TestNamesTest.java

package test.testnames;

import org.testng.Assert;
import org.testng.TestListenerAdapter;
import org.testng.TestNG;
import org.testng.annotations.Test;
import test.SimpleBaseTest;

import java.util.Collections;

public class TestNamesTest extends SimpleBaseTest {

    @Test
    public void checkWithoutChildSuites() {
        TestListenerAdapter tla = new TestListenerAdapter();
        TestNG tng = create();
        tng.setTestNames(Collections.singletonList("testGroup2"));
        tng.setTestSuites(Collections.singletonList(getPathToResource("testnames/upstream-suite.xml")));
        tng.addListener(tla);
        tng.run();
        Assert.assertEquals(tla.getFailedTests().size(), 0);
        Assert.assertEquals(tla.getPassedTests().size(), 1);
        Assert.assertEquals(tla.getPassedTests().get(0).getMethod().getMethodName(), "sampleOutputTest2");
    }
}