### Question:
StandardTickUnitSource implements TickUnitSource, Serializable { @Override public boolean equals(Object obj) { if (obj == this) { return true; } return (obj instanceof StandardTickUnitSource); } StandardTickUnitSource(); @Override TickUnit getLargerTickUnit(TickUnit unit); @Override TickUnit getCeilingTickUnit(TickUnit unit); @Override TickUnit getCeilingTickUnit(double size); @Override boolean equals(Object obj); @Override int hashCode();  }### Answer:
@Test public void testEquals() { StandardTickUnitSource t1 = new StandardTickUnitSource(); StandardTickUnitSource t2 = new StandardTickUnitSource(); assertEquals(t1, t2); }