Dodecahedron { public int hashCode() { return 0; } Dodecahedron(String labelIn, String colorIn, double edgeIn); String getLabel(); boolean setLabel(String labelIn); String getColor(); boolean setColor(String colorIn); double getEdge(); boolean setEdge(double edgeIn); double surfaceArea(); double volume(); double surfaceToVolumeRatio(); String toString(); static void resetCount(); boolean equals(Object obj); int hashCode();  }
@Test public void hashCodeTest() { Assert.assertTrue(0 == d.hashCode()); }