I'm testing Tinkerpop frames. I have a relationship similar to Person Knows Person but everytime I test my code it gives me this error
com.orientechnologies.orient.core.exception.OSchemaException: Cannot change the schema while a transaction is active. Schema changes are not transactional
at com.orientechnologies.orient.core.metadata.schema.OSchemaShared.saveInternal(OSchemaShared.java:956)
at com.orientechnologies.orient.core.metadata.schema.OSchemaShared.releaseSchemaWriteLock(OSchemaShared.java:751)
at com.orientechnologies.orient.core.metadata.schema.OSchemaShared.doCreateClass(OSchemaShared.java:385)
at com.orientechnologies.orient.core.metadata.schema.OSchemaShared.createClass(OSchemaShared.java:314)
at com.orientechnologies.orient.core.metadata.schema.OSchemaProxy.createClass(OSchemaProxy.java:77)
at com.tinkerpop.blueprints.impls.orient.OrientElement$1.call(OrientElement.java:469)
at com.tinkerpop.blueprints.impls.orient.OrientElement$1.call(OrientElement.java:465)
at com.tinkerpop.blueprints.impls.orient.OrientBaseGraph.executeOutsideTx(OrientBaseGraph.java:1658)
at com.tinkerpop.blueprints.impls.orient.OrientElement.checkForClassInSchema(OrientElement.java:465)
at com.tinkerpop.blueprints.impls.orient.OrientEdge.getClassName(OrientEdge.java:474)
at com.tinkerpop.blueprints.impls.orient.OrientEdge.createDocument(OrientEdge.java:511)
at com.tinkerpop.blueprints.impls.orient.OrientEdge.convertToDocument(OrientEdge.java:441)
at com.tinkerpop.blueprints.impls.orient.OrientEdge.setProperty(OrientEdge.java:314)
at com.tinkerpop.frames.annotations.PropertyAnnotationHandler.processElement(PropertyAnnotationHandler.java:34)
at com.tinkerpop.frames.annotations.PropertyAnnotationHandler.processElement(PropertyAnnotationHandler.java:11)
at com.tinkerpop.frames.FramedElement.invoke(FramedElement.java:89)
at com.sun.proxy.$Proxy7.setWeight(Unknown Source)
at com.spicegraph.test.domain.test.DbTest.addNewStuffToDb(DbTest.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
I'm using OrientDb as the graph provider. What could have possible gone wrong?
Here is my code:
public interface Ingredient extends VertexFrame{
#Property("name")
public String getName();
#Property("name")
public void setName(String name);
#Adjacency(label="usedwith", direction=Direction.BOTH)
public Iterable<Ingredient> getUsedWithIngredient();
#Adjacency(label = "usedwith")
public Ingredient addUsedWithNewIngredient();
#Incidence(label = "usedwith")
public UsedWithEdge addUsedWithIngredient(final Ingredient person);
#Adjacency(label = "usedwith")
public void removeUsedWithIngredient(final Ingredient person);
#Incidence(label = "usedwith")
public void removeUsedWith(final UsedWithEdge usedWith);
}
public interface UsedWithEdge extends EdgeFrame {
#Property("weight")
public void setWeight(int weight);
#Property("weight")
public int getWeight();
#OutVertex
Ingredient getOutIngredient();
#InVertex
Ingredient getInIngredient();
}
and this is a snippet of the test case
Ingredient v1=framedGraph.addVertex(null, Ingredient.class);
Ingredient v2=framedGraph.addVertex(null, Ingredient.class);
v1.setName("cumin");
v1.setConservAndStoring("conservation yearly");
v1.setPrepAndUse("prep prep ");
v2.setName("cinnamon");
v2.setAbout("about is about");
v2.setConservAndStoring("conservation is daily");
UsedWithEdge edge=v2.addUsedWithIngredient(v2);
edge.setWeight((1)); // << error is thrown here !!
framedGraph.getBaseGraph().commit();
This is an OrientDb problem. I used OrientGraphNoTx
OrientGraphNoTx graph=new OrientDbGenericDao().graphInstance();
FramedGraphFactory factory = new FramedGraphFactory(); // make sure you reuse the factory when creating new framed graphs.
framedGraph = factory.create(graph); // wrap the base graph
and it worked pretty well.
Related
I am deleloping a small spring and hibernate program, And i want to get sum of values from database. For that i written below code
public double getDataFromDb(String num) {
Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
double result=0;
Query getSumquery=(Query)session.createQuery("select sum(amount) from User_Master where =:num");
getSumquery.setParameter("num",num);
List list =getSumquery.list();
result=(double) list.get(0);
tx.commit();
Here i am getting exception in list line.When running from junit testcasethe Exception is like below
org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.abc.process.hbmfiles.Number.num
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:35)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:183)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:3596)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:3312)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:181)
at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:218)
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:397)
at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:87)
at org.hibernate.param.NamedParameterSpecification.bind(NamedParameterSpecification.java:38)
at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:491)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1563)
at org.hibernate.loader.Loader.doQuery(Loader.java:673)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2213)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at com.creditprocess.daoimpl.EvaluationDAOImpl.getCrtTotal(EvaluationDAOImpl.java:294)
at com.creditprocess.managerimpl.EvaluationManagerImpl.saveData(EvaluationManagerImpl.java:264)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
at com.sun.proxy.$Proxy28.saveData(Unknown Source)
at EvaluationTest.sendDetails(EvaluationTest.java:150)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.IllegalArgumentException: Can not set java.lang.String field com.caja.creditprocess.hbmfiles.Doi_Master.dni to java.lang.String
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167)
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171)
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:58)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:36)
at java.lang.reflect.Field.get(Field.java:393)
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:32)
... 62 more
These are my entities
User_Master.java
#Entity
#Table(name="User_Master")
public class User_Master implements Serializable{
#Id
#Column(name="User_master_id")
private String user_master_id;
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name="num")
private Number num;
}
Number.java
#Entity
#Table(name="Number")
public class Number implements Serializable{
#Id
#Column(name="num")
private String num;
}
If you are using conditional statement then you have to define some condition after where so here I think You are mission your Entity Variable (num) reference....
public double getDataFromDb(String num) {
Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
double result=0;
Query getSumquery=(Query)session.createQuery("select sum(u.amount) from User_Master u where u.num =:num");
getSumquery.setParameter("num",num);
List list =getSumquery.list();
result=(double) list.get(0);
tx.commit();
}
While using reflection, I also faced the same problem and the mistake I have done was instead of writing:
Arrays.asList(object.getClass().getDeclaredFields()).forEach(field -> {
field.setAccessible(true);
try {
System.out.pringln(String.valueOf(field.get(object)));
} catch (IllegalAccessException e) {
e.printStackTrace();
}
});
I wrote:
Arrays.asList(object.getClass().getDeclaredFields()).forEach(field -> {
field.setAccessible(true);
try {
System.out.pringln(String.valueOf(field.get(object.getField())));
} catch (IllegalAccessException e) {
e.printStackTrace();
}
});
meaning to say that I tried to get objects field while giving its value as an argument.
Here's my unit test that I expect to pass:
import static org.junit.Assert.assertEquals;
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.junit.Test;
import com.google.common.collect.ImmutableSet;
public class JMockTest {
#Test
public void test() {
Mockery mockery = new Mockery();
final Foo foo = mockery.mock(Foo.class);
mockery.checking(new Expectations() {{
oneOf(foo).bar(); will(returnValue(ImmutableSet.<Long>of()));
}});
ImmutableSet<Long> result = foo.bar();
assertEquals(ImmutableSet.<Long>of(), result);
}
interface Foo {
ImmutableSet<Long> bar();
}
}
However, it throws this error instead:
java.lang.reflect.UndeclaredThrowableException
at $Proxy3.bar(Unknown Source)
at JMockTest$1.<init>(JMockTest.java:17)
at JMockTest.test(JMockTest.java:16)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.IllegalAccessException: Class org.jmock.internal.ReturnDefaultValueAction can not access a member of class com.google.common.collect.ImmutableSet with modifiers ""
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
at java.lang.Class.newInstance(Class.java:436)
at org.jmock.internal.ReturnDefaultValueAction.collectionOrMapInstanceFor(ReturnDefaultValueAction.java:87)
at org.jmock.internal.ReturnDefaultValueAction.invoke(ReturnDefaultValueAction.java:77)
at org.jmock.internal.InvocationToExpectationTranslator.invoke(InvocationToExpectationTranslator.java:20)
at org.jmock.internal.FakeObjectMethods.invoke(FakeObjectMethods.java:38)
at org.jmock.lib.JavaReflectionImposteriser$1.invoke(JavaReflectionImposteriser.java:33)
... 26 more
It seems that JMock is internally attempting to instantiate an ImmutableSet, even though I provided one for it.
See ReturnDefaultValueAction:
private Object collectionOrMapInstanceFor(Class<?> returnType) throws Throwable {
return returnType.isInterface() ? instanceForCollectionType(returnType) : returnType.newInstance();
}
returnType.isInterface() is false b/c it's a ImmutableSet, so JMock calls ImmutableSet.newInstance(), which fails b/c ImmutableSet does not have an accessible constructor.
I assume that people other than me have mocked interfaces that return guava immutable collection objects before, or interfaces that return classes with no visible constructor. How do you deal with this in JMock?
EDIT: This is JMock 2.6.0
EDIT2: This works in JMock 2.8.2!
This seems like a bug with your version of JMock, 2.6.0, as you've described it. Upgrade to the latest, currently 2.8.2. The issue will go away.
I am using Jetty client API on my application and I want to test my following code using Junit and Mockito:
public void startHttpClient(){
try {
httpClient.start();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
My test case is the following:
#Mock HttpClient httpClient;
#Before
public void setUp() {
MockitoAnnotations.initMocks(this);
testBackend= new TestBackend(3,httpClient);
}
#Test
public void teststartHttpClient() throws Exception {
testBackend.startHttpClient();
assertNotNull(httpClient);
verify(httpClient,atLeastOnce()).start();
}
The problem is that the Mock HttpClient inherit the start() method from AbstractLifeCycle, so I got a null pointer exception on the AbstractLifeCycle class:
How can I mock the inherited method start() call fot the class HttpClient?
The Exception got:
java.lang.NullPointerException
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:61)
at test.TestBackendTest.teststartHttpClient(TestBackendTest.java:75)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
I am trying to write a test-case without using a ZUL file for now. I have a very basic function with the following lines.
Class to initialize Listbox:
public class TestComposer {
public void listboxTest(){
ListModelList model = new ListModelList();
Listbox lbOne = new Listbox();
lbOne.setModel(model);
lbOne.setMultiple(true);
System.out.println(lbOne);
System.out.println(model);
}
}
Test-case
public class testSuit {
static ZatsEnvironment env;
#BeforeClass
public static void init() {
System.out.println("Setting server space.");
env = new DefaultZatsEnvironment("/main/webapp/WEB-INF");
env.init("/main/webapp");
}
#AfterClass
public static void end() {
env.destroy();
}
#After
public void after() {
env.cleanup();
}
#Test
public void test() {
TestComposer tc = new TestComposer();
tc.listboxTest();
}
}
This piece of code will produce a null pointer exception. It shows that lbOne is null. Is there a way to use listbox without calling/using a ZUL file?
Stack trace:
java.lang.NullPointerException at
org.zkoss.zk.ui.event.Events.postEvent(Events.java:383) at
org.zkoss.zk.ui.event.Events.postEvent(Events.java:432) at
org.zkoss.zk.ui.event.Events.postEvent(Events.java:366) at
org.zkoss.zul.Listbox.postOnInitRender(Listbox.java:2501) at
org.zkoss.zul.Listbox.setModel(Listbox.java:2266) at
test.TestComposer.listboxTest(TestComposer.java:12) at
test.testSuit.test(testSuit.java:75) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at
org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at
org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) at
org.junit.runners.ParentRunner.run(ParentRunner.java:309) at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Line/trace of the NPE error
test.TestComposer.listboxTest(TestComposer.java:12) at test.testSuit.test(testSuit.java:75) at
lbOne.setModel(model);
PS: I am using ZK web framework. I am using a testing tool that can't capture the traces in zats simulated environment. Thus, I want to directly call these methods without depending on ZUL files.
what about using this strategy:
public void listboxTest(){
ListModelList model = new ListModelList();
Listbox lbOne = new Listbox();
lbOne.setModel(model);
lbOne.setMultiple(true);
System.out.println(lbOne);
System.out.println(model);
}
your TestComposer should extend SelectorComposer if you develop in MVC pattern. Please read MVC tutorial
you should test a composer with a zul instead of creating an instance by yourself.
For example, you should apply the composer to a component and run ZATS client to visit the zul. Please read First Mimic Test Case
I am running a simple JUnit test. The test is:
private HangmanModel model;
private WordsToGuess word;
public void setUp()
{
model = new HangmanModel();
word = new WordsToGuess();
}
#Test
public void addWordAndChoose()
{
WordsToGuess testWord = new WordsToGuess("ahoy");
model.addWord(testWord); <---- NullPointerException
String foundWord = model.randomWord();
assertEquals("Not found the word", testWord, foundWord);
}
In WordsToGuess, the constructor is:
public WordsToGuess(String w)
{
word = w;
}
In HangmanModel, the addWord method is:
private ArrayList<WordsToGuess> words;
words = new ArrayList<WordsToGuess>();
public void addWord(WordsToGuess w)
{
words.add(w);
}
This is a REALLY weird NullPointerException since everything should run perfectly fine. It is copied almost word for word from a similar project. Here is the Stack trace:
java.lang.NullPointerException
at testing.HangmanModelTest.addWordAndChoose(HangmanModelTest.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
The #Before annotation is required before the setup method for JUnit 4
#Before
public void setUp() {
...
}