类的 junit参数异常对象

Question

我有一个 junit 测试。我在春季 4.1 中使用 JUnitParamsRunner，但我无法解决问题。

我想用对象运行测试，并制作更多类似这个测试。但是在每次运行中我都会收到相同的错误。当我在谷歌中寻找其他结果时，我看到的方式和我一样，对他们来说，测试工作正常。

java.lang.IllegalStateException: While trying to create object of class class java.lang.String could not find constructor with arguments matching (type-wise) the ones given in parameters.
    at junitparams.internal.InvokeParameterisedMethod.createObjectOfExpectedTypeBasedOnParams(InvokeParameterisedMethod.java:84)
    at junitparams.internal.InvokeParameterisedMethod.castParamsFromObjects(InvokeParameterisedMethod.java:66)
    at junitparams.internal.InvokeParameterisedMethod.<init>(InvokeParameterisedMethod.java:37)
    at junitparams.internal.ParameterisedTestClassRunner.buildMethodInvoker(ParameterisedTestClassRunner.java:125)
    at junitparams.internal.ParameterisedTestClassRunner.parameterisedMethodInvoker(ParameterisedTestClassRunner.java:118)
    at junitparams.JUnitParamsRunner.methodInvoker(JUnitParamsRunner.java:482)
    at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:273)
    at junitparams.JUnitParamsRunner.runChild(JUnitParamsRunner.java:446)
    at junitparams.JUnitParamsRunner.runChild(JUnitParamsRunner.java:393)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
Caused by: java.lang.NoSuchMethodException: java.lang.String.<init>(java.lang.String, java.lang.String, java.lang.String)
    at java.base/java.lang.Class.getConstructor0(Class.java:3350)
    at java.base/java.lang.Class.getConstructor(Class.java:2152)
    at junitparams.internal.InvokeParameterisedMethod.createObjectOfExpectedTypeBasedOnParams(InvokeParameterisedMethod.java:81)
    ... 20 more

测试代码：

import junitparams.JUnitParamsRunner;
import junitparams.Parameters;
import junitparams.naming.TestCaseName;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.HttpStatus;
import static org.assertj.core.api.Assertions.assertThat;

@RunWith(JUnitParamsRunner.class)
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class CheckAccountTests extends UserActionBaseTests {
   private final static String accountQueryParamName = "account";
   private final static String regionNameQueryParamName = "regionName";
   private final static String regionName = "regionTest";
   private final static String nonExistentEmailAccount = "[e-mail]";
   private final static String nonExistentRegionName = "nonExistentRegionName";
   @SuppressWarnings("FieldCanBeLocal")
   private final String emailAccount = "[e-mail]";

   @Test
   public void dummyTest() throws Exception {
       for(int i = 0; i< 1000 ; i++) {
           i++;    
       }
   }

   @Override
   public final String get_relativeUrl() { return super.get_relativeUrl() + "/checkAccount.action"; }

   @SuppressWarnings("unused")
   private Object[] checkAccount_DifferentAccounts_ShouldSucceed_ParametersToTest() {
       return new Object[]{
               new Object[]{"Existent email account", emailAccount, regionName}};
   }
   @Test
   @Parameters(method = "checkAccount_DifferentAccounts_ShouldSucceed_ParametersToTest")
   @TestCaseName("{0}.  Account: {1}, Region: {2}")
   public void checkAccount_DifferentAccounts_ShouldSucceed(String account, String regionName) throws Exception {
       var result = (ExceptionResult) sendRequest(getQueryParams(account, regionName), HttpStatus.OK, SysConstant.SUCCESS);
       assertThat(result.getMsg()).isEqualTo("true");
   }
   private List<NameValuePair> getQueryParams(String account, String regionName) {
       return new ArrayList<>() {
           {
               add(new BasicNameValuePair(accountQueryParamName, account));
               add(new BasicNameValuePair(regionNameQueryParamName, regionName));
           }
       };
   }
   @SuppressWarnings("unused")
   private List<NameValuePair> getQueryParams(String account) {
       return getQueryParams(account, regionName);
   }
}

Answer 1

checkAccount_DifferentAccounts_ShouldSucceed_ParametersToTest()方法为每个测试执行生成三个参数：

"Existent email account", emailAccount, regionName

测试方法仅接受两个参数：

checkAccount_DifferentAccounts_ShouldSucceed(String account, String regionName)

您需要确保提供程序方法生成的参数数与测试方法接受的参数数匹配。