src/test/java/org/apache/sling/contentparser/api/ParserHelperTest.java

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 ~ to you under the Apache License, Version 2.0 (the
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package org.apache.sling.contentparser.api;

import java.util.Calendar;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.junit.Test;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

public class ParserHelperTest {

    @Test
    public void parseDate() {
        Map<String, int[]> formats = new HashMap<>();
        formats.put("Sun Oct 31 2010 21:48:04 GMT+0100", new int[]{31, 10, 2010, 21, 48, 4, 0, 1});
        formats.put("Sun Oct 31 2010 21:48", null);
        formats.put("2014-09-19T21:20:26.812+02:00", new int[]{19, 9, 2014, 21, 20, 26, 812, 2});
        formats.put("2014-09-19T21:20:26.812", null);
        for (Map.Entry<String, int[]> entry : formats.entrySet()) {
            int[] dateAsInts = entry.getValue();
            Calendar calendar = ParserHelper.parseDate(entry.getKey());
            if (dateAsInts == null) {
                assertNull("Expected a null return value for string " + entry.getKey(), calendar);
            } else {
                assertNotNull("Unexpected parser failure for input " + entry.getKey(), calendar);
                assertEquals(dateAsInts[0], calendar.get(Calendar.DAY_OF_MONTH));
                assertEquals(dateAsInts[1], calendar.get(Calendar.MONTH) + 1);
                assertEquals(dateAsInts[2], calendar.get(Calendar.YEAR));
                assertEquals(dateAsInts[3], calendar.get(Calendar.HOUR_OF_DAY));
                assertEquals(dateAsInts[4], calendar.get(Calendar.MINUTE));
                assertEquals(dateAsInts[5], calendar.get(Calendar.SECOND));
                assertEquals(dateAsInts[6], calendar.get(Calendar.MILLISECOND));
                assertEquals(dateAsInts[7], calendar.getTimeZone().getRawOffset() / 3600 / 1000);

            }
        }
    }

    @Test
    public void convertSingleTypeArray() {
        Object[] empty = new Object[]{};
        assertEquals(empty, ParserHelper.convertSingleTypeArray(empty));

        Object[] nullValues = new Object[] {"string", null};
        IllegalArgumentException nullValuesException = null;
        try {
            ParserHelper.convertSingleTypeArray(nullValues);
        } catch (IllegalArgumentException e) {
            nullValuesException = e;
        }
        assertNotNull("Expected a IllegalArgumentException when the Object array contains multiple types.", nullValuesException);

        Object[] maps = new Object[] {Collections.emptyMap()};
        IllegalArgumentException mapsException = null;
        try {
            ParserHelper.convertSingleTypeArray(maps);
        } catch (IllegalArgumentException e) {
            mapsException = e;
        }
        assertNotNull("Expected a IllegalArgumentException when the Object array contains Map objects.", mapsException);

        Object[] differentTypes = new Object[] {"string", 1, 1L, 1F, Boolean.TRUE};
        IllegalArgumentException differentTypesException = null;
        try {
            ParserHelper.convertSingleTypeArray(differentTypes);
        } catch (IllegalArgumentException e) {
            differentTypesException = e;
        }
        assertNotNull("Expected a IllegalArgumentException when the Object array contains multiple types.", differentTypesException);

        Object[] values = new Object[] {1, 2, 3, 4, 5};
        Object result = ParserHelper.convertSingleTypeArray(values);
        assertTrue("Expected the resulting object to be an Integer array.", result instanceof Integer[]);
        Integer[] typedResult = (Integer[]) result;
        assertArrayEquals("Expected the arrays to be equal.", new Integer[] {1, 2, 3, 4, 5}, typedResult);
    }
}