UnsupportedOperationException when mocking com.fazecast.jSerialComm.SerialPort with PowerMockito - serial-port

Question

I am trying to write some test for my PortHandler class.
When trying to mock SerialPort object I get following exception:
java.lang.UnsupportedOperationException: initializeLibrary is native
at com.fazecast.jSerialComm.SerialPort.initializeLibrary(SerialPort.java)
at com.fazecast.jSerialComm.SerialPort.<clinit>(SerialPort.java:238)
at sun.reflect.GeneratedSerializationConstructorAccessor8.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator.newInstance(SunReflectionFactoryInstantiator.java:48)
at org.objenesis.ObjenesisBase.newInstance(ObjenesisBase.java:73)
at org.mockito.internal.creation.instance.ObjenesisInstantiator.newInstance(ObjenesisInstantiator.java:19)
at org.mockito.internal.creation.bytebuddy.SubclassByteBuddyMockMaker.createMock(SubclassByteBuddyMockMaker.java:47)
at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.createMock(ByteBuddyMockMaker.java:25)
at org.powermock.api.mockito.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:41)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:69)
at org.mockito.Mockito.mock(Mockito.java:1895)
at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.createMethodInvocationControl(DefaultMockCreator.java:108)
at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.doCreateMock(DefaultMockCreator.java:61)
at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.createMock(DefaultMockCreator.java:53)
at org.powermock.api.mockito.internal.mockcreation.DefaultMockCreator.mock(DefaultMockCreator.java:40)
at org.powermock.api.mockito.PowerMockito.mock(PowerMockito.java:126)
at com.project.serial.PortHandlerTest.testClosePort(PortHandlerTest.java:72)
My Test class :
#RunWith(PowerMockRunner.class)
#PrepareForTest({SerialPort.class})
public class PortHandlerTest{
#Mock
SerialPortMessageListener mockedPortListener;
#Mock
OutputStream mockedOS;
PortHandler portHandler;
#Test
public void testConnect() {
String portName = "testPort";
SerialPort mockedPort = PowerMockito.mock(SerialPort.class);
PowerMockito.mockStatic(SerialPort.class);
Mockito.when(SerialPort.getCommPort(portName)).thenReturn(mockedPort);
Mockito.when(mockedPort.getOutputStream()).thenReturn(mockedOS);
portHandlerService = new PortHandlerServiceImpl(portName, mockedPortListener);
portHandlerService.connect();
}
Line 53 is SerialPort mockedPort = PowerMockito.mock(SerialPort.class);
List of my dependencies :
junit 4.12
mockito-core 2.22.0
powermock-api-mockito2 2.0.0-beta.5
powermock-module-junit4 2.0.0-beta.5
Even after throwing an exception the execution continues and I get valid test results.
Thanks for help
PacHOOk