JUnit test with multiple anonymous and separately scoped scenarios in one method

gistfile1.txt

import org.junit.Rule;
import org.junit.rules.ErrorCollector;

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

public class ReverseTest {

    @Rule
    public ErrorCollector collector = new ErrorCollector();

    @org.junit.Test
    public void reversesStrings() {
        runAll(
                () -> {
                    String thing = "thing";
                    assertThat(Reverse.reverse("mnb")).isEqualTo("bnm");
                },
                () -> {
                    assertThat(Reverse.reverse("cba")).isEqualTo("abc");
                },
                () -> assertThat(Reverse.reverse("beef")).isEqualTo("feed")
        );
    }

    private void runAll(Runnable... tests) {
        for (Runnable test : tests) {
            collector.checkSucceeds(
                    () -> {
                        test.run();
                        return null;
                    });
        }
    }
}