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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.
#
# *****************************************************************************
# part of JPype1; author Martin K. Scherer; 2014
# from unittest import mock
import os
import pathlib
import sys
import unittest
from unittest import mock
from jpype._jvmfinder import (LinuxJVMFinder, JVMNotSupportedException, DarwinJVMFinder,
WindowsJVMFinder)
class JVMFinderTest(unittest.TestCase):
"""
test some methods to obtain a jvm.
TODO: add windows (need to mock registry)
"""
def test_find_libjvm(self):
"""
test JVMFinder.find_libjvm does not return broken jvm implementation.
"""
walk_fake = [('jre', ('lib',), ()),
('jre/lib', ('amd64',), ()),
('jre/lib/amd64',
# cacoa and jamvm are not supported.
('cacao', 'jamvm', 'server'), ()),
('jre/lib/amd64/cacao',
('',), ('libjvm.so',)),
('jre/lib/amd64/jamvm',
('',), ('libjvm.so',)),
('jre/lib/amd64/server',
('',), ('libjvm.so',)),
]
with mock.patch('os.walk') as mockwalk:
# contains broken and working jvms
mockwalk.return_value = walk_fake
finder = LinuxJVMFinder()
p = finder.find_libjvm('arbitrary java home')
# cacoa and javmvm should not be found
self.assertEqual(
p, os.path.join('jre/lib/amd64/server', 'libjvm.so'), 'wrong jvm returned')
def test_find_libjvm_unsupported_jvm(self):
"""Checks for the case only unsupported JVM impls are being found."""
walk_fake = [('jre', ('lib',), ()),
('jre/lib', ('amd64',), ()),
('jre/lib/amd64',
# cacoa and jamvm are not supported.
('cacao', 'jamvm', ), ()),
('jre/lib/amd64/cacao',
('',), ('libjvm.so',)),
('jre/lib/amd64/jamvm',
('',), ('libjvm.so',)),
]
with mock.patch('os.walk') as mockwalk:
# contains broken and working jvms
mockwalk.return_value = walk_fake
finder = LinuxJVMFinder()
with self.assertRaises(JVMNotSupportedException):
finder.find_libjvm('arbitrary java home')
@mock.patch('os.walk')
@mock.patch('os.path.exists')
@mock.patch('os.path.realpath')
def test_get_from_bin(self, mock_real_path, mock_path_exists, mock_os_walk):
"""
test _get_from_bin method (used in linux and darwin)
'/usr/bin/java' => some jre/jdk path
"""
java_path = '/usr/lib/jvm/java-6-openjdk-amd64/bin/java'
mock_os_walk.return_value = [
('/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server', ('',), ('libjvm.so',))]
mock_path_exists.return_value = True
mock_real_path.return_value = '/usr/lib/jvm/java-6-openjdk-amd64/bin/java'
finder = LinuxJVMFinder()
p = finder._get_from_bin()
self.assertEqual(
p, os.path.join('/usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/server', 'libjvm.so'))
@mock.patch('platform.mac_ver')
def testDarwinBinary(self, mock_mac_ver):
# this version has java_home binary
mock_mac_ver.return_value = ('10.6.8', '', '')
expected = '/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home\n'
finder = DarwinJVMFinder()
# fake check_output
with mock.patch('subprocess.check_output') as mock_checkoutput:
mock_checkoutput.return_value = expected
p = finder._javahome_binary()
self.assertEqual(p, expected.strip())
# this version has no java_home binary
mock_mac_ver.return_value = ('10.5', '', '')
p = finder._javahome_binary()
self.assertEqual(p, None)
def testLinuxGetFromBin(self):
finder = LinuxJVMFinder()
def f(s):
return s
with mock.patch('os.path') as pathmock, \
mock.patch('jpype._jvmfinder.JVMFinder.find_libjvm') as mockfind:
pathmock.exists.return_value = True
pathmock.realpath = f
pathmock.abspath = f
pathmock.dirname = os.path.dirname
pathmock.join = os.path.join
finder._get_from_bin()
self.assertEqual(
pathmock.dirname.mock_calls[0][1], (finder._java,))
@unittest.skipIf(sys.platform != "win", "only on windows")
def testWindowsRegistry(self):
finder = WindowsJVMFinder()
jvm_home = pathlib.Path(finder.get_jvm_path())
assert jvm_home.exists()
assert jvm_home.is_dir()
if __name__ == '__main__':
unittest.main()
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