67 lines
2.5 KiB
Java
67 lines
2.5 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record.formula.atp;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import junit.framework.TestCase;
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import org.apache.poi.hssf.record.formula.eval.EvaluationException;
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import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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/**
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* Specific test cases for YearFracCalculator
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*/
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public final class TestYearFracCalculator extends TestCase {
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public void testBasis1() {
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confirm(md(1999, 1, 1), md(1999, 4, 5), 1, 0.257534247);
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confirm(md(1999, 4, 1), md(1999, 4, 5), 1, 0.010958904);
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confirm(md(1999, 4, 1), md(1999, 4, 4), 1, 0.008219178);
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confirm(md(1999, 4, 2), md(1999, 4, 5), 1, 0.008219178);
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confirm(md(1999, 3, 31), md(1999, 4, 3), 1, 0.008219178);
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confirm(md(1999, 4, 5), md(1999, 4, 8), 1, 0.008219178);
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confirm(md(1999, 4, 4), md(1999, 4, 7), 1, 0.008219178);
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}
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private void confirm(double startDate, double endDate, int basis, double expectedValue) {
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double actualValue;
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try {
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actualValue = YearFracCalculator.calculate(startDate, endDate, basis);
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} catch (EvaluationException e) {
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throw new RuntimeException(e);
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}
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double diff = actualValue - expectedValue;
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if (Math.abs(diff) > 0.000000001) {
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double hours = diff * 365 * 24;
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System.out.println(startDate + " " + endDate + " off by " + hours + " hours");
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assertEquals(expectedValue, actualValue, 0.000000001);
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}
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}
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private static double md(int year, int month, int day) {
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Calendar c = new GregorianCalendar();
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c.set(year, month-1, day, 0, 0, 0);
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c.set(Calendar.MILLISECOND, 0);
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return HSSFDateUtil.getExcelDate(c.getTime());
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}
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}
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