samples/apifest1/day1/welltestedsolution/test/org/netbeans/apifest/boolcircuit/CircuitTest.java
Adding samples from API fest to the repository, including pieces of their code in the document, not just links
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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 /** The initial quest for this APIFest is to create an API for boolean
33 * circuits. Such API shall be able to compose a boolean circuit from
34 * basic elements and evaluate the result given initial values for
37 * The basic elements include:
39 * <li>negation - has one input and one output and changes 0 on input to
40 * on output 1 and 1 to 0
41 * <li>and - has two inputs and one output. The output is 1 only if both
42 * inputs are 1, otherwise it is 0
43 * <li>or - has two inputs and one output. The output is 1 always, except
44 * in the case when both inputs are 0
48 * The boolean circuit can be used to represent boolean formulas and compute
49 * the results for certain values of its inputs. The individual tasks described
55 * <li><a href="http://en.wikipedia.org/wiki/Truth_table">Truth table</a>
56 * <li><a href="http://en.wikipedia.org/wiki/Tautology_(logic)">Taugology</a>
59 public class CircuitTest extends TestCase {
61 // your code shall run without any permissions
64 public CircuitTest(String testName) {
68 protected void setUp() throws Exception {
71 protected void tearDown() throws Exception {
76 * Create a circuit to evaluate x1 and x2 and then
77 * verify that its result is false for input (false, true) and
78 * it is true for input (true, true).
80 public void testX1andX2() {
81 assertFalse("x1 and x2 for (false, true)", Circuit.createAndCircuit(null, null).evaluate(false, true));
82 assertTrue("x1 and x2 for (true, true)", Circuit.createAndCircuit(null, null).evaluate(true, true));
86 * Create a circuit to evaluate (x1 and x2) or x3 and then
87 * verify that its result is false for input (false, true, false) and
88 * it is true for input (false, false, true).
90 public void testX1andX2orX3() {
91 Circuit c = Circuit.createOrCircuit(Circuit.createAndCircuit(null, null), null);
92 assertFalse("(x1 and x2) or x3", c.evaluate(false, true, false));
93 assertTrue("(x1 and x2) or x3", c.evaluate(false, false, true));
95 assertTrue("(x1 and x2) or x3", c.evaluate(true, true, true));
96 assertFalse("(x1 and x2) or x3", c.evaluate(true, false, false));
99 * Create a circuit to evaluate (x1 or not(x1)) and then
100 * verify that its result is true for all values of x1.
102 public void testAlwaysTrue() {
103 Circuit c = Circuit.createOrCircuit(null, Circuit.createNotCircuit(null));
104 assertTrue("(x1 or not(x1)) for false", c.evaluate(false, false));
105 assertTrue("(x1 or not(x1)) for false", c.evaluate(true, true));
108 public void testOr() {
109 Circuit c = Circuit.createOrCircuit(null, null);
112 } catch (IllegalArgumentException iae) { // expected
116 } catch (IllegalArgumentException iae) { // expected
119 c.evaluate(true, true, true);
120 } catch (IllegalArgumentException iae) { // expected
122 assertFalse("(x1 or x2)", c.evaluate(false, false));
123 assertTrue("(x1 or x2)", c.evaluate(true, false));
124 assertTrue("(x1 or x2)", c.evaluate(false, true));
125 assertTrue("(x1 or x2)", c.evaluate(true, true));
129 public void testAnd() {
130 Circuit c = Circuit.createAndCircuit(null, null);
133 } catch (IllegalArgumentException iae) { // expected
137 } catch (IllegalArgumentException iae) { // expected
140 c.evaluate(true, true, true);
141 } catch (IllegalArgumentException iae) { // expected
143 assertFalse("(x1 or x2)", c.evaluate(false, false));
144 assertFalse("(x1 or x2)", c.evaluate(true, false));
145 assertFalse("(x1 or x2)", c.evaluate(false, true));
146 assertTrue("(x1 or x2)", c.evaluate(true, true));
150 public void testNot() {
151 Circuit c = Circuit.createNotCircuit(null);
154 } catch (IllegalArgumentException iae) { // expected
157 c.evaluate(true, true);
158 } catch (IllegalArgumentException iae) { // expected
160 assertFalse("(x1 or x2)", c.evaluate(true));
161 assertTrue("(x1 or x2)", c.evaluate(false));