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[英]Mockito doReturn() executes the Real function instead of just return
[英]Mockito doReturn/when executes real method (without CGILIB)
我做了很多Mockito間諜,並且只是在一個新項目中模仿了自己的工作示例。 但這不幸地失敗了
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import static org.mockito.Mockito.*;
public class SpyTest {
HttpClient httpClient;
private HttpResponse httpResponse;
private StatusLine responseStatus;
private HttpEntity responseEntity;
@BeforeMethod
public void setupClient() throws Exception {
List spy = spy(new ArrayList());
doReturn(true).when(spy).addAll(any(Collection.class)); // this works!
DefaultHttpClient directClient = new DefaultHttpClient();
httpClient = spy(directClient);
httpResponse = mock(HttpResponse.class);
responseStatus = mock(StatusLine.class);
responseEntity = mock(HttpEntity.class);
doReturn(responseStatus).when(httpResponse).getStatusLine();
doReturn(responseEntity).when(httpResponse).getEntity();
doReturn(httpResponse).when(httpClient).execute(any(HttpPost.class)); // failing here
}
@Test
public void itShouldSetupTheSpy() throws Exception {
doReturn(200).when(responseStatus).getStatusCode();
doReturn("OK").when(responseStatus).getReasonPhrase();
doAnswer(new Answer() {
@Override
public Object answer(InvocationOnMock invocation) throws Throwable {
OutputStream os = (OutputStream) invocation.getArguments()[0];
os.write("{\"id\": 100}".getBytes());
return null;
}
}).when(responseEntity).writeTo(any(OutputStream.class));
}
}
但是我有錯誤
java.lang.IllegalArgumentException: Request must not be null. at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:801) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784) at SpyTest.setupClient(SpyTest.java:37)
相信我已經聽從了官方的建議 ! 像其他間諜一樣緊密 而這個答案 ! 似乎不適用於我,因為我沒有使用CGLIB,這從maven依賴樹可以明顯看出:
[INFO] +- org.codehaus.jackson:jackson-mapper-asl:jar:1.9.3:compile [INFO] | \- org.codehaus.jackson:jackson-core-asl:jar:1.9.3:compile [INFO] +- org.testng:testng:jar:6.8:test [INFO] | +- junit:junit:jar:4.10:test [INFO] | | \- org.hamcrest:hamcrest-core:jar:1.1:test [INFO] | +- org.beanshell:bsh:jar:2.0b4:test [INFO] | +- com.beust:jcommander:jar:1.27:test [INFO] | \- org.yaml:snakeyaml:jar:1.6:test [INFO] +- org.mockito:mockito-all:jar:1.9.5:test [INFO] +- com.newrelic:newrelic-api:jar:2.3.0:compile [INFO] +- org.apache.httpcomponents:httpclient:jar:4.2.5:compile [INFO] | +- org.apache.httpcomponents:httpcore:jar:4.2.4:compile [INFO] | +- commons-logging:commons-logging:jar:1.1.1:compile [INFO] | \- commons-codec:commons-codec:jar:1.6:compile [INFO] \- org.apache.commons:commons-lang3:jar:3.1:compile
看起來HttpClient及其子類有問題。
execute
是最終方法 ,而Mockito無法模擬最終方法(如有關間諜的部分以及FAQ所述 )。
為什么? 由於在正常情況下您無法覆蓋最終方法,因此Java采用快捷方式並將調用(對最終方法)直接編譯為實現,而不是在Java的等效虛擬方法表中查找它們。 這意味着Mockito永遠不會參與最終方法調用,因此無法攔截行為,甚至無法接收存根/驗證調用。
您可以切換到模擬並使用原始的HttpClient嗎? 您可以模擬接口的任何方法,而不必擔心可見性或最終方法問題。
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