无法在模拟中模拟课堂

Question

我正在尝试为声纳插件编写单元测试。但是，在模拟其 Project 类时，测试失败，因为 Mockito 尝试使用错误的类名。我的测试代码是：

import org.sonar.api.resources.Project;
Project project = mock(Project.class);

在

通过 maven 或直接在 eclipse 中运行单元测试时，会出现以下堆栈跟踪：

java.lang.NoClassDefFoundError: org/apache/maven/project/MavenProject
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
at java.lang.Class.getDeclaredMethods(Class.java:1791)
at org.mockito.cglib.core.ReflectUtils.addAllMethods(ReflectUtils.java:349)
at org.mockito.cglib.proxy.Enhancer.getMethods(Enhancer.java:422)
at org.mockito.cglib.proxy.Enhancer.generateClass(Enhancer.java:457)
at org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217)
at org.mockito.cglib.proxy.Enhancer.createHelper(Enhancer.java:378)
at org.mockito.cglib.proxy.Enhancer.createClass(Enhancer.java:318)
at org.mockito.internal.creation.jmock.ClassImposterizer.createProxyClass(ClassImposterizer.java:93)
at org.mockito.internal.creation.jmock.ClassImposterizer.imposterise(ClassImposterizer.java:50)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:54)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:45)
at org.mockito.Mockito.mock(Mockito.java:921)
at org.mockito.Mockito.mock(Mockito.java:816)
at com.databorough.sonar.xametric.MetricAnalysisSensorTest.shouldExecuteOnProjectWithAllParams(MetricAnalysisSensorTest.java:37)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:113)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: java.lang.ClassNotFoundException: org.apache.maven.project.MavenProject
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
    ... 47 more

当插件成功构建时，项目位于类路径中。如何设置测试运行程序/maven 以将项目视为 org.sonar.api.resources.Project 类？

Answer 1

您的"Project"类被正确视为"org.sonar.api.resources.Project"。

问题来自Sonar内部使用"org.apache.maven.project.MavenProject"的事实，因此此类必须位于测试类路径上。将以下依赖项添加到 POM 将解决此问题：

<dependency>
  <groupId>org.apache.maven</groupId>
  <artifactId>maven-project</artifactId>
  <version>2.0.6</version>
  <scope>test</scope>
</dependency>

Answer 2

java.lang.NoClassDefFoundError: org/apache/maven/project/MavenProject

这表明类org.sonar.api.resources.Project可能取决于 Maven 类，org.apache.maven.project.MavenProject

我不确定 Sonar 是否将其添加为依赖项？您可能需要为 Maven 插件 API 添加依赖项。