java - Mockito spy 引用了错误的对象

Question

我对 Mockito 模拟库有疑问

我的 Junit4 测试类有 2 个测试套件。

测试一:

@Test
public void test1()
{
   Class class = new Class();
   Class classSpy = Mockito.spy(class);
   Mockito.when( classSpy.getExpectedValue()).thenReturn("expected_one");
}

第二次测试:

@Test
public void test2()
{
    Class class = new Class();
    Class classSpy = Mockito.spy(class);
    Mockito.when( classSpy.getExpectedValue()).thenReturn("expected_two");
}

我有可测试的类(class):

public class TestableClass
{
    x = class.getExpectedValue();
    //some code
}

问题是:

1 - 我使用 test1() 和 test2() 运行测试类 首先运行 test1() 调试器指示 x = "expected_one" 一切都很好 - 这是预期的行为

2 - test2 正在运行 我在我的可测试类中将断点放在与 x 一致的位置。 和x =“expected_one”

我似乎 Mockito 在两个测试中都使用了对 spy 对象 (classSpy) 的相同引用。!!

提前感谢您的帮助

ps:我使用mockito 1.9.0和jre 6.0.370.6

ps:我有正常的SetUp方法:

@Before
public void setUp(){

    testableClass = new TestableClass();
}

ps3:完整测试套件:

package xxx;

import java.io.File;
import java.io.IOException;

import junit.framework.Assert;

import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.mockito.Mockito;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import xxx.testdata.JUnitConstants;
import xxx.testdata.JUnitUtils;
import xxx.testdata.MockNode;


@SuppressWarnings( "deprecation" )
public class MONodeModifierTest
{

    private MONodeModifier moNodeModifier;
    private Document doc;
    static File file;



    @Before
    public void setUp(){

        doc = JUnitUtils.CreateXMLDocumentFromFile(file);
        moNodeModifier = new MONodeModifier(doc);
    }


    @Test
    public void createNodeTest(){

        Node inputMoNode = new MockNode();

        boolean nodeisCreated = moNodeModifier.createMONode( inputMoNode, doc );
        Assert.assertTrue(nodeisCreated);
    }

    @Test
    public void removeNodeTest(){

        final Node inputMoNode = new MockNode();
        NodeList nodeList = new NodeList(){

            @Override
            public Node item( int index )
            {
                return inputMoNode;
            }

            @Override
            public int getLength()
            {
                return 1;
            }};

        boolean nodeisRemoved = moNodeModifier.removeMONode( inputMoNode,nodeList );
        Assert.assertTrue(nodeisRemoved);
    }

    @Test
    public void updateMONodeWithPname(){

        Node node = new MockNode();
        NodeList nodeListMock = Mockito.mock( NodeList.class );
        Node nodeSpy = Mockito.spy(node);
        Mockito.when( nodeSpy.getChildNodes()).thenReturn( nodeListMock);
        Mockito.when( nodeSpy.getNodeName()).thenReturn( "p");

        Mockito.when( nodeListMock.getLength()).thenReturn( 1);
        Mockito.when( nodeListMock.item(Mockito.anyInt())).thenReturn( nodeSpy);

        boolean nodeisUpdated = moNodeModifier.updateMONode( nodeSpy, nodeListMock );
        Assert.assertTrue(nodeisUpdated);

        Mockito.verify( nodeSpy).setTextContent(Mockito.anyString());
    }

    @Test
    public void updateMONodeWithNonEmptyListName(){

        Node node = new MockNode();
        NodeList nodeListMock = Mockito.mock( NodeList.class );
        Node nodeSpy = Mockito.spy(node);
        Mockito.when( nodeSpy.getChildNodes()).thenReturn( nodeListMock);
        Mockito.when( nodeSpy.getNodeName()).thenReturn( "list");

        Mockito.when( nodeListMock.getLength()).thenReturn( 1).thenReturn( 1);
        Mockito.when( nodeListMock.item(Mockito.anyInt())).thenReturn( nodeSpy);


        boolean nodeisUpdated = moNodeModifier.updateMONode( nodeSpy, nodeListMock );
        Assert.assertTrue(nodeisUpdated);

        Mockito.verify( nodeSpy).replaceChild(Mockito.any(Node.class),Mockito.any(Node.class));
    }

    @Test
    public void updateNonExistMONodeType(){

        Node node = new MockNode();
        Node nodeSpy = Mockito.spy(node);

        NodeList nodeListMock = Mockito.mock( NodeList.class );

        Mockito.when( nodeSpy.getChildNodes()).thenReturn( nodeListMock);
        Mockito.when( nodeSpy.getNodeName()).thenReturn( "p");
        Mockito.when( nodeSpy.getNodeType()).thenReturn( (short) 1).thenReturn( (short) 1).thenReturn( (short) 1).thenReturn( (short) 2);

        Mockito.when( nodeListMock.getLength()).thenReturn( 1);
        Mockito.when( nodeListMock.item(Mockito.anyInt())).thenReturn( nodeSpy);


        boolean nodeisCreated = moNodeModifier.updateMONode( nodeSpy, nodeListMock );
        Assert.assertTrue(nodeisCreated);

        Mockito.verify( nodeSpy).appendChild(Mockito.any(Node.class));

    }

    @BeforeClass
    public static void prepareFileBeforeTests() throws IOException
    {
        file = JUnitUtils.copyFile(
            new File( "xx.xml" ), new File( "testfile.xml" ));
    }

    @AfterClass
    public static void deleteFileAfterTests()
    {
        JUnitUtils.deleteFile( new File(
            "testfile.xml" ) );
    }

}

和 spy 类(Class):

package xxx.testdata;

import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.TypeInfo;
import org.w3c.dom.UserDataHandler;



    public class MockNode implements Node,Element,Attr
    {


        @Override
        public NodeList getChildNodes()
        {
            return new NodeList(){

                @Override
                public int getLength()
                {
                    return 1;
                }

                @Override
                public Node item( int index )
                {
                    return new MockNode();
                }};
        }

        @Override
        public String getNodeName()
        {
            return "name";
        }

        @Override
        public short getNodeType()
        {   
            return 1;
        }


    }

和 updateMONode() 方法:

boolean updateMONode( Node inputMoNode, NodeList targetNodeList )
{
    String inputMoDn = Utils.getAttrValue( inputMoNode, "distName" );
    for( int i = 0; i < targetNodeList.getLength(); i++ )
    {
        Node targetMoNode = targetNodeList.item( i );
        String targetMoDn = Utils.getAttrValue( targetMoNode, "distName" );
        if( (targetMoNode.getNodeType() == Node.ELEMENT_NODE) &&
            (inputMoNode.getNodeType() == Node.ELEMENT_NODE) )
        { 
            if( Utils.compareDns( targetMoDn, inputMoDn ) )
            {
                NodeList parameters = inputMoNode.getChildNodes();
                boolean isParameterChanged = false;
                boolean isChanged = false;
                for( int j = 0; j < parameters.getLength(); j++ )
                {
                    if( (parameters.item( j ).getNodeType() == Node.ELEMENT_NODE) )
                        isChanged =
                            updateParamNode(
                                parameters.item( j ), targetMoNode,
                                inputMoDn );
                    if( isChanged )
                    {
                        isParameterChanged = isChanged;
                        isUpdatedParameterNode = false;
                    }
                }
                if( isParameterChanged )
                {
                    return true;
                }
            }
        }
    }
    return false;
}

Answer 1

我相信情况是您没有将新创建的 spy 注入(inject)到TestableClass中。您在每个测试中唯一创建 spy ，是否还将新创建的 spy 分配到测试类的 class 字段中？