self.fixture.static_object_field = "fred"
self.assertEqual(self.fixture.static_object_field, "fred")
def testGetAttrField(self):
v = self.fixture.object_field
def testSetAttrField(self):
self.fixture.object_field = "fred"
def testGetAttrPrivateField(self):
with self.assertRaises(AttributeError):
v = self.fixture.private_object_field
def testSetAttrPrivateField(self):
with self.assertRaises(AttributeError):
self.fixture.private_object_field = "fred"
def testGetAttrFinalField(self):
v = self.fixture.final_object_field
def testSetAttrFinalField(self):
with self.assertRaises(AttributeError):
self.fixture.final_object_field = "fred"
def testGetAttrStaticFinalField(self):
self.assertEqual(self.fixture.final_static_object_field,
"final static object field")
def testSetAttrStaticFinalField(self):
with self.assertRaises(AttributeError):
self.fixture.finalStaticObjectField = "bar"
def testStaticMethod(self):
self.fixture.callStaticObject(JObject())
def testPrivateStaticMethod(self):
with self.assertRaises(AttributeError):
self.fixture.callPrivateStaticObject(JObject())
def testMethod(self):
self.fixture.callObject(JObject())
def testPrivateMethod(self):
with self.assertRaises(AttributeError):
self.fixture.callPrivateObject(JObject())
def testProtectedMethod(self):
with self.assertRaises(AttributeError):
self.fixture.callProtectedObject(JObject())
def testObjectBoolTrue(self):
self.fixture.object_field = True
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Boolean'))
self.assertEqual(str(self.fixture.object_field), str(True))
self.assertEqual(self.fixture.object_field, True)
def testObjectBoolFalse(self):
self.fixture.object_field = False
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Boolean'))
self.assertEqual(str(self.fixture.object_field), str(False))
self.assertEqual(self.fixture.object_field, False)
def testObjectBoolJValue(self):
self.fixture.object_field = JBoolean(True)
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Boolean'))
self.assertEqual(self.fixture.object_field, True)
def testObjectShort(self):
self.fixture.object_field = JShort(1)
self.assertEqual(self.fixture.object_field, 1)
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Short'))
def testObjectInteger(self):
self.fixture.object_field = JInt(2)
self.assertEqual(self.fixture.object_field, 2)
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Integer'))
def testObjectLong(self):
self.fixture.object_field = JLong(3)
self.assertEqual(self.fixture.object_field, 3)
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Long'))
def testObjectFloat(self):
self.fixture.object_field = JFloat(1.125)
self.assertEqual(self.fixture.object_field, 1.125)
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Float'))
def testObjectDouble(self):
self.fixture.object_field = JDouble(2.6125)
self.assertEqual(self.fixture.object_field, 2.6125)
self.assertIsInstance(self.fixture.object_field,
JClass('java.lang.Double'))
def testObjectField(self):
with self.assertRaises(TypeError):
self.fixture.object_field = object()
with self.assertRaises(TypeError):
self.fixture.static_object_field = object()
def testArraySetRangeFail(self):
ja = JArray(JObject)(4)
with self.assertRaises(TypeError):
ja[:] = [1, 2, object(), 3]
ja[:] = [1, 2, 3, 4]
@common.requireInstrumentation
def testArraySetRangeFault(self):
_jpype.fault("JPClass::setArrayRange")
ja = JArray(JObject)(4)
with self.assertRaisesRegex(SystemError, "fault"):
ja[:] = [1, 2, 3, 4]
def testAssignClass(self):
self.fixture.object_field = JClass("java.lang.StringBuilder")
self.assertIsInstance(self.fixture.object_field, jpype.java.lang.Class)
self.assertEqual(self.fixture.object_field,
JClass("java.lang.StringBuilder"))
@common.requireInstrumentation
def testSetFinalField(self):
_jpype.fault("JPField::setStaticAttribute")
with self.assertRaisesRegex(SystemError, "fault"):
self.fixture.static_object_field = None
def testHashNone(self):
self.assertEqual(hash(JObject(None)), hash(None))
def testStrPrimitive(self):
with self.assertRaisesRegex(TypeError, "requires a Java object"):
_jpype._JObject.__str__(JInt(1))
def testGetAttrFail(self):
jo = JClass("java.lang.Object")()
with self.assertRaisesRegex(TypeError, "must be string"):
getattr(jo, object())
def testSetAttrFail(self):
jo = JClass("java.lang.Object")()
with self.assertRaisesRegex(TypeError, "must be string"):
setattr(jo, object(), 1)
def testSetAttrFail2(self):
fixture = JClass("jpype.common.Fixture")()
with self.assertRaisesRegex(AttributeError, "is not settable"):
setattr(fixture, "callObject", 4)
def testJavaPrimitives(self):
self.assertIsInstance(
self.fixture.callObject(JByte(1)), java.lang.Byte)
self.assertIsInstance(
self.fixture.callObject(JShort(1)), java.lang.Short)
self.assertIsInstance(
self.fixture.callObject(JInt(1)), java.lang.Integer)
self.assertIsInstance(
self.fixture.callObject(JLong(1)), java.lang.Long)
self.assertIsInstance(
self.fixture.callObject(JFloat(1)), java.lang.Float)
self.assertIsInstance(self.fixture.callObject(
JDouble(1)), java.lang.Double)
def testPythonPrimitives(self):
self.assertIsInstance(self.fixture.callObject(1), java.lang.Long)
self.assertIsInstance(self.fixture.callObject(1.0), java.lang.Double)
@common.requireNumpy
def testNumpyPrimitives(self):
self.assertIsInstance(
self.fixture.callObject(np.int8(1)), java.lang.Byte)
self.assertIsInstance(self.fixture.callObject(
np.int16(1)), java.lang.Short)
self.assertIsInstance(self.fixture.callObject(
np.int32(1)), java.lang.Integer)
self.assertIsInstance(self.fixture.callObject(
np.int64(1)), java.lang.Long)
self.assertIsInstance(self.fixture.callObject(
np.float32(1)), java.lang.Float)
self.assertIsInstance(self.fixture.callObject(
np.float64(1)), java.lang.Double)
def testCompare(self):
jo = JClass("java.lang.Object")()
with self.assertRaises(TypeError):
jo < 0
with self.assertRaises(TypeError):
jo <= 0
with self.assertRaises(TypeError):
jo > 0
with self.assertRaises(TypeError):
jo >= 0
def testCompareNull(self):
jo = JClass("java.lang.Object")
jv = JObject(None, jo)
self.assertEqual(jv, None)
self.assertEqual(None, jv)
self.assertNotEqual(JInt(1), jv)
self.assertNotEqual(jv, JInt(1))
def testRepr(self):
jo = JClass("java.lang.Object")
jv = jo()
jvn = JObject(None, jo)
self.assertIsInstance(repr(jv), str)
self.assertIsInstance(repr(jvn), str)
self.assertEqual(repr(jv), "<java object 'java.lang.Object'>")
self.assertEqual(repr(jvn), "<java object 'java.lang.Object'>")
def testDeprecated(self):
# this one should issue a warning
jo = JClass("java.lang.Object")
self.assertIsInstance(JObject(None, object), jo)
def testGetSetBad(self):
JS = JClass("java.lang.String")
js = JS()
with self.assertRaises(TypeError):
JS.__getattribute__(js, object())
with self.assertRaises(TypeError):
setattr(js, object(), 1)
def testGetSetBad_2(self):
jo = JClass("java.lang.Object")()
self.assertTrue(jo != JInt(0))
self.assertFalse(jo == JInt(0))
self.assertTrue(JInt(0) != jo)
self.assertFalse(JInt(0) == jo)
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