TestDateParser.java

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   contributor license agreements.  See the NOTICE file distributed with
   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.atp;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;

import java.util.Calendar;

import org.apache.poi.ss.formula.eval.ErrorEval;
import org.apache.poi.ss.formula.eval.EvaluationException;
import org.apache.poi.util.LocaleUtil;
import org.junit.Test;

public class TestDateParser {
    @Test
    public void testFailWhenNoDate() {
        try {
            DateParser.parseDate("potato");
            fail("Shouldn't parse potato!");
        } catch (EvaluationException e) {
            assertEquals(ErrorEval.VALUE_INVALID, e.getErrorEval());
        }
    }

    @Test
    public void testFailWhenLooksLikeDateButItIsnt() {
        try {
            DateParser.parseDate("potato/cucumber/banana");
            fail("Shouldn't parse this thing!");
        } catch (EvaluationException e) {
            assertEquals(ErrorEval.VALUE_INVALID, e.getErrorEval());
        }
    }

    @Test
    public void testFailWhenIsInvalidDate() {
        try {
            DateParser.parseDate("13/13/13");
            fail("Shouldn't parse this thing!");
        } catch (EvaluationException e) {
            assertEquals(ErrorEval.VALUE_INVALID, e.getErrorEval());
        }
    }

    @Test
    public void testShouldParseValidDate() throws EvaluationException {
        Calendar expDate = LocaleUtil.getLocaleCalendar(1984, Calendar.OCTOBER, 20);
        Calendar actDate = DateParser.parseDate("1984/10/20");
        assertEquals("Had: " + expDate.getTime() + " and " + actDate.getTime() + "/" + 
                expDate.getTimeInMillis() + "ms and " + actDate.getTimeInMillis() + "ms", 
                expDate, actDate);
    }

    @Test
    public void testShouldIgnoreTimestamp() throws EvaluationException {
        Calendar expDate = LocaleUtil.getLocaleCalendar(1984, Calendar.OCTOBER, 20);
        Calendar actDate = DateParser.parseDate("1984/10/20 12:34:56");
        assertEquals("Had: " + expDate.getTime() + " and " + actDate.getTime() + "/" + 
                expDate.getTimeInMillis() + "ms and " + actDate.getTimeInMillis() + "ms", 
                expDate, actDate);
    }

}