将TestNG测试参数注入由IInvokedMethodListener调用的自定义方法中的一种方法

Question

@BeforeMethod可以具有Object []参数，该参数注入提供给测试方法的参数

public class SampleTest {

@DataProvider
public Object[] one(){ return new Object[]{ 1 };}

@BeforeMethod
public void setUp(Object[] params){
    Assert.assertEquals(params[0], 1);
}

@Test(dataProvider = "one")
public void test(Integer intParam){
    //test smth
}
}

我想将这样的参数注入我的自定义方法中，该方法由IInvokedMethodListener调用

public class MethodInGroupsListener implements IInvokedMethodListener {

@Override
public void beforeInvocation(IInvokedMethod iInvokedMethod, ITestResult iTestResult) {
     Method customMethod = /* code to find my method */
     Object[] params = /* this is where help is needed */
     customMethod.invokeMethod(iTestResult.getInstance(), params);
}

问题是我该怎么做？

Answer 1

现在，TestNG提供了一个称为IDataProviderListener的新侦听IDataProviderListener ，该侦听IDataProviderListener在调用dataprovider之前和之后调用。 使用此方法，我们可以获取dataprovider方法并将其保存为静态方法（在所有配置和测试方法之前调用Dataproviders）。 稍后可以调用此dataprovider方法以在beforeInvocation()方法中获取运行时Object []值。

这不是最干净的解决方案，但是它可以完成工作，并且可以作为进一步增强功能的良好起点。

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.testng.IDataProviderListener;
import org.testng.IDataProviderMethod;
import org.testng.IInvokedMethod;
import org.testng.IInvokedMethodListener2;
import org.testng.ITestContext;
import org.testng.ITestNGMethod;
import org.testng.ITestResult;

public class CustomListen implements IInvokedMethodListener2, IDataProviderListener {

    private static Method savedDataProviderMethod = null;

    @Override
    public void afterDataProviderExecution(IDataProviderMethod dataProviderMethod, ITestNGMethod testNGMethod, ITestContext context) {
        System.out.println(">> afterDataProviderExecution start");
        savedDataProviderMethod = dataProviderMethod.getMethod();
        System.out.println("<< afterDataProviderExecution end");
    }

    @Override public void beforeDataProviderExecution(IDataProviderMethod dataProviderMethod, ITestNGMethod testNGMethod, ITestContext context) {}

    @Override public void afterInvocation(IInvokedMethod method, ITestResult testResult) {}
    @Override public void beforeInvocation(IInvokedMethod method, ITestResult testResult) {}
    @Override public void afterInvocation(IInvokedMethod method, ITestResult testResult, ITestContext context) {}

    @Override
    public void beforeInvocation(IInvokedMethod method, ITestResult testResult, ITestContext context) {
        System.out.println(">> beforeInvocation start");
        // Method customMethod = // code to find custtom method;
        try {
            Object[] params = (Object[]) savedDataProviderMethod.invoke(testResult.getInstance());

            for (Object param : params) {
                System.out.println("Dataprovider return data --" + param);
            }
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
        // customMethod.invokeMethod(testResult.getInstance(), params);
        System.out.println("<< beforeInvocation end");
    }
}

在以下测试类别上通过TestNG 6.14.3进行了测试

import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class ABCTest {
    @DataProvider
    public Object[] one() {
        return new Object[] { 1 };
    }

    @BeforeMethod
    public void setUp(Object[] params) {
        System.out.println("setUp execution");
        Assert.assertEquals(params[0], 1);
    }

    @Test(dataProvider = "one")
    public void test(Integer intParam) {
        System.out.println("test execution");
    }
}

给定输出

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running TestSuite
>> afterDataProviderExecution start
<< afterDataProviderExecution end

>> beforeInvocation start
Dataprovider return data --1
<< beforeInvocation end
setUp execution

>> beforeInvocation start
Dataprovider return data --1
<< beforeInvocation end
test execution