GitHub1130Test.java

package test.listeners.github1130;

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

import java.util.ArrayList;

import static org.assertj.core.api.Assertions.assertThat;

public class GitHub1130Test extends SimpleBaseTest {

    @Test(description = "GITHUB-1130: IClassListener should only be instantiated once")
    public void classListenerShouldBeOnlyInstantiatedOnceInMultiTestContext() {
        checkGithub1130(createTests("GITHUB-1130", ASample.class, BSample.class));
    }

    @Test
    public void classListenerShouldBeOnlyInstantiatedOnce() {
        checkGithub1130(create(ASample.class, BSample.class));
    }

    private void checkGithub1130(TestNG tng) {
        MyListener.count = 0;
        MyListener.beforeSuiteCount = new ArrayList<>();
        MyListener.beforeClassCount = new ArrayList<>();
        TestListenerAdapter adapter = new TestListenerAdapter();
        tng.addListener((ITestNGListener) adapter);
        tng.run();
        assertThat(adapter.getFailedTests()).isEmpty();
        assertThat(adapter.getSkippedTests()).isEmpty();
        assertThat(MyListener.beforeSuiteCount.size()).isEqualTo(1);
        assertThat(MyListener.beforeClassCount.size()).isEqualTo(2);
        assertThat(MyListener.beforeSuiteCount.get(0))
                .isEqualTo(MyListener.beforeClassCount.get(0)).isEqualTo(MyListener.beforeClassCount.get(1));
        assertThat(MyListener.count).isEqualTo(1);
    }
}