Groovy example source code file (DateGDKTest.groovy)

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Java - Groovy tags/keywords

calendar, date, date, dategdktest, gmt, groovytestcase, locale, locale, mmm, simpledateformat, string, string, text, timezone, timezone

The Groovy DateGDKTest.groovy source code

/*
 * Copyright 2003-2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.codehaus.groovy.runtime

import java.text.DateFormat
import java.text.SimpleDateFormat

/**
 * @author tnichols
 */
class DateGDKTest extends GroovyTestCase {

    void testGDKDateMethods() {
        Locale defaultLocale = Locale.default
        TimeZone defaultTZ = TimeZone.default
        Locale locale = Locale.UK
        Locale.setDefault locale // set this otherwise the test will fail if your locale isn't the same
        TimeZone.setDefault TimeZone.getTimeZone('Etc/GMT')
        Date d = new Date(0)
//        println d.dateString
//        println d.timeString
//        println d.dateTimeString
        assertEquals '1970-01-01', d.format('yyyy-MM-dd')
        assertEquals DateFormat.getDateInstance(DateFormat.SHORT, locale).format(d), d.dateString
        assertEquals '01/01/70', d.dateString
        assertEquals DateFormat.getTimeInstance(DateFormat.MEDIUM, locale).format(d), d.timeString
        assertEquals '00:00:00', d.timeString
        assertEquals DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM, locale).format(d), d.dateTimeString
        assertEquals '01/01/70 00:00:00', d.dateTimeString

        Locale.default = defaultLocale
        TimeZone.setDefault defaultTZ
    }

    void testStaticParse() {
        TimeZone defaultTZ = TimeZone.default
        TimeZone.setDefault TimeZone.getTimeZone('Etc/GMT')

        Date d = Date.parse('yy/MM/dd hh:mm:ss', '70/01/01 00:00:00')
        assertEquals 0, d.time

        TimeZone.setDefault defaultTZ
    }

    void testRoundTrip() {
        Date d = new Date()
        String pattern = 'dd MMM yyyy, hh:mm:ss,SSS a z'
        String out = d.format(pattern)

        Date d2 = Date.parse(pattern, out)

        assertEquals d.time, d2.time
    }

    void testCalendarTimeZone() {
        Locale defaultLocale = Locale.default
        TimeZone defaultTZ = TimeZone.default
        Locale locale = Locale.UK
        Locale.setDefault locale // set this otherwise the test will fail if your locale isn't the same
        TimeZone.setDefault TimeZone.getTimeZone('Etc/GMT')

        def offset = 8
        def notLocalTZ = TimeZone.getTimeZone("GMT-$offset")
        Calendar cal = Calendar.getInstance(notLocalTZ)
//        println cal.time.format( 'MM/dd/yyyy HH:mm:ss' )
//        println cal.format( 'MM/dd/yyyy HH:mm:ss' )
        def offsetHr = cal.format('HH') as int
        def hr = cal.time.format('HH') as int

        if (hr < offset) hr += 24 // if GMT hr has rolled over to next day
        // offset should be 8 hours behind GMT:
        assertEquals(offset, hr - offsetHr)

        Locale.default = defaultLocale
        TimeZone.setDefault defaultTZ
    }

    static SimpleDateFormat f = new SimpleDateFormat('MM/dd/yyyy')

    static java.sql.Date sqlDate(String s) {
        return new java.sql.Date(f.parse(s).time)
    }

    void testMinusDates() {
        assertEquals(10, f.parse("1/11/2007") - f.parse("1/1/2007"))
        assertEquals(-10, f.parse("1/1/2007") - f.parse("1/11/2007"))
        assertEquals(375, f.parse("1/11/2008") - f.parse("1/1/2007"))
        assertEquals(356, f.parse("1/1/2008") - f.parse("1/10/2007"))
        assertEquals(1, f.parse("7/12/2007") - f.parse("7/11/2007"))
        assertEquals(0, f.parse("1/1/2007") - f.parse("1/1/2007"))
        assertEquals(-1, f.parse("12/31/2007") - f.parse("1/1/2008"))
        assertEquals(365, f.parse("1/1/2008") - f.parse("1/1/2007"))
        assertEquals(36525, f.parse("1/1/2008") - f.parse("1/1/1908"))

        assertEquals(1, sqlDate("7/12/2007") - f.parse("7/11/2007"))
        assertEquals(0, sqlDate("1/1/2007") - sqlDate("1/1/2007"))
        assertEquals(-1, f.parse("12/31/2007") - sqlDate("1/1/2008"))
        assertEquals(365, sqlDate("1/1/2008") - sqlDate("1/1/2007"))
        assertEquals(36525, f.parse("1/1/2008") - sqlDate("1/1/1908"))

        Date d = f.parse("7/4/1776");
        assertEquals(44, (d + 44) - d);

        java.sql.Date sqld = sqlDate("7/4/1776");
        assertEquals(-4444, (sqld - 4444) - sqld);
    }

    /** GROOVY-3374 & GROOVY-4788 */
    void testClearTime() {
        def dateNow = new Date().clearTime()

        def calendarNow = Calendar.getInstance()
        calendarNow.clearTime()

        assert dateNow == calendarNow.time

        assert calendarNow.get(Calendar.HOUR) == 0
        assert calendarNow.get(Calendar.MINUTE) == 0
        assert calendarNow.get(Calendar.SECOND) == 0
        assert calendarNow.get(Calendar.MILLISECOND) == 0
    }
}