InvokerTest.java

package test.groupinvocation;

import org.testng.Assert;
import org.testng.ITestNGListener;
import org.testng.TestNG;
import org.testng.annotations.BeforeGroups;
import org.testng.annotations.Test;
import org.testng.xml.XmlSuite;
import org.testng.xml.XmlTest;
import test.InvokedMethodNameListener;
import test.SimpleBaseTest;


public class InvokerTest extends SimpleBaseTest {
    private static final String SMOKE = "smoketests";
    private static final String FUNCTIONAL_TESTS = "functionaltests";

    @Test
    public void testClassWithRedundantGroups() {
        Assert.assertEquals(2, privateRun(RedundantGroupNamesSample.class, SMOKE, FUNCTIONAL_TESTS));
    }

    @Test
    public void testClassWithUniqueGroups() {
        Assert.assertEquals(2, privateRun(UniqueGroupNamesSample.class, SMOKE));
    }

    private int privateRun(final Class<?> className, String... groupNames) {
        XmlSuite suite = createXmlSuite("simple-suite");
        XmlTest xmlTest = createXmlTest(suite, "simple-test", className);
        for (String group : groupNames) {
            xmlTest.addIncludedGroup(group);
        }
        TestNG tng = create(suite);
        InvokedMethodNameListener listener = new InvokedMethodNameListener();
        tng.addListener((ITestNGListener)listener);
        tng.run();
        return listener.getInvokedMethodNames().size();
    }

    public static class UniqueGroupNamesSample {
        @BeforeGroups (groups = {InvokerTest.SMOKE})
        public void before() {
        }

        @Test (groups = {InvokerTest.SMOKE})
        public void test() {
        }
    }


    public static class RedundantGroupNamesSample  {

        @BeforeGroups (groups = {InvokerTest.SMOKE, InvokerTest.FUNCTIONAL_TESTS})
        public void before() {
        }

        @Test (groups = {InvokerTest.SMOKE, InvokerTest.FUNCTIONAL_TESTS})
        public void test() {
        }
    }
}