| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| |
| package org.apache.poi.ss.formula.functions; |
| |
| import junit.framework.TestCase; |
| import org.apache.poi.ss.formula.eval.ErrorEval; |
| import org.apache.poi.ss.formula.eval.NumberEval; |
| import org.apache.poi.ss.formula.eval.StringEval; |
| import org.apache.poi.ss.formula.eval.ValueEval; |
| |
| /** |
| * Tests for {@link org.apache.poi.ss.formula.functions.Delta} |
| * |
| * @author cedric dot walter @ gmail dot com |
| */ |
| public final class TestDelta extends TestCase { |
| |
| private static ValueEval invokeValue(String number1, String number2) { |
| ValueEval[] args = new ValueEval[] { new StringEval(number1), new StringEval(number2), }; |
| return new Delta().evaluate(args, -1, -1); |
| } |
| |
| private static void confirmValue(String number1, String number2, double expected) { |
| ValueEval result = invokeValue(number1, number2); |
| assertEquals(NumberEval.class, result.getClass()); |
| assertEquals(expected, ((NumberEval) result).getNumberValue(), 0.0); |
| } |
| |
| private static void confirmValueError(String number1, String number2) { |
| ValueEval result = invokeValue(number1, number2); |
| assertEquals(ErrorEval.class, result.getClass()); |
| assertEquals(ErrorEval.VALUE_INVALID, result); |
| } |
| |
| public void testBasic() { |
| confirmValue("5","4", 0); // Checks whether 5 equals 4 (0) |
| confirmValue("5","5", 1); // Checks whether 5 equals 5 (1) |
| |
| confirmValue("0.5","0", 0); // Checks whether 0.5 equals 0 (0) |
| confirmValue("0.50","0.5", 1); |
| confirmValue("0.5000000000","0.5", 1); |
| } |
| |
| public void testErrors() { |
| confirmValueError("A1","B2"); |
| confirmValueError("AAAA","BBBB"); |
| } |
| } |