API assertion failure message to be displayed in my testNG report

Question

I am having multiple assertions (assertTrue) in my test method, I want to pass the assertion failure to my @AfterMethod on which ever assertion my test failed so that I can get the exact location where my API test failed. Is there any way to achieve this? Using Rest assured, Maven & TestNG.

Answer 1

Every @AfterMethod can accept a ITestResult as a parameter, which TestNG during execution natively injects the test result of the last @Test. So you can examine the ITestResult object and then proceed further.

Here's a simple sample

import org.testng.Assert;
import org.testng.ITestResult;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.Test;

import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;

public class SampleTestClass {

    @Test
    public void passMethod() {
        Assert.assertTrue(true);
    }

    @Test
    public void failMethod() {
        Assert.assertTrue(false);
    }

    @AfterMethod
    public void afterMethod(ITestResult testResult) {
        if (testResult.isSuccess()) {
            return;
        }
        Throwable throwable = testResult.getThrowable();
        StringWriter sw = new StringWriter();
        PrintWriter writer = new PrintWriter(sw);
        throwable.printStackTrace(writer);
        System.err.println("****" + sw.getBuffer().toString());
    }
}