### Question:
RealValue extends Value { @Override Value greaterOrEqual (Value v) { return new BooleanValue (mValue >= v.toRealValue ().mValue); } RealValue(double value);   RealValue(String value); @Override String toString();  }### Answer:
@Test public void testGreaterOrEqual () { assertEquals ("true", mNegativeValue.greaterOrEqual (mNegativeValue).toString ()); assertEquals ("false", mNegativeValue.greaterOrEqual (mZeroValue).toString ()); assertEquals ("true", mZeroValue.greaterOrEqual (mNegativeValue).toString ()); assertEquals ("true", mZeroValue.greaterOrEqual (mZeroValue).toString ()); assertEquals ("false", mZeroValue.greaterOrEqual (mPositiveValue).toString ()); assertEquals ("true", mPositiveValue.greaterOrEqual (mZeroValue).toString ()); assertEquals ("true", mPositiveValue.greaterOrEqual (mPositiveValue).toString ()); }