2
我很難理解如何模擬/存根接口與Mockito。Mockito不能模擬一個接口？
這個簡單的場景......
public interface Adder
{
int add(int a, int b);
}
public class Calculator
{
Adder _adder;
public Calculator(Adder adder)
{
_adder = adder;
}
public int add(int a, int b)
{
return _adder.add(a, b);
}
}
public class MockitoTester
{
@Test
public void can_mock()
{
Adder adder = mock(Adder.class);
Calculator sut = new Calculator(adder);
assertThat(sut).isNotNull();
}
}
是給我這個錯誤...
java.lang.NoClassDefFoundError: net/bytebuddy/dynamic/scaffold/subclass/ConstructorStrategy
at org.mockito.internal.creation.bytebuddy.CachingMockBytecodeGenerator.<init>(CachingMockBytecodeGenerator.java:20)
at org.mockito.internal.creation.bytebuddy.ByteBuddyMockMaker.<init>(ByteBuddyMockMaker.java:22)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at java.lang.Class.newInstance(Class.java:442)
at org.mockito.internal.configuration.plugins.PluginLoader.loadPlugin(PluginLoader.java:33)
at org.mockito.internal.configuration.plugins.PluginRegistry.<init>(PluginRegistry.java:12)
at org.mockito.internal.configuration.plugins.Plugins.<clinit>(Plugins.java:11)
at org.mockito.internal.util.MockUtil.<clinit>(MockUtil.java:23)
at org.mockito.internal.MockitoCore.<init>(MockitoCore.java:44)
at org.mockito.Mockito.<clinit>(Mockito.java:1101)
at com.jnericks.testutils.MockitoTester.can_mock(MockitoTester.java:13)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
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$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.lang.ClassNotFoundException: net.bytebuddy.dynamic.scaffold.subclass.ConstructorStrategy
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 40 more
您從運行時類路徑中缺少一個庫（無論bytebuddy是什麼）。 –
http://stackoverflow.com/questions/1457863/what-is-the-difference-between-noclassdeffounderror-and-classnotfoundexception?lq=1 –
好的，謝謝。我認爲任何庫/依賴項都會被maven自動引入。我猜不會。我來自C＃/ .net/nuget世界，並試圖在java/maven工作，它被證明是不是一個無縫過渡大聲笑 –