Synthetica look and feel throws a class cast exception when using JLayer with JscrollPane with Java 11. It works fine with Java 8. Is there a way to fix this?
Code example
public class TestFrame extends JFrame
{
TestFrame()
{
this.setSize(300,400);
this.getContentPane().setLayout(new FlowLayout());
JTextArea textArea = new JTextArea(20, 20);
JScrollPane scrollableTextArea = new JScrollPane(textArea);
LayerUI<JScrollPane> layerUI = new LayerUI();
JLayer<JScrollPane> jLayer = new JLayer(scrollableTextArea, layerUI);
this.add(jLayer);
}
public static void main(String[] args)
{
try
{
UIManager.setLookAndFeel(new SyntheticaAluOxideLookAndFeel());
TestFrame testFrame = new TestFrame();
testFrame.setVisible(true);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
Error stacktrace
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: class javax.swing.JLayer cannot be cast to class javax.swing.JScrollPane (javax.swing.JLayer and javax.swing.JScrollPane are in module java.desktop of loader 'bootstrap')
at de.javasoft.plaf.synthetica.painter.ScrollPanePainter.paintScrollPaneBorder(ScrollPanePainter.java:274)
at de.javasoft.plaf.synthetica.painter.SyntheticaPainter.paintScrollPaneBorder(SyntheticaPainter.java:640)
at java.desktop/javax.swing.plaf.synth.SynthScrollPaneUI.paintBorder(SynthScrollPaneUI.java:125)
at java.desktop/javax.swing.plaf.synth.SynthBorder.paintBorder(SynthBorder.java:63)
at java.desktop/javax.swing.JComponent.paintBorder(JComponent.java:967)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1075)
at java.desktop/javax.swing.JLayer.paint(JLayer.java:475)
at java.desktop/javax.swing.plaf.LayerUI.paint(LayerUI.java:80)
at java.desktop/javax.swing.plaf.ComponentUI.update(ComponentUI.java:161)
at java.desktop/javax.swing.JComponent.paintComponent(JComponent.java:797)
at java.desktop/javax.swing.JLayer.paint(JLayer.java:470)
at java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1083)
at java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907)
at java.desktop/javax.swing.JComponent.paint(JComponent.java:1083)
at java.desktop/javax.swing.JLayeredPane.paint(JLayeredPane.java:590)
at java.desktop/javax.swing.JComponent.paintChildren(JComponent.java:907)
at java.desktop/javax.swing.JComponent.paintToOffscreen(JComponent.java:5262)
It works fine with Java 8
The issue is fixed in V2.34.0 / V3.5.0.
Related
I am trying to test exception thrown from service when I use the instance of it.
Like I am trying to use Imock in Trans.class and use IMock method.
Below is the code
public class MockImpl implements IMock{
public String external(String str) throws Exception {
if(str.equals("throw")){
throw new Exception("Thrown exception.");
}
return str;
}
}
public class Trans {
private IMock mc;
public static int failed;
public String performTrans(String str) throws Exception {
return call(str);
}
private String call(String str) throws Exception {
mc = new MockImpl();
try {
return mc.external(str);
}
catch(Exception e){
failed++;
throw e;
}
}
}
In test class I am trying to do this
public class TestMock {
#Test
public void testMock() throws Exception {
Trans trans = mock(Trans.class);
IMock iMock = mock(IMock.class);
doThrow(new Exception()).when(iMock).external(any(String.class));
for(int i =0;i<10 ;i++){
trans.performTrans("any");
}
System.out.println(Trans.failed);
assertEquals(9, Trans.failed);
}
}
As I am new to this, I am not sure if my understanding is correct, what I am trying to achieve is
When I do # Trans.performTrans(String);
Then doThrow(new Exception()).when(iMock).external(any(String.class)); should happen. How can I tell Mockito or any test framework that The exception should be thrown should be simulated from the Imock service method, even if it is indirectly called.
UPDATE
After trying to test this way
#RunWith(MockitoJUnitRunner.class)
public class TestMock {
#Test
public void testMock() throws Exception {
Trans trans = new Trans();
IMock iMock = mock(IMock.class);
trans.setInter(iMock);
//doThrow(new Exception()).when(iMock).external(any(String.class));
trans.performTrans("abc");
verify(iMock).external(new String("a"));
System.out.println(Trans.failed);
assertEquals(9, Trans.failed);
}
}
I get this error.
Wanted but not invoked: iMock.external("a");
-> at com.app.TestMock.testMock(TestMock.java:32) Actually, there were zero interactions with this mock.
what could be wrong?
I have a Jersey (1.x) based REST service. It uses Jackson 2.4.4 to generate JSON responses. I need to add a newline character at the end of response (cURL users complain that there's no new line in responses). I am using Jersey pretty-print feature (SerializationFeature.INDENT_OUTPUT).
current: {\n "prop" : "value"\n}
wanted: {\n "prop" : "value"\n}\n
I tried using a custom serializer. I need to add \n only at the end of the root object. Serializer is defined per data type, which means, if an instance of such class is nested in a response, I will get \n in the middle of my JSON.
I thought of subclassing com.fasterxml.jackson.core.JsonGenerator.java, overriding close() where i'd add writeRaw('\n'), but that feels very hacky.
Another idea would be to add Servlet filter which would re-write the response from Jersey Filter, adding the \n and incrementing the contentLenght by 1. Seems not only hacky, but also inefficient.
I could also give up Jersey taking care of serializing the content and do ObjectMapper.writeValue() + "\n", but this is quite intrusive to my code (need to change many places).
What is the clean solution for that problem?
I have found these threads for the same problem, but none of them provides solution:
http://markmail.org/message/nj4aqheqobmt4o5c
http://jackson-users.ning.com/forum/topics/add-newline-after-object-serialization-in-jersey
Update
Finally I went for #arachnid's solution with NewlineAddingPrettyPrinter (also bumper Jackson version to 2.6.2). Sadly, it does not work out of the box with Jaskson as JAX-RS Json provider. Changed PrettyPrinter in ObjectMapper does not get propagated to JsonGenerator (see here why). To make it work, I had to add ResponseFilter which adds ObjectWriterModifier (now I can easily toggle between pretty-print and minimal, based on input param ):
#Provider
public class PrettyPrintFilter extends BaseResponseFilter {
public ContainerResponse filter(ContainerRequest request, ContainerResponse response) {
ObjectWriterInjector.set(new PrettyPrintToggler(true));
return response;
}
final class PrettyPrintToggler extends ObjectWriterModifier {
private static final PrettyPrinter NO_PRETTY_PRINT = new MinimalPrettyPrinter();
private final boolean usePrettyPrint;
public PrettyPrintToggler(boolean usePrettyPrint) {
this.usePrettyPrint = usePrettyPrint;
}
#Override
public ObjectWriter modify(EndpointConfigBase<?> endpoint, MultivaluedMap<String, Object> responseHeaders,
Object valueToWrite, ObjectWriter w, JsonGenerator g) throws IOException {
if (usePrettyPrint) g.setPrettyPrinter(new NewlineAddingPrettyPrinter());
else g.setPrettyPrinter(NO_PRETTY_PRINT);
return w;
}
}
}
Actually, wrapping up (not subclassing) JsonGenerator isn't too bad:
public static final class NewlineAddingJsonFactory extends JsonFactory {
#Override
protected JsonGenerator _createGenerator(Writer out, IOContext ctxt) throws IOException {
return new NewlineAddingJsonGenerator(super._createGenerator(out, ctxt));
}
#Override
protected JsonGenerator _createUTF8Generator(OutputStream out, IOContext ctxt) throws IOException {
return new NewlineAddingJsonGenerator(super._createUTF8Generator(out, ctxt));
}
}
public static final class NewlineAddingJsonGenerator extends JsonGenerator {
private final JsonGenerator underlying;
private int depth = 0;
public NewlineAddingJsonGenerator(JsonGenerator underlying) {
this.underlying = underlying;
}
#Override
public void writeStartObject() throws IOException {
underlying.writeStartObject();
++depth;
}
#Override
public void writeEndObject() throws IOException {
underlying.writeEndObject();
if (--depth == 0) {
underlying.writeRaw('\n');
}
}
// ... and delegate all the other methods of JsonGenerator (CGLIB can hide this if you put in some time)
}
#Test
public void append_newline_after_end_of_json() throws Exception {
ObjectWriter writer = new ObjectMapper(new NewlineAddingJsonFactory()).writer();
assertThat(writer.writeValueAsString(ImmutableMap.of()), equalTo("{}\n"));
assertThat(writer.writeValueAsString(ImmutableMap.of("foo", "bar")), equalTo("{\"foo\":\"bar\"}\n"));
}
A servlet filter isn't necessarily too bad either, although recently the ServletOutputStream interface has been more involved to intercept properly.
I found doing this via PrettyPrinter problematic on earlier Jackson versions (such as your 2.4.4), in part because of the need to go through an ObjectWriter to configure it properly: only fixed in Jackson 2.6. For completeness, this is a working 2.5 solution:
#Test
public void append_newline_after_end_of_json() throws Exception {
// Jackson 2.6:
// ObjectMapper mapper = new ObjectMapper()
// .setDefaultPrettyPrinter(new NewlineAddingPrettyPrinter())
// .enable(SerializationFeature.INDENT_OUTPUT);
// ObjectWriter writer = mapper.writer();
ObjectMapper mapper = new ObjectMapper();
ObjectWriter writer = mapper.writer().with(new NewlineAddingPrettyPrinter());
assertThat(writer.writeValueAsString(ImmutableMap.of()), equalTo("{}\n"));
assertThat(writer.writeValueAsString(ImmutableMap.of("foo", "bar")),
equalTo("{\"foo\":\"bar\"}\n"));
}
public static final class NewlineAddingPrettyPrinter
extends MinimalPrettyPrinter
implements Instantiatable<PrettyPrinter> {
private int depth = 0;
#Override
public void writeStartObject(JsonGenerator jg) throws IOException, JsonGenerationException {
super.writeStartObject(jg);
++depth;
}
#Override
public void writeEndObject(JsonGenerator jg, int nrOfEntries) throws IOException, JsonGenerationException {
super.writeEndObject(jg, nrOfEntries);
if (--depth == 0) {
jg.writeRaw('\n');
}
}
#Override
public PrettyPrinter createInstance() {
return new NewlineAddingPrettyPrinter();
}
}
Not yet tested but the following should work:
public class MyObjectMapper extends ObjectMapper {
_defaultPrettyPrinter = com.fasterxml.jackson.core.util.MinimalPrettyPrinter("\n");
// AND/OR
#Override
protected PrettyPrinter _defaultPrettyPrinter() {
return new com.fasterxml.jackson.core.util.MinimalPrettyPrinter("\n");
}
}
public class JerseyConfiguration extends ResourceConfig {
...
MyObjectMapper mapper = new MyObjectMapper();
mapper.enable(SerializationFeature.INDENT_OUTPUT); //enables pretty printing
// create JsonProvider to provide custom ObjectMapper
JacksonJaxbJsonProvider provider = new JacksonJaxbJsonProvider();
provider.setMapper(mapper);
register(provider); //register so that jersey use it
}
Do not know if this is the "cleanest" solution but it feels less hacky than the others.
Should produce something like
{\n "root" : "1"\n}\n{\n "root2" : "2"\n}
But it seems that does not work if there is only one root element.
Idea is from https://gist.github.com/deverton/7743979
I am trying to work with PowerMock, over Mockito; as I loved the API's for whennew() and verifyprivate() but i have some problem when trying to run testsuites with Categories TestRunner in Junit.
For using default JUnit test runners, I created a TestCase and added PowerMockRule as instance field with #Rule annotation. While execution of tests worked like this, ExpectedException TestRule is not working when used in conjunction
Example Code
#PowerMockIgnore ("*")
#PrepareForTest (CustomizedSSHConnection.class)
public class TestExpectedExceptionRule {
private Connection connection;
private ConnectionInfo connectionInfo;
#Rule
public PowerMockRule rule = new PowerMockRule ();
#Rule
public ExpectedException exception = ExpectedException.none ();
#Test
public void testExcepitonWithPowerMockRule() {
exception.expect (NullPointerException.class);
exception.expectMessage ("Image is null");
throw new NullPointerException ("Image is null");
}
}
Instead of using #Rule PowerMockRule if I use #RunWith(PowerMockRunner.class) this testcase will pass.
One other observation is if I annotate PowerMockRule with #ClassRule this succeeds but some of the mocking methods throwing exceptions.
PowerMock creates a deep clone of the TestExpectedExceptionRule object. Because of this it is running the test with a new ExpectedException rule, but you're calling exception.expect (NullPointerException.class) on the original rule. Hence the test fails, because the clone of the ExpectedException rule doesn't expect an exception.
Nevertheless there are at least two solutions for your problem.
RuleChain
Order the rules with JUnit's RuleChain. This needs some additional ugly code, but it works.
private ExpectedException exception = ExpectedException.none ();
private PowerMockRule powerMockRule = new PowerMockRule();
#Rule
public TestRule ruleChain = RuleChain.outerRule(new TestRule() {
#Override
public Statement apply(Statement base, Description description) {
return powerMockRule.apply(base, null, description);
}
}).around(exception);
Fishbowl
If you are using Java 8 then you can replace the ExpectedException rule with the Fishbowl library.
#Test
public void testExcepitonWithPowerMockRule() {
Throwable exception = exceptionThrownBy(
() -> throw new NullPointerException ("Image is null"));
assertEquals(NullPointerException.class, exception.getClass());
assertEquals("Image is null", exception.getMessage());
}
Without Java 8, you have to use an anonymous class.
#Test
public void fooTest() {
Throwable exception = exceptionThrownBy(new Statement() {
public void evaluate() throws Throwable {
throw new NullPointerException ("Image is null");
}
});
assertEquals(NullPointerException.class, exception.getClass());
assertEquals("Image is null", exception.getMessage());
}
I was able to fix this using the expected attribute in the #Test annotation. But the problem with this approach is that am unable to assert the exception message. Which is fine for me for now.
#PowerMockIgnore ("*")
#PrepareForTest (CustomizedSSHConnection.class)
public class TestExpectedExceptionRule {
private Connection connection;
private ConnectionInfo connectionInfo;
#Rule
public PowerMockRule rule = new PowerMockRule ();
#Rule
public ExpectedException exception = ExpectedException.none ();
#Test(expected = NullPointerException.class)
public void testExcepitonWithPowerMockRule() {
throw new NullPointerException ("Image is null");
}
}
I solved this problem by creating a PowerMockTestUtil class that uses a FunctionalInterface.
Utility class:
/**
* Utility class to provide some testing functionality that doesn't play well with Powermock out
* of the box. For example, #Rule doesn't work well with Powermock.
*/
public class PowerMockTestUtil {
public static void expectException(RunnableWithExceptions function, Class expectedClass, String expectedMessage) {
try {
function.run();
fail("Test did not generate expected exception of type " + expectedClass.getSimpleName());
} catch (Exception e) {
assertTrue(e.getClass().isAssignableFrom(expectedClass));
assertEquals(expectedMessage, e.getMessage());
}
}
#FunctionalInterface
public interface RunnableWithExceptions<E extends Exception> {
void run() throws E;
}
}
Sample test:
#Test
public void testValidateMissingQuantityForNewItem() throws Exception {
...
expectException(() -> catalogEntryAssociationImporter.validate(line),
ImportValidationException.class,
"Quantity is required for new associations");
}
Iam working on mockito testcases positive test methods are getting executed but comming to Exception Test methods its failing with the Exception
java.lang.Exception: Unexpected exception, expected<com.apple.ist.retail.xcard.common.exception.InvalidArgumentException> but was<org.jboss.resteasy.client.ClientResponseFailure>
at
Below is the test method which is failing and its parent class containing client object
package com.apple.ist.retail.xcard.ws.exception;
public class TestActivatePrepaidCard extends CertificateResourceTestCase {
public TestActivatePrepaidCard(String aMediaType) {
super(aMediaType);
}
#Before
public void setUp() {
super.setUp();
}
#Test(expected = InvalidArgumentException.class)
public void testActivatePrepaidCard_InvalidArgumentException()
throws DuplicateCertificateIDException, InvalidArgumentException,
DupTxnRefException, AmountException, SystemException,
XCardException {
when(
server.activatePrepaidCard(any(DiagnosticContext.class),
any(String.class), any(Number.class),
any(Amount.class), any(String.class), any(int.class),
any(HashMap.class), any(String.class),
any(SalesOrg.class), any(TxnRef.class))).thenThrow(
new InvalidArgumentException("Invalid Argument ",
INVALID_ARGUMENT));
client.activatePrepaidCard(certificateRequest);
}
Its failing near client.activatePrepaidCard(certificateRequest); with ClientResponseFailure Exception
Parent test case is
package com.apple.ist.retail.xcard.ws.exception;
#RunWith(value = Parameterized.class)
public abstract class CertificateResourceTestCase extends Assert {
protected CertificateResource client;
protected XCardServiceServer server;
protected CertificateResource resource;
protected CertificateRequest certificateRequest;
// protected Dispatcher dispatcher = MockDispatcherFactory.createDispatcher();
private String mediaType;
public CertificateResourceTestCase(String aMediaType) {
this.mediaType = aMediaType;
server = mock(XCardServiceServer.class);
CertificateResourceImpl xcardServiceRs = new CertificateResourceImpl();
xcardServiceRs.setService(server);
Dispatcher dispatcher = MockDispatcherFactory.createDispatcher();
dispatcher.getRegistry().addSingletonResource(xcardServiceRs);
dispatcher.getProviderFactory().addExceptionMapper(
XCardExceptionMapper.class);
dispatcher.getProviderFactory().addExceptionMapper(
BusinessExceptionMapper.class);
dispatcher.getProviderFactory().addExceptionMapper(
RuntimeExceptionMapper.class);
dispatcher.getProviderFactory().addExceptionMapper(
BusinessExceptionMapper.class);
dispatcher.getProviderFactory().addExceptionMapper(
RuntimeExceptionMapper.class);
dispatcher.getProviderFactory()
.getServerMessageBodyWriterInterceptorRegistry()
.register(new XCardTxnWriterInterceptor());
dispatcher.getProviderFactory().getContextDataMap()
.put(HttpServletRequest.class, new MockHttpServletRequest());
client = ProxyFactory.create(CertificateResource.class, "/", new InMemoryClientExecutor(dispatcher));
diagnosticContext.setReportingRecommended(false);
}
#After
public void tearDown() throws Exception {
Mockito.reset(server);
}
Please let me know whats wrong in my code,I am pasting complete code so that I will not miss any detail
Your code is throwing an ClientResponseFailure. Debug your test and find out why. Use an exception breakpoint.
I have built a gui with javafx and swing and when I add an action listener to parse the expression in a textfield I get a error, I am not sure what the problem is.
the error is:
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
at functionparsergui.Test.parseFunction(Test.java:110)
at functionparsergui.Test.access$000(Test.java:38)
at functionparsergui.Test$2.actionPerformed(Test.java:88)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
at java.awt.Component.processMouseEvent(Component.java:6505)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6270)
at java.awt.Container.processEvent(Container.java:2229)
at java.awt.Component.dispatchEventImpl(Component.java:4861)
at java.awt.Container.dispatchEventImpl(Container.java:2287)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
at java.awt.Container.dispatchEventImpl(Container.java:2273)
at java.awt.Window.dispatchEventImpl(Window.java:2719)
at java.awt.Component.dispatchEvent(Component.java:4687)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:729)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:688)
at java.awt.EventQueue$3.run(EventQueue.java:686)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
at java.awt.EventQueue$4.run(EventQueue.java:702)
at java.awt.EventQueue$4.run(EventQueue.java:700)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:699)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)
Caused by: java.lang.UnsupportedOperationException: java.io.InvalidClassException: org.antlr.v4.runtime.atn.ATN; Could not deserialize ATN with version 3 (expected 2).
at org.antlr.v4.runtime.atn.ATNSimulator.deserialize(ATNSimulator.java:114)
at edu.chrr.util.function.FunctionLexer.<clinit>(FunctionLexer.java:504)
... 39 more
Caused by: java.io.InvalidClassException: org.antlr.v4.runtime.atn.ATN; Could not deserialize ATN with version 3 (expected 2).
... 41 more
My code starting from declaring the actionlistener is as follows:
ActionListener clearField = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
exprField.setText("");
JOptionPane.showMessageDialog(frame, "Input Cleared");
}
};
clearButton.addActionListener(clearField);
ActionListener parserButton;
parserButton = new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
String expression = exprField.getText();
String nowhiteExpr = expression.replaceAll("\\s+", "");
parseFunction(nowhiteExpr, frame);
}
};
parseButton.addActionListener(parserButton);
Platform.runLater(new Runnable() {
#Override
public void run() {
initFX(fxPanel);
}
});
}
private static void parseFunction(final String function, final JFrame frame) {
try {
ANTLRInputStream input = new ANTLRInputStream(function);
FunctionLexer lexer = new FunctionLexer(input);
CommonTokenStream tokens = new CommonTokenStream((TokenSource) lexer);
FunctionParser parser = new FunctionParser(tokens);
parser.start();
int errorsCount = parser.getNumberOfSyntaxErrors();
if (errorsCount == 0) {
JOptionPane.showMessageDialog(frame, "Syntax is Correct");
} else {
Token t = parser.getCurrentToken();
String msg = "Syntax Incorrect: Missing " + t.getText();
JOptionPane.showMessageDialog(frame, msg);
}
} catch (RecognitionException ex) {
JOptionPane.showMessageDialog(frame, "Syntax is Incorrect");
}
}
private static void initFX(JFXPanel fxPanel) {
// This method is invoked on the JavaFX thread
Scene scene = createScene();
fxPanel.setScene(scene);
}
private static Scene createScene() {
Group root = new Group();
Scene scene = new Scene(root, Color.ALICEBLUE);
return (scene);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
initAndShowGUI();
}
});
}
}
ANTLR 4.1 is not compatible with ANTLR 4.0. You are generating your code with ANTLR 4.1 but attempting to run it with the ANTLR 4.0 runtime library.