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/* ==================================================================== |
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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.ss.formula.functions; |
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import org.apache.poi.hssf.usermodel.HSSFCell; |
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import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator; |
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import org.apache.poi.hssf.usermodel.HSSFSheet; |
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import org.apache.poi.hssf.usermodel.HSSFWorkbook; |
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import org.apache.poi.ss.formula.OperationEvaluationContext; |
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import org.apache.poi.ss.formula.eval.BlankEval; |
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import org.apache.poi.ss.formula.eval.BoolEval; |
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import org.apache.poi.ss.formula.eval.ErrorEval; |
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import org.apache.poi.ss.formula.eval.NumberEval; |
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import org.apache.poi.ss.formula.eval.StringEval; |
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import org.apache.poi.ss.formula.eval.ValueEval; |
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import org.junit.jupiter.api.Test; |
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import java.io.IOException; |
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import static org.apache.poi.ss.util.Utils.addRow; |
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import static org.apache.poi.ss.util.Utils.assertDouble; |
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import static org.junit.jupiter.api.Assertions.assertEquals; |
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/** |
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* Tests for {@link NormDist} |
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*/ |
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final class TestNormDist { |
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private static final OperationEvaluationContext ec = new OperationEvaluationContext(null, null, 0, 0, 0, null); |
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@Test |
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void testBasic() { |
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confirmValue("42", "40", "1.5", true, 0.9087888); |
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//TODO needs investigation |
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//confirmValue("42", "40", "1.5", false, 0.10934); |
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} |
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@Test |
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void testInvalid() { |
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confirmInvalidError("A1","B2","C2", false); |
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} |
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@Test |
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void testNumError() { |
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confirmNumError("42","40","0", false); |
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confirmNumError("42","40","0", true); |
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confirmNumError("42","40","-0.1", false); |
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confirmNumError("42","40","-0.1", true); |
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} |
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//https://support.microsoft.com/en-us/office/normdist-function-126db625-c53e-4591-9a22-c9ff422d6d58 |
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@Test |
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void testMicrosoftExample1() throws IOException { |
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try (HSSFWorkbook wb = new HSSFWorkbook()) { |
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HSSFSheet sheet = wb.createSheet(); |
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addRow(sheet, 0, "Data", "Description"); |
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addRow(sheet, 1, 42, "Value for which you want the distribution"); |
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addRow(sheet, 2, 40, "Arithmetic mean of the distribution"); |
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addRow(sheet, 3, 1.5, "Standard deviation of the distribution"); |
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HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb); |
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HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100); |
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assertDouble(fe, cell, "NORMDIST(A2,A3,A4,TRUE)", 0.9087888, 0.000001); |
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} |
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} |
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private static ValueEval invokeValue(String number1, String number2, String number3, boolean cumulative) { |
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ValueEval[] args = new ValueEval[] { new StringEval(number1), new StringEval(number2), new StringEval(number3), BoolEval.valueOf(cumulative)}; |
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return NormDist.instance.evaluate(args, ec); |
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} |
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private static void confirmValue(String number1, String number2, String number3, boolean cumulative, double expected) { |
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ValueEval result = invokeValue(number1, number2, number3, cumulative); |
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assertEquals(NumberEval.class, result.getClass()); |
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assertEquals(expected, ((NumberEval) result).getNumberValue(), 0.0000001); |
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} |
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private static void confirmInvalidError(String number1, String number2, String number3, boolean cumulative) { |
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ValueEval result = invokeValue(number1, number2, number3, cumulative); |
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assertEquals(ErrorEval.class, result.getClass()); |
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assertEquals(ErrorEval.VALUE_INVALID, result); |
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} |
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private static void confirmNumError(String number1, String number2, String number3, boolean cumulative) { |
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ValueEval result = invokeValue(number1, number2, number3, cumulative); |
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assertEquals(ErrorEval.class, result.getClass()); |
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assertEquals(ErrorEval.NUM_ERROR, result); |
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} |
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} |