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

import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.formula.eval.*;
import org.apache.poi.util.LocaleUtil;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import java.io.IOException;
import java.util.Locale;

import static org.apache.poi.ss.util.Utils.assertDouble;
import static org.junit.jupiter.api.Assertions.assertEquals;

/**
 * Tests for Excel function TIMEVALUE()
 */
final class TestTimeValue {

    @BeforeAll
    public static void init() {
        LocaleUtil.setUserLocale(Locale.US);
    }

    @AfterAll
    public static void clear() {
        LocaleUtil.setUserLocale(null);
    }

    @Test
    void testTimeValue() {
        LocaleUtil.setUserLocale(Locale.ENGLISH);
        try {
            confirmTimeValue(new StringEval(""));
            confirmTimeValue(BlankEval.instance);

            confirmTimeValueError(new StringEval("non-date text"));

            // // EXCEL
            confirmTimeValue(new StringEval("8/22/2011"), 0); // Serial number of a time entered as text.
            confirmTimeValue(new StringEval("8/22/2011 12:00"), 0.5); // Serial number of a time entered as text.
            confirmTimeValue(new StringEval("1/01/2000 06:00"), 0.25); // Serial number of a time entered as text.
            confirmTimeValue(new StringEval("1/01/2000 6:00 PM"), 0.75); // Serial number of a time entered as text.
            confirmTimeValue(new StringEval("12:00"), 0.5); // Serial number of a time entered as text.
            confirmTimeValue(new StringEval("6:00 PM"), 0.75); // Serial number of a time entered as text.
            confirmTimeValue(new StringEval("12:03:45"), 0.5026041666642413); // Serial number of a time entered as text.

            // this is not yet right as the milliseconds are not counted - but this used to cause a parse issue before
            confirmTimeValue(new StringEval("12:03:45.386"), 0.5026041666642413);
        } finally {
            LocaleUtil.setUserLocale(null);
        }
    }

    @Test
    void testInvalidTimeValue() {
        assertEquals(ErrorEval.VALUE_INVALID, invokeTimeValue(new StringEval("not-date")),
                "not-date evals to invalid");
        assertEquals(ErrorEval.VALUE_INVALID, invokeTimeValue(BoolEval.FALSE),
                "false evals to invalid");
        assertEquals(ErrorEval.VALUE_INVALID, invokeTimeValue(new NumberEval(Math.E)),
                "Math.E evals to invalid");
    }

    @Test
    void testTimeValueInHSSF() throws IOException {
        try (HSSFWorkbook wb = new HSSFWorkbook()) {
            HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
            HSSFSheet sheet = wb.createSheet();
            HSSFRow row = sheet.createRow(0);
            row.createCell(0).setCellValue("8/22/2011 12:00");
            HSSFCell cell = row.createCell(1);
            assertDouble(fe, cell, "TIMEVALUE(A1)", 0.5);
        }
    }

    private ValueEval invokeTimeValue(ValueEval text) {
        return new TimeValue().evaluate(0, 0, text);
    }

    private void confirmTimeValue(ValueEval text, double expected) {
        ValueEval result = invokeTimeValue(text);
        assertEquals(NumberEval.class, result.getClass());
        assertEquals(expected, ((NumberEval) result).getNumberValue(), 0.0001);
    }

    private void confirmTimeValue(ValueEval text) {
        ValueEval result = invokeTimeValue(text);
        assertEquals(BlankEval.class, result.getClass());
    }

    private void confirmTimeValueError(ValueEval text) {
        ValueEval result = invokeTimeValue(text);
        assertEquals(ErrorEval.class, result.getClass());
        assertEquals(ErrorEval.VALUE_INVALID.getErrorCode(), ((ErrorEval) result).getErrorCode());
    }
}