我正在尝试模拟KeyStore类。在模拟之后，如果调用了load方法，我不希望发生任何事情。因此，我写了以下几行来实现这一目标。
@PrepareForTest(KeyStoreFactory.class)
@Test
public void should_verify_signature_when_verifySignature_called_with_fileName_and_certificate_details_in_verifySignature_method() throws Exception {
PowerMockito.mockStatic(KeyStoreFactory.class);
KeyStore keyStoreMock = PowerMockito.mock(KeyStore.class);
PowerMockito.when(KeyStoreFactory.getInstance(anyString(), anyString())).thenReturn(keyStoreMock);
Mockito.doNothing().when(keyStoreMock).load(Mockito.any(InputStream.class), Mockito.any(char[].class));
Certificate certificateMock = Mockito.mock(Certificate.class);
when(keyStoreMock.getCertificate(anyString())).thenReturn(certificateMock);
boolean result = signatureUtil.verifySignature("src//test//java//Updates.zip.signed.pkcs7"
, "src//test//java//Updates-retrieved.zip", "Windows-MY,SunMSCAPI,someName");
Assert.assertTrue(result);
}
但是load方法抛出空指针异常。然后，当我调试时，我发现真正的方法被调用，虽然我已经指定mockito不要。我在这做错了什么？请指教。
以下是我编写测试的方法。
@Override
public boolean verifySignature(String filePath, String extractContentsPath, String csvParams)
throws ServiceSDKException {
boolean result = false;
String typeOfCertificateStore = "";
String certificateStoreProvider = "";
String certificateName = "";
SignerInformationVerifier verifier = null;
if (filePath != null && extractContentsPath != null && csvParams != null && !filePath.isEmpty()
&& !extractContentsPath.isEmpty() && !csvParams.isEmpty()) {
try {
String[] receivedParams = csvParams.split(",");
typeOfCertificateStore = receivedParams[0];
certificateStoreProvider = receivedParams[1];
certificateName = receivedParams[2];
} catch (ArrayIndexOutOfBoundsException e) {
throw new ServiceSDKException("csvParams should have type of certificate store, certificate store provider and certificate name respectively", e);
}
try {
Path signedDataFilePath = Paths.get(filePath);
Path pathToExtractContents = Paths.get(extractContentsPath);
KeyStore msCertStore = KeyStoreFactory.getInstance(typeOfCertificateStore, certificateStoreProvider);
msCertStore.load(null, null);
try {
verifier = new JcaSimpleSignerInfoVerifierBuilder()
.setProvider(certificateStoreProvider)
.build(((X509Certificate) msCertStore.getCertificate(certificateName)));
} catch (Exception e) {
throw new ServiceSDKException("Exception occurred when building certificate",e);
}
verify(signedDataFilePath, pathToExtractContents, verifier);
result = true;
} catch (IOException | NoSuchAlgorithmException
| CertificateException e) {
result = false;
throw new ServiceSDKException("Exception occurred while preparing to verify signature " , e);
}
} else {
throw new ServiceSDKException("FilePath,extract contents path or csv params cannot be empty or null");
}
return result;
}
这是整个测试类：
@RunWith(PowerMockRunner.class)
public class SignatureUtilImplTest {
SignatureUtilImpl signatureUtil = new SignatureUtilImpl();
@PrepareForTest({KeyStoreFactory.class, SignatureUtilImpl.class})
@Test
public void should_verify_signature_when_verifySignature_called_with_fileName_and_certificate_details_in_verifySignature_method() throws Exception {
CMSSignedDataParser spMock = PowerMockito.mock(CMSSignedDataParser.class);
SignerInformationVerifier verifierMock = Mockito.mock(SignerInformationVerifier.class);
SignatureUtilImpl signatureUtilSpy = Mockito.spy(new SignatureUtilImpl());
KeyStore keyStoreMock = PowerMockito.mock(KeyStore.class);
PowerMockito.mockStatic(KeyStoreFactory.class);
PowerMockito.when(KeyStoreFactory.getInstance(anyString(), anyString())).thenReturn(keyStoreMock);
SignerInformation signerInformationMock = Mockito.mock(SignerInformation.class);
Collection<SignerInformation> collection = new ArrayList();
collection.add(signerInformationMock);
Mockito.doCallRealMethod().when(signatureUtilSpy).verifySignature("src/test/java/Updates.zip.signed.pkcs7"
, "src/test/java/Updates-retrieved.zip", "Windows-MY,SunMSCAPI,someName");
Mockito.doNothing().when(signatureUtilSpy).loadKeyStore();
Mockito.doReturn(verifierMock).when(signatureUtilSpy).getSignerInformationVerifier(anyString(), anyString());
Mockito.doReturn(spMock).when(signatureUtilSpy).getDataParser(any(DigestCalculatorProvider.class), any(FileInputStream.class));
Mockito.doReturn(collection).when(spMock).getSignerInfos().getSigners();
Mockito.doReturn(true).when(signerInformationMock).verify(verifierMock);
//PowerMockito.doNothing().when(signatureUtilSpy, "verify", any(Path.class),any(Path.class),any(SignerInformationVerifier.class));
// PowerMockito.doReturn(true).when(signatureUtilSpy, PowerMockito.method(SignatureUtilImpl.class, "verify",Path.class,Path.class, SignerInformationVerifier.class))
// .withArguments(any(Path.class),any(Path.class),any(SignerInformationVerifier.class));
boolean result = signatureUtilSpy.verifySignature("src/test/java/Updates.zip.signed.pkcs7"
, "src/test/java/Updates-retrieved.zip", "Windows-MY,SunMSCAPI,someName");
Assert.assertTrue(result);
}
}
答案 0 :(得分：2)
我认为这有助于：
在SignatureUtil中创建另一个方法：
public KeyStore loadKeyStore(...){
KeyStore msCertStore = KeyStoreFactory.getInstance(typeOfCertificateStore,certificateStoreProvider);
msCertStore.load(null, null);
}
在您的测试课程中，请执行以下操作。
Mockito.doNothing().when(signatureUtilMock).loadKeyStore(anyString(), anyString());
以下是适合我的代码
package com.foo;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
public class KeyStoreService {
public KeyStoreService(){
}
public void load() throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException{
System.out.println("start");
KeyStore ks = KeyStore.getInstance("");
ks.load(null, null);
System.out.println("end");
}
}
测试类
package com.foo.test;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.cert.CertificateException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Matchers;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import com.foo.KeyStoreService;
@PrepareForTest(KeyStoreService.class)
@RunWith(PowerMockRunner.class)
public class TestKeyStore {
@Test
public void test1() throws KeyStoreException, NoSuchProviderException, NoSuchAlgorithmException, CertificateException, IOException{
PowerMockito.mockStatic(KeyStore.class);
KeyStore keyStoreMock = PowerMockito.mock(KeyStore.class);
KeyStoreService kss = new KeyStoreService();
PowerMockito.when(KeyStore.getInstance(Matchers.anyString(), Matchers.anyString())).thenReturn(keyStoreMock);
Mockito.doNothing().when(keyStoreMock).load(Mockito.any(InputStream.class), Mockito.any(char[].class));
kss.load();
}
}
答案 1 :(得分：2)
KeyStore是一个系统类，因此为了模拟它，应将ClassThatCallsTheSystemClass添加到@PrepareForTest。据我所知，SignatureUtilImpl应该在@PrepareForTest中。但可能是另一个类也称为此系统类。
顺便说一下，由于PowerMock如何模拟系统类，你可能会遇到这行中的强制转换
new JcaSimpleSignerInfoVerifierBuilder()
.setProvider(certificateStoreProvider)
.build(((X509Certificate) msCertStore.getCertificate(certificateName)));
答案 2 :(得分：0)
以下代码适用于我
PowerMockito.mockStatic(KeyStore.class);
KeyStore mockKeyStore = PowerMockito.mock(KeyStore.class);
PowerMockito.doNothing().when(mockKeyStore).load(Matchers.any(), Matchers.anyObject());
Mockito.when(KeyStore.getInstance(Matchers.anyString())).thenReturn(mockKeyStore);
答案 3 :(得分：0)
doNothing（）方法将调用实际方法，如果您不想调用，则可以使用suppress-method。它将抑制不返回方法的调用。
doNothing().when(switchMock).finalVoidMethod(channelId);
更改
suppress(method(SignatureUtilImpl.class, "loadKeyStore"));