TestNG：在Eclipse中返回数据提供商中的迭代器时，ClassCastExcture

Question

在TestNG测试中，我使用一个返回迭代器对象的数据提供程序，但是当我运行测试时，我得到了一个错误。有人能解释一下为什么这是错误的，我应该怎么做来修复它？

Eclipse版本：

Eclipse Java EE IDE for Web Developers.

Version: Oxygen.3a Release (4.7.3a)
Build id: 20180405-1200

Java版本

java version "10.0.1" 2018-04-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)

数据提供商

  @DataProvider(name = "SmokeTestData", parallel = true)
public Iterator<SmokeTestData> smokeTestData(ITestContext context) {
    String fileName = context.getCurrentXmlTest().getParameter("filename");
    int numberOfTests = SmokeTestData.getNumberOfTests(fileName, true);
    SmokeTestData[] testSuiteData = new SmokeTestData[numberOfTests];
    for (int i = 1; i <= numberOfTests; i++) {
        testSuiteData[i-1] = new SmokeTestData(fileName, i);
    }
    return (Stream.of(testSuiteData)).iterator();
}

测验

 @Test(description = "Smoke Test", dataProvider = "SmokeTestData", groups =
        {"SmokeTest"})
@Description("Smoke Test")
@Severity(SeverityLevel.NORMAL)
public void smokeTest(SmokeTestData smokeTestData) {
    selectEnv(smokeTestData.getUrl());
    loginPage.get().smoketest(smokeTestData.getEnvironment(), smokeTestData.getEmail(), smokeTestData.getPassword());
    serviceAvailabilityPage.get().smoketest();
    referralRequestStatusPage.get().smoketest();
}

数据

Environment,Url,Email,Password
DE,https://somedomain.com/index.php/login,[e-mail],somePW!1
IN,https://somedomain.com/index.php/login,[e-mail],somePW!1
NM,https://somedomain.com/index.php/login,[e-mail],somePW!1
MI,https://somedomain.com/index.php/login,[e-mail],somePW!1
NV,https://somedomain.com/index.php/login,[e-mail],somePW!1
AK,https://somedomain.com/index.php/login,[e-mail],somePW!1

错误：

java.lang.ClassCastException: data.SmokeTestData cannot be cast to java.base/[Ljava.lang.Object;
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1102)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:844)

感谢您提前提供的任何帮助！！

Answer 1

我通过完全卸载Eclipse（包括以下文件夹）并清空垃圾箱解决了这个问题。

• ~/。月食
• ~/Library/Caches/org。日食站台ide
• ~/Library/Saved Application State/org。日食站台石斑鱼类。保存状态
• ~/Library/Preferences/org。日食站台石斑鱼类。普利斯特

然后安装了Eclipse IDE for Java Developers版本2018-09和TestNG插件。