assertTrue(comp.compare(rootRegion, firstRegionb) < 0);
assertTrue(comp.compare(firstRegion, firstRegiona) < 0);
assertTrue(comp.compare(firstRegion, firstRegionb) < 0);
assertTrue(comp.compare(firstRegiona, firstRegionb) < 0);
assertTrue(comp.compare(lastRegiona, lastRegiona) == 0);
assertTrue(comp.compare(lastRegionb, lastRegionb) == 0);
assertTrue(comp.compare(rootRegion, lastRegiona) < 0);
assertTrue(comp.compare(rootRegion, lastRegionb) < 0);
assertTrue(comp.compare(lastRegion, lastRegiona) < 0);
assertTrue(comp.compare(lastRegion, lastRegionb) < 0);