trunk/src/testcases/org/apache/poi/ss/formula/atp/TestNetworkdaysFunction.java

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   this work for additional information regarding copyright ownership.
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package org.apache.poi.ss.formula.atp;

import static org.apache.poi.ss.formula.eval.ErrorEval.NAME_INVALID;
import static org.apache.poi.ss.formula.eval.ErrorEval.VALUE_INVALID;

import java.util.ArrayList;
import java.util.List;

import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.formula.TwoDEval;
import org.apache.poi.ss.formula.eval.AreaEval;
import org.apache.poi.ss.formula.eval.AreaEvalBase;
import org.apache.poi.ss.formula.eval.NumericValueEval;
import org.apache.poi.ss.formula.eval.StringEval;
import org.apache.poi.ss.formula.eval.ValueEval;

import junit.framework.TestCase;

public class TestNetworkdaysFunction extends TestCase {

    private static final String STARTING_DATE = "2008/10/01";
    private static final String END_DATE = "2009/03/01";
    private static final String FIRST_HOLIDAY = "2008/11/26";
    private static final String SECOND_HOLIDAY = "2008/12/04";
    private static final String THIRD_HOLIDAY = "2009/01/21";

    private static final OperationEvaluationContext EC = new OperationEvaluationContext(null, null, 1, 1, 1, null);

    public void testFailWhenNoArguments() {
        assertEquals(VALUE_INVALID, NetworkdaysFunction.instance.evaluate(new ValueEval[0], null));
    }

    public void testFailWhenLessThan2Arguments() {
        assertEquals(VALUE_INVALID, NetworkdaysFunction.instance.evaluate(new ValueEval[1], null));
    }

    public void testFailWhenMoreThan3Arguments() {
        assertEquals(VALUE_INVALID, NetworkdaysFunction.instance.evaluate(new ValueEval[4], null));
    }

    public void testFailWhenArgumentsAreNotDates() {
        assertEquals(VALUE_INVALID, NetworkdaysFunction.instance.evaluate(new ValueEval[]{ new StringEval("Potato"),
                new StringEval("Cucumber") }, EC));
    }

    public void testFailWhenStartDateAfterEndDate() {
        assertEquals(NAME_INVALID, NetworkdaysFunction.instance.evaluate(new ValueEval[]{ new StringEval(END_DATE),
                new StringEval(STARTING_DATE) }, EC));
    }

    public void testReturnNetworkdays() {
        assertEquals(108, (int) ((NumericValueEval) NetworkdaysFunction.instance.evaluate(new ValueEval[]{
                new StringEval(STARTING_DATE), new StringEval(END_DATE) }, EC)).getNumberValue());
    }

    public void testReturnNetworkdaysWithAHoliday() {
        assertEquals(107, (int) ((NumericValueEval) NetworkdaysFunction.instance.evaluate(new ValueEval[]{
                new StringEval(STARTING_DATE), new StringEval(END_DATE), new StringEval(FIRST_HOLIDAY) },
                EC)).getNumberValue());
    }

    public void testReturnNetworkdaysWithManyHolidays() {
        assertEquals(105, (int) ((NumericValueEval) NetworkdaysFunction.instance.evaluate(new ValueEval[]{
                new StringEval(STARTING_DATE), new StringEval(END_DATE),
                new MockAreaEval(FIRST_HOLIDAY, SECOND_HOLIDAY, THIRD_HOLIDAY) }, EC)).getNumberValue());
    }

    private class MockAreaEval extends AreaEvalBase {

        private List<ValueEval> holidays;

        public MockAreaEval(String... holidays) {
            this(0, 0, 0, holidays.length - 1);
            this.holidays = new ArrayList<ValueEval>();
            for (String holiday : holidays) {
                this.holidays.add(new StringEval(holiday));
            }
        }

        protected MockAreaEval(int firstRow, int firstColumn, int lastRow, int lastColumn) {
            super(firstRow, firstColumn, lastRow, lastColumn);
        }

        @Override
        public ValueEval getRelativeValue(int sheetIndex, int relativeRowIndex, int relativeColumnIndex) {
            return this.holidays.get(relativeColumnIndex);
        }
        @Override
        public ValueEval getRelativeValue(int relativeRowIndex, int relativeColumnIndex) {
            return getRelativeValue(-1, relativeRowIndex, relativeColumnIndex);
        }

        @Override
        public AreaEval offset(int relFirstRowIx, int relLastRowIx, int relFirstColIx, int relLastColIx) {
            return null;
        }

        @Override
        public TwoDEval getColumn(int columnIndex) {
            return null;
        }

        @Override
        public TwoDEval getRow(int rowIndex) {
            return null;
        }

    }
}