| /* ==================================================================== |
| 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.BlankEval; |
| import org.apache.poi.ss.formula.eval.BoolEval; |
| import org.apache.poi.ss.formula.eval.ErrorEval; |
| import org.apache.poi.ss.formula.eval.NumberEval; |
| import org.apache.poi.ss.formula.eval.ValueEval; |
| /** |
| * Tests for Excel function AVERAGE() |
| * |
| * @author Josh Micich |
| */ |
| public final class TestAverage extends TestCase { |
| |
| private static ValueEval invokeAverage(ValueEval[] args) { |
| return AggregateFunction.AVERAGE.evaluate(args, -1, (short)-1); |
| } |
| |
| private void confirmAverage(ValueEval[] args, double expected) { |
| ValueEval result = invokeAverage(args); |
| assertEquals(NumberEval.class, result.getClass()); |
| assertEquals(expected, ((NumberEval)result).getNumberValue(), 0); |
| } |
| |
| private void confirmAverage(ValueEval[] args, ErrorEval expectedError) { |
| ValueEval result = invokeAverage(args); |
| assertEquals(ErrorEval.class, result.getClass()); |
| assertEquals(expectedError.getErrorCode(), ((ErrorEval)result).getErrorCode()); |
| } |
| |
| public void testBasic() { |
| |
| ValueEval[] values = { |
| new NumberEval(1), |
| new NumberEval(2), |
| new NumberEval(3), |
| new NumberEval(4), |
| }; |
| |
| confirmAverage(values, 2.5); |
| |
| values = new ValueEval[] { |
| new NumberEval(1), |
| new NumberEval(2), |
| BlankEval.instance, |
| new NumberEval(3), |
| BlankEval.instance, |
| new NumberEval(4), |
| BlankEval.instance, |
| }; |
| |
| confirmAverage(values, 2.5); |
| } |
| |
| /** |
| * Valid cases where values are not pure numbers |
| */ |
| public void testUnusualArgs() { |
| ValueEval[] values = { |
| new NumberEval(1), |
| new NumberEval(2), |
| BoolEval.TRUE, |
| BoolEval.FALSE, |
| }; |
| |
| confirmAverage(values, 1.0); |
| |
| } |
| |
| public void testErrors() { |
| ValueEval[] values = { |
| new NumberEval(1), |
| ErrorEval.NAME_INVALID, |
| new NumberEval(3), |
| ErrorEval.DIV_ZERO, |
| }; |
| confirmAverage(values, ErrorEval.NAME_INVALID); |
| } |
| } |