模拟时junit中的错误

我是Junit的新手,下面是我正在运行的junit代码。

package com.de.base.util.general;

import static org.junit.Assert.*;

import static org.mockito.Mockito.when;

import java.util.HashMap;

import org.junit.Assert;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.InjectMocks;

import org.mockito.Mock;

import org.mockito.runners.MockitoJUnitRunner;

import org.powermock.api.mockito.PowerMockito;

@RunWith(MockitoJUnitRunner.class)

public class JReportUtilTest {

@InjectMocks

ReportUtil w_res = new ReportUtil();

@Mock

CollectionUtil w_util;

@Test

public void test_removeHashedSettings() throws Exception {

HashMap<String ,String> w_abc = new HashMap<String,String>();

w_abc.put("abc","89");

//CollectionUtil mock = org.mockito.Mockito.mock(CollectionUtil.class);

//PowerMockito.mockStatic(CollectionUtil.class,w_abc);

when(w_util.createHashMap("abc:89", ":")).thenReturn(w_abc);

assertEquals("abc:89:",ReportUtil.removeHashedSettings("1", "abc:89", ":"));

}

}

这是我的API在ReportUtil中删除的HashedSettings

public static String removeHashedSettings(String key, String a_settings, String deilimiter) throws Exception

{

if (!(key != null && key.trim().length() > 0))

return a_settings;

if (!(a_settings != null && a_settings.trim().length() > 0))

return a_settings;

HashMap hSettings = CollectionUtil.createHashMap(a_settings, deilimiter);

hSettings.remove(key);

return getSettingFromHash(hSettings, deilimiter);

}

下面是我必须模拟的CollectionUtil中的createHashMap的代码。

public static HashMap<String, String> createHashMap(String a_NameValStr, String a_Delim)// throws Exception

{

HashMap<String, String> w_KeyVal = new HashMap<String, String>();

if (LOGGER.isInfoEnabled()) LOGGER.info("CollectionUtil:createHashMap:Hashing string: "+ a_NameValStr );

if(a_NameValStr == null) return w_KeyVal;

StringTokenizer w_StrTkn = new StringTokenizer(a_NameValStr, a_Delim);

if( w_StrTkn.countTokens() == 0 || (w_StrTkn.countTokens()%2) != 0 )

{

LOGGER.warn("CollectionUtil:createHashMap:Invalid number of tokens to hash: "+ a_NameValStr+":"+w_StrTkn.countTokens() );

return w_KeyVal;

}

while (w_StrTkn.hasMoreTokens()) w_KeyVal.put( w_StrTkn.nextToken(), w_StrTkn.nextToken());

System.out.println(w_KeyVal);

return w_KeyVal;

}

这是我在运行junit测试用例时遇到的错误。

 org.mockito.exceptions.misusing.MissingMethodInvocationException: 

when() requires an argument which has to be 'a method call on a mock'.

For example:

when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:

1. you stub either of: final/private/equals()/hashCode() methods.

Those methods *cannot* be stubbed/verified.

Mocking methods declared on non-public parent classes is not supported.

2. inside when() you don't call method on mock but on some other object.

at com.de.base.util.general.JReportUtilTest.test_removeHashedSettings(JReportUtilTest.java:32)

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:45)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)

at org.junit.runners.ParentRunner.run(ParentRunner.java:300)

at org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)

at org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)

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)

我正在使用嘲笑-all-1.10.19.jar,powermock-api-mockito-1.6.6.jar,powermock-

core-1.6.6.jar,powermock-module-junit4-1.6.6.jar谁能帮我解决这个问题?

回答:

这是我的工作代码:

import static org.junit.Assert.assertEquals;

import java.util.HashMap;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.InjectMocks;

import org.mockito.Mockito;

import org.powermock.api.mockito.PowerMockito;

import org.powermock.core.classloader.annotations.PrepareForTest;

import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)

@PrepareForTest(CollectionUtil.class)

public class TestHarnesTest {

@InjectMocks

TestHarnes w_res = new TestHarnes();

@Before

public void before() {

PowerMockito.mockStatic(CollectionUtil.class);

}

@Test

public void test_removeHashedSettings() throws Exception {

HashMap<String, String> w_abc = new HashMap<String, String>();

w_abc.put("abc", "89");

// CollectionUtil mock = org.mockito.Mockito.mock(CollectionUtil.class);

// PowerMockito.mockStatic(CollectionUtil.class,w_abc);

PowerMockito.when(CollectionUtil.createHashMap(Mockito.eq("abc:89"), Mockito.eq(":"))).thenReturn(w_abc);

assertEquals("abc:89:", TestHarnes.removeHashedSettings("1", "abc:89", ":"));

}

}

和TestHarnes类

public class TestHarnes {

public static String removeHashedSettings(final String key, final String a_settings, final String deilimiter) throws Exception {

if (!(key != null && key.trim().length() > 0)) {

return a_settings;

}

if (!(a_settings != null && a_settings.trim().length() > 0)) {

return a_settings;

}

HashMap hSettings = CollectionUtil.createHashMap(a_settings, deilimiter);

hSettings.remove(key);

return getSettingFromHash(hSettings, deilimiter);

}

private static String getSettingFromHash(final HashMap hSettings, final String deilimiter) {

return "";

}

}

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