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Added test for AppleUtil.

This commit is contained in:
Robert Greene 2003-05-26 05:18:29 +00:00
parent 2c61cc312b
commit a9e036be80
1 changed files with 79 additions and 0 deletions
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src/com/webcodepro/applecommander/test/AppleUtilTest.java Normal file
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/*
* AppleCommander - An Apple ][ image utility.
* Copyright (C) 2003 by Robert Greene
* robgreene at users.sourceforge.net
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.webcodepro.applecommander.test;
import com.webcodepro.applecommander.storage.AppleUtil;
import junit.framework.TestCase;
/**
* Test AppleUtil.
*/
public class AppleUtilTest extends TestCase {
public AppleUtilTest(String name) {
super(name);
}
public static void main(String[] args) {
junit.textui.TestRunner.run(AppleUtilTest.class);
}
/**
* These constants were pulled from Applesoft itself.
*/
public void testApplesoftFloat() {
testApplesoftFloat(1.0, 0x8100000000L);
testApplesoftFloat(10.0, 0x8420000000L);
testApplesoftFloat(0.5, 0x8000000000L);
testApplesoftFloat(-0.5, 0x8080000000L);
testApplesoftFloat(0.25, 0x7F00000000L);
testApplesoftFloat(-32768.0, 0x9080000000L);
testApplesoftFloat(99999999.9, 0x9B3EBC1FFDL);
testApplesoftFloat(999999999.0, 0x9E6E6B27FDL);
testApplesoftFloat(1000000000.0, 0x9E6E6B2800L);
testApplesoftFloat(Math.sqrt(0.5), 0x803504F334L);
testApplesoftFloat(Math.sqrt(2.0), 0x813504F334L);
testApplesoftFloat(Math.log(2.0), 0x80317217F8L);
testApplesoftFloat(Math.PI / 2, 0x81490FDAA2L);
testApplesoftFloat(Math.PI * 2, 0x83490FDAA2L);
}
protected void testApplesoftFloat(double question, long correctAnswer) {
log("Testing " + question);
byte[] testAnswer = AppleUtil.getApplesoftFloat(question);
long answer = testAnswer[0] & 0xff;
answer <<= 8;
answer |= testAnswer[1] & 0xff;
answer <<= 8;
answer |= testAnswer[2] & 0xff;
answer <<= 8;
answer |= testAnswer[3] & 0xff;
answer <<= 8;
answer |= testAnswer[4] & 0xff;
// Allow some variance = +/- 1 (that would be the least-significant bit)
if (Math.abs(answer - correctAnswer) > 1) {
fail("Numbers should match - " + question);
}
}
protected void log(String message) {
System.out.println(message);
}
}