TestNG: How can I run same test case multiple time

Question

I want to run a test case multiple times. Is that configurable in the testng.xml? If I add a loop in the test method, then the results of each run will not be affected in the testng report.

Answer 1

TestNg has one method. You can use this method and run your test case multiple times:

@Test(invocationCount = 100)

public void testCount() {

}

Answer 2

If you don't mind using Sprint, you can create this class:

package somePackage;

import org.junit.Ignore;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
import org.junit.runners.BlockJUnit4ClassRunner;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.InitializationError;
import org.junit.runners.model.Statement;
import org.springframework.test.annotation.Repeat;

public class ExtendedRunner extends BlockJUnit4ClassRunner {

    public ExtendedRunner(Class<?> klass) throws InitializationError {
        super(klass);
    }

    @Override
    protected Description describeChild(FrameworkMethod method) {
        if (method.getAnnotation(Repeat.class) != null
                && method.getAnnotation(Ignore.class) == null) {
            return describeRepeatTest(method);
        }
        return super.describeChild(method);
    }

    private Description describeRepeatTest(FrameworkMethod method) {
        int times = method.getAnnotation(Repeat.class).value();

        Description description = Description.createSuiteDescription(
            testName(method) + " [" + times + " times]",
            method.getAnnotations());

        for (int i = 1; i <= times; i++) {
            description.addChild(Description.createTestDescription(
                getTestClass().getJavaClass(), "[" + i + "] "
                        + testName(method)));
        }
        return description;
    }

    @Override
    protected void runChild(final FrameworkMethod method, RunNotifier notifier) {
        Description description = describeChild(method);

        if (method.getAnnotation(Repeat.class) != null
                && method.getAnnotation(Ignore.class) == null) {
            runRepeatedly(methodBlock(method), description, notifier);
        }
        super.runChild(method, notifier);
    }

    private void runRepeatedly(Statement statement, Description description,
            RunNotifier notifier) {
        for (Description desc : description.getChildren()) {
            runLeaf(statement, desc, notifier);
        }
    }

}

Then in the actual test:

package somePackage;

import *.ExtendedRunner;

import org.junit.Ignore;
import org.junit.runner.RunWith;
import org.springframework.test.annotation.Repeat;

@Ignore
@RunWith(ExtendedRunner.class)
public class RepeatedTest{
    @Repeat(value N)
    public void testToBeRepeated() {

    }
}

Where N is the number of times you want the test to repeat.