jtulach@52: /*
jtulach@52: * The contents of this file are subject to the terms of the Common Development
jtulach@52: * and Distribution License (the License). You may not use this file except in
jtulach@52: * compliance with the License.
jtulach@52: *
jtulach@52: * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
jtulach@52: * or http://www.netbeans.org/cddl.txt.
jtulach@52: *
jtulach@52: * When distributing Covered Code, include this CDDL Header Notice in each file
jtulach@52: * and include the License file at http://www.netbeans.org/cddl.txt.
jtulach@52: * If applicable, add the following below the CDDL Header, with the fields
jtulach@52: * enclosed by brackets [] replaced by your own identifying information:
jtulach@52: * "Portions Copyrighted [year] [name of copyright owner]"
jtulach@52: *
jtulach@52: * The Original Software is NetBeans. The Initial Developer of the Original
jtulach@52: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
jtulach@52: * Microsystems, Inc. All Rights Reserved.
jtulach@52: */
jtulach@52:
jtulach@52: package org.netbeans.apifest.boolcircuit;
jtulach@52:
jtulach@52: import junit.framework.TestCase;
jtulach@52: import junit.framework.*;
jtulach@52:
jtulach@52: /** The initial quest for this APIFest is to create an API for boolean
jtulach@52: * circuits. Such API shall be able to compose a boolean circuit from
jtulach@52: * basic elements and evaluate the result given initial values for
jtulach@52: * input variables.
jtulach@52: *
jtulach@52: * The basic elements include:
jtulach@52: *
jtulach@52: * - negation - has one input and one output and changes 0 on input to
jtulach@52: * on output 1 and 1 to 0
jtulach@52: *
- and - has two inputs and one output. The output is 1 only if both
jtulach@52: * inputs are 1, otherwise it is 0
jtulach@52: *
- or - has two inputs and one output. The output is 1 always, except
jtulach@52: * in the case when both inputs are 0
jtulach@52: *
jtulach@52: *
jtulach@52: *
jtulach@52: * The boolean circuit can be used to represent boolean formulas and compute
jtulach@52: * the results for certain values of its inputs. The individual tasks described
jtulach@52: * as tests bellow.
jtulach@52: *
jtulach@52: *
jtulach@52: * Links of interest:
jtulach@52: *
jtulach@52: */
jtulach@52: public class CircuitTest extends TestCase {
jtulach@52: static {
jtulach@52: // your code shall run without any permissions
jtulach@52: }
jtulach@52:
jtulach@52: public CircuitTest(String testName) {
jtulach@52: super(testName);
jtulach@52: }
jtulach@52:
jtulach@52: // BEGIN: apifest.day1.pinbasedsolution.CircuitTest
jtulach@52: /**
jtulach@52: * Create a circuit to evaluate x1 and x2 and then
jtulach@52: * verify that its result is false for input (false, true) and
jtulach@52: * it is true for input (true, true).
jtulach@52: */
jtulach@52: public void testX1andX2() throws Exception {
jtulach@52: Circuit c = Circuit.construct(
jtulach@52: Element.createAnd(
jtulach@52: Element.createInput(0),
jtulach@52: Element.createInput(1)
jtulach@52: )
jtulach@52: );
jtulach@52:
jtulach@52: assertFalse ("false AND true is false", c.evaluate(false, true));
jtulach@52: assertTrue ("true AND true is true", c.evaluate(true, true));
jtulach@52: }
jtulach@52:
jtulach@52: /**
jtulach@52: * Create a circuit to evaluate (x1 and x2) or x3 and then
jtulach@52: * verify that its result is false for input (false, true, false) and
jtulach@52: * it is true for input (false, false, true).
jtulach@52: */
jtulach@52: public void testX1andX2orX3() throws Exception {
jtulach@52: Circuit c = Circuit.construct(
jtulach@52: Element.createOr(
jtulach@52: Element.createAnd(
jtulach@52: Element.createInput(0),
jtulach@52: Element.createInput(1)
jtulach@52: ),
jtulach@52: Element.createInput(2)
jtulach@52: )
jtulach@52: );
jtulach@52:
jtulach@132: assertFalse (
jtulach@132: "(false AND true) OR false is false",
jtulach@132: c.evaluate(false, true, false)
jtulach@132: );
jtulach@132: assertTrue (
jtulach@132: "(false AND false) OR true is true",
jtulach@132: c.evaluate(false, false, true)
jtulach@132: );
jtulach@52: }
jtulach@52:
jtulach@52: /**
jtulach@52: * Create a circuit to evaluate (x1 or not(x1)) and then
jtulach@52: * verify that its result is true for all values of x1.
jtulach@52: */
jtulach@52: public void testAlwaysTrue() throws Exception {
jtulach@52: Circuit c = Circuit.construct(
jtulach@52: Element.createOr(
jtulach@52: Element.createInput(0),
jtulach@52: Element.createNot(Element.createInput(0))
jtulach@52: )
jtulach@52: );
jtulach@52:
jtulach@52: assertTrue ("tautology is true", c.evaluate(false));
jtulach@52: assertTrue ("tautology is true", c.evaluate(true));
jtulach@52: }
jtulach@52: // END: apifest.day1.pinbasedsolution.CircuitTest
jtulach@52: }