package org.netbeans.apifest.boolcircuit;

 import junit.framework.TestCase;

 import junit.framework.*;

 // BEGIN: apitest.day2.RealTest

 /** This file contains the APIFest quest for day 2. Simply, turn the 

  * boolean circuit into circuit that can compute with double 

  * values from 0 to 1.

  * <p>

  * This means that where ever a boolean was used to represent input or 

  * output values, one can now use any double number from >= 0 and <= 1.

  * Still, to support backward compatibility, the operations with booleans

  * has to be kept available and have to work. In fact False shall be 

  * treated as 0 and True as 1.

  * <p>

  * The basic elements has to be modified to work on doubles

  * in the following way:

  * <ul>

  *   <li>negation - neg(x) = 1 - x, this is correct extension as 

  *                  neg(false)=neg(0)=1-0=1=true

  *   <li>and - and(x,y) = x * y, again this is fine as 

  *             and(true,true)=1*1=true and also

  *             and(false,true)=0*1=0=false

  *   <li>or - or(x,y) = 1 - (1 - x) * (1 - y) and this is also ok as

  *            or(false,false) = 1 - (1 - 0) * (1 - 0) = 1 - 1 = 0 = false

  *            or(true,false) = 1 - (1 - 1) * (1 - 0) = 1 - 0 * 1 = 1 = true

  * </ul>

  * <p>

  * However as the circuits with doubles are more rich than plain boolean 

  * circuits, there is additional requirement to allow any user of your API 

  * to write its own "element" type. This is all going to be exercise in 

  * the tests bellow which you are supposed to implement.

  */

 public class RealTest extends TestCase {

     static {

         // your code shall run without any permissions

     }

     public RealTest(String testName) {

         super(testName);

     }

     /** First of all create a circuit which will evaluate

      * expression (X1 and X2) or not(x1). Hold the circuit

      * in some variable.

      *

      * Feed this circuit with x1=true, x2=false, assert result is false

      *

      * Feed the same circuit with x1=false, x2=true, assert result is true

      *

      * Feed the same circuit with x1=0.0, x2=1.0, assert result is 1.0

      *

      * Feed the same circuit with x1=0.5, x2=0.5, assert result is 0.625

      *

      * Feed the same circuit with x1=0.0, x2=2.0, make sure it 

      * throws an exception

      */

     public void testX1andX2orNotX1() {

         fail("testX1andX2orNotX1");

     }

     /** Ensure that one variable cannot be filled with two different values.

      * Create a circuit for x1 and x1. Make sure that for any usage of your

      * API that would not lead to x1 * x1 result, an exception is thrown.

      * For example if there was a way to feed the circuit with two different 

      * values 0.3 and 0.5 an exception is thrown indicating that this is 

      * improper use of the circuit.

      */

     public void testImproperUseOfTheCircuit() {

         fail("testImproperUseOfTheCircuit");

     }

     /** Write your own element type called "gte" that will have two 

      * inputs and one output.

      * The output value will be 1 if x1 >= x2 and 0 otherwise. 

      * 

      * Create 

      * circuit for following expression: (x1 and not(x1)) gte x1

      *

      * Feed the circuit with 0.5 and verify the result is 0

      *

      * Feed the same circuit with 1 and verify the result is 0

      *

      * Feed the same circuit with 0 and verify the result is 1

      */

     public void testGreaterThanEqualElement() {

         fail("testGreaterThanEqualElement");

     }

 }

 // END: apitest.day2.RealTest