我的任务是为以下信令服务器编写单元测试用例。任何人都可以帮助我解决至少一个成功运行的测试用例吗？我可以从那里捡起来。目前，我对这项任务一无所知，我似乎对如何处理这个问题甚至连最微弱的想法都没有。请有人给我一些光。
这是课程：
@Component
public class SocketHandler extends TextWebSocketHandler {
List<WebSocketSession> sessions = new CopyOnWriteArrayList<>();
@Override
public void handleTextMessage(WebSocketSession session, TextMessage message) throws InterruptedException, IOException {
for (WebSocketSession webSocketSession : sessions) {
if (webSocketSession.isOpen() && !session.getId().equals(webSocketSession.getId())) {
webSocketSession.sendMessage(message);
}
}
}
}
这就是我编写单元测试用例的方式：
public class SocketHandlerTest {
@Mock
WebSocketSession webSocketSession;
TextMessage textMsg = new TextMessage("Test Message".getBytes());
@Test
//first conditionn satisfies and second fails
public void AgainstOwnSessionTest() throws Exception {
List<WebSocketSession> sessions = new CopyOnWriteArrayList<>();
sessions.add(webSocketSession);
PowerMockito.whenNew(WebSocketSession.class).withNoArguments().thenReturn(webSocketSession);
for(WebSocketSession wbSessions : sessions) {
Mockito.when(webSocketSession.isOpen()).thenReturn(true);
Mockito.when(webSocketSession.getId().equals(wbSessions.getId())).thenReturn(false);
}
new SocketHandler().handleTextMessage(webSocketSession,textMsg);
}
@Test
public void TextMessageTest() throws Exception {
when(webSocketSession.isOpen()).thenReturn(true);
SocketHandler textHandler = new SocketHandler();
textHandler. handleTextMessage(webSocketSession, textMsg);
verify(webSocketSession, times(1)).sendMessage(textMsg);
}
}
当我运行它时，我得到这些错误：
org.powermock.reflect.exceptions.ConstructorNotFoundException: No constructor found in class 'org.springframework.web.socket.WebSocketSession' with parameter types: [ <none> ].
at org.powermock.reflect.internal.WhiteboxImpl.throwExceptionIfConstructorWasNotFound(WhiteboxImpl.java:1197)
at org.powermock.reflect.internal.WhiteboxImpl.findUniqueConstructorOrThrowException(WhiteboxImpl.java:1121)
at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.createNewSubstituteMock(DefaultConstructorExpectationSetup.java:94)
at org.powermock.api.mockito.internal.expectation.DefaultConstructorExpectationSetup.withNoArguments(DefaultConstructorExpectationSetup.java:78)
at com.cerner.devacademy.SocketHandlerTest.AgainstOwnSessionTest(SocketHandlerTest.java:30)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:40)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:80)
at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:71)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:137)
at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:98)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:542)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
请以某种方式帮助我，现在仅帮助我编写一个测试用例就足够了，因为我将尝试基于此编写剩余的用例。在上面提到的所有事情上，我在概念上都非常薄弱，所以请尽量体谅。提前非常感谢。