在这里检测到错位的参数匹配器。您不能在Mockito中使用验证或存根之外的参数匹配器 [英] Misplaced argument matcher detected here. You cannot use argument matchers outside of verification or stubbing in Mockito
问题描述
在 BundleProcessorTest.java 中的以下两个测试用例中,我遇到异常,但是,我的第一个测试用例成功通过。
Out of the following two test cases in BundleProcessorTest.java, i am getting below exception, although, my first test case passes successfully.
org.mockito.exceptions.misusing.InvalidUseOfMatchersException:
这里检测到错位的参数匹配器:
org.mockito.exceptions.misusing.InvalidUseOfMatchersException: Misplaced argument matcher detected here:
- >在bundle.test .BundleProcessorTest.bundlePluginShouldNotBeNull(BundleProcessorTest.java:22)
-> at bundle.test.BundleProcessorTest.bundlePluginShouldNotBeNull(BundleProcessorTest.java:22)
您不能在验证或存根之外使用参数匹配器。
参数匹配器的正确用法示例:
when(mock.get(anyInt()))。thenReturn(null);
doThrow(new RuntimeException())。when(mock).someVoidMethod(anyObject());
验证(模拟).someMethod(包含(foo))
You cannot use argument matchers outside of verification or stubbing. Examples of correct usage of argument matchers: when(mock.get(anyInt())).thenReturn(null); doThrow(new RuntimeException()).when(mock).someVoidMethod(anyObject()); verify(mock).someMethod(contains("foo"))
此外,此错误可能会显示,因为您使用带有
的参数匹配器无法模拟的方法。以下方法不能是
存根/验证:final / private / equals()/ hashCode()。
Also, this error might show up because you use argument matchers with methods that cannot be mocked. Following methods cannot be stubbed/verified: final/private/equals()/hashCode().
at
bundle.test.BundleProcessorTest.bundlePluginCollectionShouldNotBeNull(BundleProcessorTest.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at bundle.test.BundleProcessorTest.bundlePluginCollectionShouldNotBeNull(BundleProcessorTest.java:28) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
请在下面找到简化的代码清单: -
Please find below simplified code listing :-
BundlePlugin.java
package bundle;
import java.util.List;
public class BundlePlugin {
private final String pluginName ;
private final List<String> featureContent ;
public BundlePlugin(String pluginName, List<String> featureContent) {
super();
this.pluginName = pluginName;
this.featureContent = featureContent;
}
public String getPluginName() {
return pluginName;
}
public List<String> getFeatureContent() {
return featureContent;
}
}
BundleProcessor.java
package bundle;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class BundleProcessor {
public BundlePlugin getBundlePlugin(String pluginName, Iterator<String> artifactIterator) {
List<String> featureContent = new ArrayList<String>() ;
return new BundlePlugin(pluginName, featureContent);
}
}
BundleProcessorTest.java
package bundle.test;
import static org.junit.Assert.assertNotNull;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.mock;
import java.util.Iterator;
import java.util.List;
import org.junit.Test;
import bundle.BundleProcessor;
public class BundleProcessorTest {
BundleProcessor bundleProcessor = new BundleProcessor() ;
@Test
public void bundlePluginShouldNotBeNull() {
Iterator<String> artifactIterator = mock(Iterator.class) ;
bundle.BundlePlugin bundlePlugin = bundleProcessor.getBundlePlugin(anyString(), artifactIterator) ;
assertNotNull( bundlePlugin );
}
@Test
public void bundlePluginContentShouldNotBeNull() {
Iterator<String> artifactIterator = mock(Iterator.class) ;
bundle.BundlePlugin bundlePlugin = bundleProcessor.getBundlePlugin(anyString(), artifactIterator) ;
List<String> featureContent = bundlePlugin.getFeatureContent() ;
assertNotNull( featureContent );
}
}
如何毫无问题地执行此测试。
How to execute this test without problem.
编辑1:
但如果我使用@Ignore注释标记 bundlePluginCollectionShouldNotBeNull 测试,然后首先测试用例传递,没有任何异常。
But if i mark the bundlePluginCollectionShouldNotBeNull test with @Ignore annotation, then first test case passes without any exception.
推荐答案
您在调用测试方法时使用mockito anyString()
,它应仅用于验证模拟对象,以确保使用任何字符串参数调用某个方法测试,但不要调用测试本身。对于您的测试,请使用空字符串代替
anyString()
。
You are using mockito anyString()
while calling the test method, it should be used only for verifying a mock object to ensure a certain method is called with any string parameter inside the test, but not to invoke the test itself. For your test use empty string ""
instead to anyString()
.
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