Issue521Test.java

package test.methodinterceptors;

import org.testng.*;
import org.testng.annotations.Test;

import java.util.ArrayList;
import java.util.List;

import test.InvokedMethodNameListener;
import test.SimpleBaseTest;

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

public class Issue521Test extends SimpleBaseTest {

  @Test(description = "test for https://github.com/cbeust/testng/issues/521")
  public void BeforeClass_method_should_be_fired_when_IMethodInterceptor_removes_test_methods() {
    TestNG tng = create(Issue521.class);
    tng.setMethodInterceptor(new IMethodInterceptor() {
      @Override
      public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {
        List<IMethodInstance> instances = new ArrayList<>();
        for (IMethodInstance instance : methods) {
          if (!instance.getMethod().getMethodName().equals("test1")) {
            instances.add(instance);
          }
        }
        return instances;
      }
    });

    InvokedMethodNameListener listener = new InvokedMethodNameListener();
    tng.addListener((ITestNGListener) listener);

    tng.run();

    assertThat(listener.getInvokedMethodNames()).containsExactly("beforeClass", "test2");
  }

}