How can I create and use Interfaces inside a contract?
For example when I have the following contract:
package com.jelurida.ardor.contracts;
import nxt.addons.AbstractContract;
import nxt.addons.JO;
import nxt.addons.RequestContext;
public class TestContract extends AbstractContract {
public interface Test {
String addPrefix(String text);
}
public class TestImpl implements Test {
@Override
public String addPrefix(String text) {
return "prefix_" + text;
}
}
@Override
public JO processRequest(RequestContext context) {
Test test = new TestImpl();
JO resp = new JO();
resp.put("text", test.addPrefix("some text"));
return context.generateResponse(resp);
}
}
I get the following error while running unit tests:
2018-12-20 17:40:09 INFO: main Loading resource from com/jelurida/ardor/contracts/TestContract.class
2018-12-20 17:40:09 INFO: main Loading resource from classpath com/jelurida/ardor/contracts/TestContract.class
2018-12-20 17:40:09 INFO: main Loading inner class com.jelurida.ardor.contracts.TestContract.TestImpl resource from com/jelurida/ardor/contracts/TestContract$TestImpl.class
2018-12-20 17:40:09 INFO: main Loading resource from classpath com/jelurida/ardor/contracts/TestContract$TestImpl.class
2018-12-20 17:40:09 INFO: main Loading inner class com.jelurida.ardor.contracts.TestContract.Test resource from com/jelurida/ardor/contracts/TestContract$Test.class
2018-12-20 17:40:09 INFO: main Loading resource from classpath com/jelurida/ardor/contracts/TestContract$Test.class
2018-12-20 17:40:09 INFO: main Shutting down...
java.lang.LinkageError: loader (instance of nxt/addons/ContractLoader$CloudDataClassLoader): attempted duplicate class definition for name: "com/jelurida/ardor/contracts/TestContract$Test"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at nxt.addons.ContractLoader$CloudDataClassLoader.findClass(ContractLoader.java:308)
at nxt.addons.ContractLoader.loadContractFromJar(ContractLoader.java:252)
at nxt.addons.ContractLoader.loadContractFromJar(ContractLoader.java:210)
at nxt.tools.ContractManager.loadContract(ContractManager.java:437)
at nxt.tools.ContractManager.uploadImpl(ContractManager.java:327)
at com.jelurida.ardor.contracts.ContractTestHelper.lambda$deployContract$0(ContractTestHelper.java:110)
at java.security.AccessController.doPrivileged(Native Method)
at com.jelurida.ardor.contracts.ContractTestHelper.deployContract(ContractTestHelper.java:107)
at com.jelurida.ardor.contracts.ContractTestHelper.deployContract(ContractTestHelper.java:98)
at com.jelurida.ardor.contracts.ContractTestHelper.deployContract(ContractTestHelper.java:93)
at com.jelurida.ardor.contracts.ContractTestHelper.deployContract(ContractTestHelper.java:89)
at com.jelurida.ardor.contracts.TestContractTest.uploadTest(TestContractTest.java:9)
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.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.junit.runners.Suite.runChild(Suite.java:127)
at org.junit.runners.Suite.runChild(Suite.java:26)
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$2.evaluate(ParentRunner.java:229)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
How can I solve this error? I'm using version 2.2.1
