main/src/test/java/org/apache/poi/ss/formula/functions/TestBin2Dec.java

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   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
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package org.apache.poi.ss.formula.functions;

import static org.junit.jupiter.api.Assertions.assertEquals;

import org.apache.poi.hssf.usermodel.HSSFEvaluationWorkbook;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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;
import org.junit.jupiter.api.Test;

/**
 * Tests for {@link Bin2Dec}
 *
 * @author cedric dot walter @ gmail dot com
 */
final class TestBin2Dec {

    private static ValueEval invokeValue(String number1) {
		ValueEval[] args = new ValueEval[] { new StringEval(number1) };
		return new Bin2Dec().evaluate(args, -1, -1);
	}

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

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

    @Test
	void testBasic() {
		confirmValue("Converts binary '00101' to decimal (5)", "00101", "5");
		confirmValue("Converts binary '1111111111' to decimal (-1)", "1111111111", "-1");
		confirmValue("Converts binary '1111111110' to decimal (-2)", "1111111110", "-2");
        confirmValue("Converts binary '0111111111' to decimal (511)", "0111111111", "511");
	}

    @Test
    void testErrors() {
        confirmValueError("does not support more than 10 digits","01010101010", ErrorEval.NUM_ERROR);
        confirmValueError("not a valid binary number","GGGGGGG", ErrorEval.NUM_ERROR);
        confirmValueError("not a valid binary number","3.14159", ErrorEval.NUM_ERROR);
    }

    @Test
    void testEvalOperationEvaluationContext() {
        OperationEvaluationContext ctx = createContext();

        ValueEval[] args = new ValueEval[] { ctx.getRefEval(0, 0) };
        ValueEval result = new Bin2Dec().evaluate(args, ctx);

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

    @Test
    void testEvalOperationEvaluationContextFails() {
        OperationEvaluationContext ctx = createContext();

        ValueEval[] args = new ValueEval[] { ctx.getRefEval(0, 0), ctx.getRefEval(0, 0) };
        ValueEval result = new Bin2Dec().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, (sheetIndex, rowIndex, columnIndex) -> true, null);
        return new OperationEvaluationContext(workbookEvaluator, workbook, 0, 0, 0, null);
    }

    @Test
    void testRefs() {
        OperationEvaluationContext ctx = createContext();

        ValueEval[] args = new ValueEval[] { ctx.getRefEval(0, 0) };
        ValueEval result = new Bin2Dec().evaluate(args, -1, -1);

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