### Question:
BasicRule implements Rule { @Override public int compareTo(final Rule rule) { if (getPriority() < rule.getPriority()) { return -1; } else if (getPriority() > rule.getPriority()) { return 1; } else { return getName().compareTo(rule.getName()); } } BasicRule();  BasicRule(final String name);  BasicRule(final String name, final String description);  BasicRule(final String name, final String description, final int priority); boolean evaluate(Facts facts); void execute(Facts facts); String getName(); String getDescription(); void setDescription(final String description); int getPriority(); void setPriority(final int priority); @Override boolean equals(final Object o); @Override int hashCode(); @Override String toString(); @Override int compareTo(final Rule rule);  }### Answer:
@Test public void testCompareTo() { FirstRule rule1 = new FirstRule(); FirstRule rule2 = new FirstRule(); assertThat(rule1.compareTo(rule2)).isEqualTo(0); assertThat(rule2.compareTo(rule1)).isEqualTo(0); }