### Question:
AbstractMechanism implements Mechanism { @Override public int compareTo(Mechanism other) { if (getPriority() < other.getPriority()) { return -1; } else if (getPriority() > other.getPriority()) { return 1; } return 0; }  @Override void init(Map<String, String> options); @Override void verifyCompletion(); @Override int compareTo(Mechanism other); @Override void setUsername(String value); @Override String getUsername(); @Override void setPassword(String value); @Override String getPassword(); @Override String toString(); @Override boolean isEnabledByDefault();  }### Answer:
@Test public void testCompareTo() { Mechanism mech1 = new Mechanism(1); Mechanism mech2 = new Mechanism(2); assertEquals(-1, mech1.compareTo(mech2)); assertEquals(0, mech1.compareTo(mech1)); assertEquals(1, mech2.compareTo(mech1)); }