main/src/test/java/org/apache/poi/ss/formula/functions/TestSubstitute.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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       http://www.apache.org/licenses/LICENSE-2.0

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

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.StringValueEval;
import org.apache.poi.ss.usermodel.FormulaError;
import org.junit.jupiter.api.Test;

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

class TestSubstitute {
    @Test
    void testSubstitute() {
        Substitute fun = new Substitute();
        assertEquals("ADEFC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("DEF"))).getStringValue());

        assertEquals("ACDEC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("CDE"))).getStringValue());

        assertEquals("ACDECCDEA", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABCBA"), new StringEval("B"), new StringEval("CDE"))).getStringValue());
    }

    @Test
    void testSubstituteInvalidArg() {
        Substitute fun = new Substitute();
        assertEquals(ErrorEval.valueOf(FormulaError.VALUE.getLongCode()),
                fun.evaluate(0, 1,
                ErrorEval.valueOf(FormulaError.VALUE.getLongCode()), new StringEval("B"), new StringEval("DEF")));

        assertEquals(ErrorEval.valueOf(FormulaError.VALUE.getLongCode()),
                fun.evaluate(0, 1,
                ErrorEval.valueOf(FormulaError.VALUE.getLongCode()), new StringEval("B"), new StringEval("DEF"),
                        new NumberEval(1)));

        // fails on occurrence below 1
        assertEquals(ErrorEval.valueOf(FormulaError.VALUE.getLongCode()),
                fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("CDE"), new NumberEval(0)));
    }

    @Test
    void testSubstituteOne() {
        Substitute fun = new Substitute();
        assertEquals("ADEFC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("DEF"), new NumberEval(1))).getStringValue());

        assertEquals("ACDEC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("CDE"), new NumberEval(1))).getStringValue());
    }

    @Test
    void testSubstituteNotFound() {
        Substitute fun = new Substitute();
        assertEquals("ABC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("DEF"), new NumberEval(12))).getStringValue());

        assertEquals("ABC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval("B"), new StringEval("CDE"), new NumberEval(2))).getStringValue());
    }

    @Test
    void testSearchEmpty() {
        Substitute fun = new Substitute();
        assertEquals("ABC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval(""), new StringEval("CDE"))).getStringValue());
        assertEquals("ABC", ((StringValueEval)fun.evaluate(0, 1,
                new StringEval("ABC"), new StringEval(""), new StringEval("CDE"), new NumberEval(1))).getStringValue());
    }
}