@Test public void isSingleValue() { SubRange empty = new SubRange(2, 1); SubRange base = new SubRange(0, 10); SubRange singleton = new SubRange(5, 5); assertThat(empty.isSingleValue(), equalTo(false)); assertThat(base.isSingleValue(), equalTo(false)); assertThat(singleton.isSingleValue(), equalTo(true)); } }