samples/apifest1/day1/pinbasedsolution/test/org/netbeans/apifest/boolcircuit/CircuitTest.java
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20 package org.netbeans.apifest.boolcircuit;
22 import junit.framework.TestCase;
23 import junit.framework.*;
25 /** The initial quest for this APIFest is to create an API for boolean
26 * circuits. Such API shall be able to compose a boolean circuit from
27 * basic elements and evaluate the result given initial values for
30 * The basic elements include:
32 * <li>negation - has one input and one output and changes 0 on input to
33 * on output 1 and 1 to 0
34 * <li>and - has two inputs and one output. The output is 1 only if both
35 * inputs are 1, otherwise it is 0
36 * <li>or - has two inputs and one output. The output is 1 always, except
37 * in the case when both inputs are 0
41 * The boolean circuit can be used to represent boolean formulas and compute
42 * the results for certain values of its inputs. The individual tasks described
48 * <li><a href="http://en.wikipedia.org/wiki/Truth_table">Truth table</a>
49 * <li><a href="http://en.wikipedia.org/wiki/Tautology_(logic)">Taugology</a>
52 public class CircuitTest extends TestCase {
54 // your code shall run without any permissions
57 public CircuitTest(String testName) {
61 // BEGIN: apifest.day1.pinbasedsolution.CircuitTest
63 * Create a circuit to evaluate x1 and x2 and then
64 * verify that its result is false for input (false, true) and
65 * it is true for input (true, true).
67 public void testX1andX2() throws Exception {
68 Circuit c = Circuit.construct(
70 Element.createInput(0),
71 Element.createInput(1)
75 assertFalse ("false AND true is false", c.evaluate(false, true));
76 assertTrue ("true AND true is true", c.evaluate(true, true));
80 * Create a circuit to evaluate (x1 and x2) or x3 and then
81 * verify that its result is false for input (false, true, false) and
82 * it is true for input (false, false, true).
84 public void testX1andX2orX3() throws Exception {
85 Circuit c = Circuit.construct(
88 Element.createInput(0),
89 Element.createInput(1)
91 Element.createInput(2)
96 "(false AND true) OR false is false",
97 c.evaluate(false, true, false)
100 "(false AND false) OR true is true",
101 c.evaluate(false, false, true)
106 * Create a circuit to evaluate (x1 or not(x1)) and then
107 * verify that its result is true for all values of x1.
109 public void testAlwaysTrue() throws Exception {
110 Circuit c = Circuit.construct(
112 Element.createInput(0),
113 Element.createNot(Element.createInput(0))
117 assertTrue ("tautology is true", c.evaluate(false));
118 assertTrue ("tautology is true", c.evaluate(true));
120 // END: apifest.day1.pinbasedsolution.CircuitTest