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4 * compliance with the License.
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7 * or http://www.netbeans.org/cddl.txt.
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15 * The Original Software is NetBeans. The Initial Developer of the Original
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20 package org.netbeans.apifest.boolcircuit;
22 import java.security.CodeSource;
23 import java.security.Permission;
24 import java.security.PermissionCollection;
25 import java.security.Policy;
26 import java.util.Collection;
27 import java.util.Collections;
28 import java.util.Enumeration;
29 import junit.framework.TestCase;
30 import junit.framework.*;
32 // BEGIN: apitest.day2.RealTest
33 /** This file contains the APIFest quest for day 2. Simply, turn the
34 * boolean circuit into circuit that can compute with double values from 0 to 1.
36 * This means that where ever a boolean was used to represent input or
37 * output values, one can now use any double number from >= 0 and <= 1.
38 * Still, to support backward compatibility, the operations with booleans
39 * has to be kept available and have to work. In fact False shall be
40 * treated as 0 and True as 1.
42 * The basic elements has to be modified to work on doubles in the following
45 * <li>negation - neg(x) = 1 - x, this is correct extension as neg(false)=neg(0)=1-0=1=true
46 * <li>and - and(x,y) = x * y, again this is fine as and(true,true)=1*1=true and also
47 * and(false,true)=0*1=0=false
48 * <li>or - or(x,y) = 1 - (1 - x) * (1 - y) and this is also ok as
49 * or(false,false) = 1 - (1 - 0) * (1 - 0) = 1 - 1 = 0 = false
50 * or(true,false) = 1 - (1 - 1) * (1 - 0) = 1 - 0 * 1 = 1 = true
53 * However as the circuits with doubles are more rich than plain boolean circuits,
54 * there is additional requirement to allow any user of your API to write its
55 * own "element" type. This is all going to be exercise in the tests bellow
56 * which you are supposed to implement.
58 public class RealTest extends TestCase {
60 // your code shall run without any permissions
63 public RealTest(String testName) {
68 /** First of all create a circuit which will evaluate
69 * expression (X1 and X2) or not(x1). Hold the circuit
72 * Feed this circuit with x1=true, x2=false, assert result is false
74 * Feed the same circuit with x1=false, x2=true, assert result is true
76 * Feed the same circuit with x1=0.0, x2=1.0, assert result is 1.0
78 * Feed the same circuit with x1=0.5, x2=0.5, assert result is 0.625
80 * Feed the same circuit with x1=0.0, x2=2.0, make sure it throws an exception
82 public void testX1andX2orNotX1() {
83 fail("testX1andX2orNotX1");
86 /** Ensure that one variable cannot be filled with two different values.
87 * Create a circuit for x1 and x1. Make sure that for any usage of your
88 * API that would not lead to x1 * x1 result, an exception is thrown.
89 * For example if there was a way to feed the circuit with two different
90 * values 0.3 and 0.5 an exception is thrown indicating that this is
91 * improper use of the circuit.
93 public void testImproperUseOfTheCircuit() {
94 fail("testImproperUseOfTheCircuit");
97 /** Write your own element type called "gte" that will have two inputs and one output.
98 * The output value will be 1 if x1 >= x2 and 0 otherwise.
101 * circuit for following expression: (x1 and not(x1)) gte x1
103 * Feed the circuit with 0.5 and verify the result is 0
105 * Feed the same circuit with 1 and verify the result is 0
107 * Feed the same circuit with 0 and verify the result is 1
109 public void testGreaterThanEqualElement() {
110 fail("testGreaterThanEqualElement");
113 // END: apitest.day2.RealTest