poi/src/testcases/org/apache/poi/ss/formula/functions/TestHex2Dec.java

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

import junit.framework.TestCase;

import org.apache.poi.hssf.usermodel.HSSFEvaluationWorkbook;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.IStabilityClassifier;
import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.formula.WorkbookEvaluator;
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 Hex2Dec}
 *
 * @author cedric dot walter @ gmail dot com
 */
public final class TestHex2Dec extends TestCase {

    private static ValueEval invokeValue(String number1) {
		ValueEval[] args = new ValueEval[] { new StringEval(number1) };
		return new Hex2Dec().evaluate(args, -1, -1);
	}

    private static void confirmValue(String msg, String number1, String expected) {
		ValueEval result = invokeValue(number1);
		assertEquals(NumberEval.class, result.getClass());
		assertEquals(msg, expected, ((NumberEval) result).getStringValue());
	}

    private static void confirmValueError(String msg, String number1, ErrorEval numError) {
        ValueEval result = invokeValue(number1);
        assertEquals(ErrorEval.class, result.getClass());
        assertEquals(msg, numError, result);
    }

	public void testBasic() {
		confirmValue("Converts octal 'A5' to decimal (165)", "A5", "165");
		confirmValue("Converts octal FFFFFFFF5B to decimal (-165)", "FFFFFFFF5B", "-165");
		confirmValue("Converts octal 3DA408B9 to decimal (-165)", "3DA408B9", "1034160313");
	}

    public void testErrors() {
        confirmValueError("not a valid octal number","GGGGGGG", ErrorEval.NUM_ERROR);
        confirmValueError("not a valid octal number","3.14159", ErrorEval.NUM_ERROR);
    }

    public void testEvalOperationEvaluationContext() {
        OperationEvaluationContext ctx = createContext();
        
        ValueEval[] args = new ValueEval[] { ctx.getRefEval(0, 0) };
        ValueEval result = new Hex2Dec().evaluate(args, ctx);

        assertEquals(NumberEval.class, result.getClass());
        assertEquals("0", ((NumberEval) result).getStringValue());
    }
    
    public void testEvalOperationEvaluationContextFails() {
        OperationEvaluationContext ctx = createContext();
        
        ValueEval[] args = new ValueEval[] { ctx.getRefEval(0, 0), ctx.getRefEval(0, 0) };
        ValueEval result = new Hex2Dec().evaluate(args, ctx);

        assertEquals(ErrorEval.class, result.getClass());
        assertEquals(ErrorEval.VALUE_INVALID, result);
    }

    private OperationEvaluationContext createContext() {
        HSSFWorkbook wb = new HSSFWorkbook();
        wb.createSheet();
        HSSFEvaluationWorkbook workbook = HSSFEvaluationWorkbook.create(wb);
        WorkbookEvaluator workbookEvaluator = new WorkbookEvaluator(workbook, new IStabilityClassifier() {
            
            public boolean isCellFinal(int sheetIndex, int rowIndex, int columnIndex) {
                return true;
            }
        }, null);
        OperationEvaluationContext ctx = new OperationEvaluationContext(workbookEvaluator, 
                workbook, 0, 0, 0, null);
        return ctx;
    }

    public void testRefs() {
        OperationEvaluationContext ctx = createContext();
        
        ValueEval[] args = new ValueEval[] { ctx.getRefEval(0, 0) };
        ValueEval result = new Hex2Dec().evaluate(args, -1, -1);

        assertEquals(NumberEval.class, result.getClass());
        assertEquals("0", ((NumberEval) result).getStringValue());
    }
}