samples/apifest1/day1/alwayscreatenewcircuit/test/org/netbeans/apifest/boolcircuit/CircuitTest.java
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20 package org.netbeans.apifest.boolcircuit;
22 import junit.framework.TestCase;
24 /** The initial quest for this APIFest is to create an API for boolean
25 * circuits. Such API shall be able to compose a boolean circuit from
26 * basic elements and evaluate the result given initial values for
29 * The basic elements include:
31 * <li>negation - has one input and one output and changes 0 on input to
32 * on output 1 and 1 to 0
33 * <li>and - has two inputs and one output. The output is 1 only if both
34 * inputs are 1, otherwise it is 0
35 * <li>or - has two inputs and one output. The output is 1 always, except
36 * in the case when both inputs are 0
40 * The boolean circuit can be used to represent boolean formulas and compute
41 * the results for certain values of its inputs. The individual tasks described
47 * <li><a href="http://en.wikipedia.org/wiki/Truth_table">Truth table</a>
48 * <li><a href="http://en.wikipedia.org/wiki/Tautology_(logic)">Taugology</a>
51 public class CircuitTest extends TestCase {
53 // your code shall run without any permissions
56 public CircuitTest(String testName) {
60 // BEGIN: apifest.day1.alwayscreatenewcircuit.CircuitTest
62 * Create a circuit to evaluate x1 and x2 and then
63 * verify that its result is false for input (false, true) and
64 * it is true for input (true, true).
66 public void testX1andX2() {
70 Circuit outputCircuit = Circuit.and(x1, x2);
71 assertTrue(outputCircuit.output());
75 outputCircuit = Circuit.and(x1, x2);
76 assertFalse(outputCircuit.output());
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() {
88 Circuit outputCircuit = Circuit.or(Circuit.and(x1,x2),x3);
89 assertFalse(outputCircuit.output());
94 outputCircuit = Circuit.or(Circuit.and(x1,x2),x3);
95 assertTrue(outputCircuit.output());
98 * Create a circuit to evaluate (x1 or not(x1)) and then
99 * verify that its result is true for all values of x1.
101 public void testAlwaysTrue() {
103 Circuit outputCircuit = Circuit.or(x1,Circuit.negate(x1));
104 assertTrue(outputCircuit.output());
107 outputCircuit = Circuit.or(x1,Circuit.negate(x1));
108 assertTrue(outputCircuit.output());
110 // END: apifest.day1.alwayscreatenewcircuit.CircuitTest