为什么得到这个堆栈跟踪？

java.lang.IllegalStateException：没有注册的仪器！必须在注册仪器下运行。

我使用eclipse IDE和ADT插件。

import android.support.test.uiautomator.*; 
import android.support.test.InstrumentationRegistry; 
import android.support.test.internal.runner.junit3.*; 
import android.support.test.internal.runner.listener.InstrumentationResultPrinter; 
import android.support.test.rule.*; 

import org.junit.Before; 
import org.junit.Test; 
import org.junit.runner.RunWith; 
import org.junit.runners.JUnit4; 

import android.os.RemoteException; 
import android.support.*; 

@RunWith(JUnit4.class) 
public class uia { 
    private UiDevice d; 

    @Before 
    public void setup() throws RemoteException { 
     d = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation()); 
     d.isScreenOn(); 
    } 

    @Test 
    public void home(){ 
     d.pressHome(); 
    } 
}

运行此代码后，我得到了以下跟踪：

java.lang.IllegalStateException: No instrumentation registered! Must run under a registering instrumentation. 
    at android.support.test.InstrumentationRegistry.getInstrumentation(InstrumentationRegistry.java:45) 
    at ui.uia.setup(uia.java:24) 
    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:50) 
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) 
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) 
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 
    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:678) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

有什么建议？

来源

2017-04-10 Elanthingal Chandrasekaran

为了帮助，人们需要看到你的代码。 – BPS

仪器测试需要@RunWith(AndroidJUnit4.class)而不是@RunWith(JUnit4.class)

请检查documentation了解更多详情，

来源

2017-08-16 07:24:59 JTeam

对于jvm单元测试呢？ –

为什么得到这个堆栈跟踪？

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