One-liner to compare time ranges for overlapping

OverlapTest.java

package io.myplant.maintenanceevents.server.validation;

import lombok.AllArgsConstructor;
import lombok.Data;
import org.junit.Test;

import java.sql.Time;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

public class OverlapTest {
    @Data
    @AllArgsConstructor
    private static class TimeRange{
        private Long left;
        private Long right;
    }

    private boolean overlaps(TimeRange a, TimeRange b){
        return a.left.compareTo(b.right) == b.left.compareTo(a.right);
    }

    @Test
    public void overlaps1() {
        assertTrue(overlaps(new TimeRange(5L,10L),new TimeRange(9L,11L)));
    }

    @Test
    public void overlaps2() {
        assertTrue(overlaps(new TimeRange(9L,11L),new TimeRange(5L,10L)));
    }

    @Test
    public void nonOverlaps1() {
        assertFalse(overlaps(new TimeRange(9L,11L),new TimeRange(11L,12L)));
    }

    @Test
    public void nonOverlaps2() {
        assertFalse(overlaps(new TimeRange(11L,12L),new TimeRange(9L,11L)));
    }
}