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#*****************************************************************************
# Copyright 2004-2008 Steve Menard
#
# 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.
#
#*****************************************************************************
from jpype import JPackage, java, JFloat, JByte, JShort, JInt, JLong
from . import common
import sys
class NumericTestCase(common.JPypeTestCase):
def testMathAbs(self):
self.assertEqual(java.lang.Math.abs(-10), 10)
def testDoubleConversion(self):
f = java.lang.Float.MAX_VALUE * 2
jpype = JPackage("jpype")
self.assertTrue(jpype.numeric.NumericTest.doubleIsTwiceMaxFloat(f))
def testDoubleIsProperlyConverted(self):
self.assertTrue(java.lang.Double.POSITIVE_INFINITY != 0.0)
self.assertTrue(java.lang.Double.MAX_VALUE != 0.0)
self.assertTrue(java.lang.Double.NaN != 0.0)
self.assertTrue(java.lang.Double.NEGATIVE_INFINITY != 0.0)
def testNegativeJFloatWrapper(self):
f = JFloat(-1)
def checkJWrapper(self, min_value, max_value, javawrapper, jwrapper, expected=TypeError):
self.assertEqual(max_value, javawrapper(max_value).longValue())
f = jwrapper(max_value)
self.assertEqual(max_value, javawrapper(f).longValue())
self.assertEqual(min_value, javawrapper(min_value).longValue())
f = jwrapper(min_value)
self.assertEqual(min_value, javawrapper(f).longValue())
self.assertRaises(expected, javawrapper, max_value+1)
self.assertRaises(expected, jwrapper, max_value+1)
self.assertRaises(expected, javawrapper, min_value-1)
self.assertRaises(expected, jwrapper, min_value-1)
# test against int overflow
if(max_value < 2**32):
self.assertRaises(expected, javawrapper, 2**32)
self.assertRaises(expected, jwrapper, 2**32)
def testJCharWrapper(self):
self.checkJWrapper(-2**7, 2**7-1, java.lang.Byte, JByte)
def testJByteWrapper(self):
self.checkJWrapper(-2**7, 2**7-1, java.lang.Byte, JByte)
def testJShortWrapper(self):
self.checkJWrapper(-2**15, 2**15-1, java.lang.Short, JShort)
def testJIntWrapper(self):
self.checkJWrapper(-2**31, 2**31-1, java.lang.Integer, JInt)
def testJLongWrapper(self):
self.checkJWrapper(-2**63, 2**63-1, java.lang.Long, JLong, OverflowError)
def testJFloatWrapper(self):
jwrapper = JFloat
javawrapper = java.lang.Float
jwrapper(float(2**127))
javawrapper(float(2**127))
self.assertRaises(TypeError, jwrapper, float(2**128))
#self.assertRaisesRegexp(RuntimeError, 'No matching overloads found', javawrapper, 5) # no conversion from int?
# this difference might be undesirable,
# a double bigger than maxfloat passed to java.lang.Float turns into infinity
self.assertEquals(float('inf'), javawrapper(float(2**128)).doubleValue())
self.assertEquals(float('-inf'), javawrapper(float(-2**128)).doubleValue())
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