Struts example source code file (DateTagTest.java)

This example Struts source code file (DateTagTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Struts tags/keywords

abstracttagtest, calendar, calendar, date, date, datetag, datetagtest, exception, exception, simpledateformat, string, string, text, utc+1, utc+2, util

The Struts DateTagTest.java source code

/*
 * $Id: DateTagTest.java 929448 2010-03-31 09:53:00Z lukaszlenart $
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more 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 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.apache.struts2.views.jsp.ui;

import com.opensymphony.xwork2.ActionContext;
import org.apache.struts2.views.jsp.AbstractTagTest;
import org.apache.struts2.views.jsp.DateTag;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

/**
 * Unit test for {@link org.apache.struts2.components.Date}.
 *
 */
public class DateTagTest extends AbstractTagTest {

    private DateTag tag;

    public void testCustomFormat() throws Exception {
        String format = "yyyy/MM/dd hh:mm:ss";
        Date now = new Date();
        String formatted = new SimpleDateFormat(format).format(now);
        context.put("myDate", now);

        tag.setName("myDate");
        tag.setNice(false);
        tag.setFormat(format);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals(formatted, writer.toString());
    }

    public void testCustomFormatWithTimezone() throws Exception {
        String format = "yyyy/MM/dd hh:mm:ss";
        Date now = Calendar.getInstance(TimeZone.getTimeZone("UTC+1")).getTime();
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        sdf.setTimeZone(TimeZone.getTimeZone("UTC+1"));
        String formatted = sdf.format(now);
        context.put("myDate", now);

        tag.setName("myDate");
        tag.setNice(false);
        tag.setFormat(format);
        tag.setTimezone("UTC+1");
        tag.doStartTag();
        tag.doEndTag();
        assertEquals(formatted, writer.toString());
    }

    public void testCustomFormatWithTimezoneAsExpression() throws Exception {
        String format = "yyyy/MM/dd hh:mm:ss";
        Date now = Calendar.getInstance(TimeZone.getTimeZone("UTC+2")).getTime();
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        sdf.setTimeZone(TimeZone.getTimeZone("UTC+2"));
        String formatted = sdf.format(now);
        context.put("myDate", now);
        context.put("myTimezone", "UTC+2");

        tag.setName("myDate");
        tag.setNice(false);
        tag.setFormat(format);
        tag.setTimezone("myTimezone");
        tag.doStartTag();
        tag.doEndTag();
        assertEquals(formatted, writer.toString());
    }

    public void testCustomFormatCalendar() throws Exception {
        String format = "yyyy/MM/dd hh:mm:ss";
        Calendar calendar = Calendar.getInstance();
        String formatted = new SimpleDateFormat(format).format(calendar.getTime());
        context.put("myDate", calendar);

        tag.setName("myDate");
        tag.setNice(false);
        tag.setFormat(format);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals(formatted, writer.toString());
    }

    public void testDefaultFormat() throws Exception {
        Date now = new Date();
        String formatted = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM,
                ActionContext.getContext().getLocale()).format(now);

        context.put("myDate", now);
        tag.setName("myDate");
        tag.setNice(false);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals(formatted, writer.toString());
    }

    public void testCustomFormatAndComponent() throws Exception {
        String format = "yyyy/MM/dd hh:mm:ss";
        Date now = new Date();
        String formatted = new SimpleDateFormat(format).format(now);
        context.put("myDate", now);

        tag.setName("myDate");
        tag.setFormat(format);
        tag.setNice(false);

        tag.doStartTag();

        // component test must be done between start and end tag
        org.apache.struts2.components.Date component = (org.apache.struts2.components.Date) tag.getComponent();
        assertEquals("myDate", component.getName());
        assertEquals(format, component.getFormat());
        assertEquals(false, component.isNice());

        tag.doEndTag();

        assertEquals(formatted, writer.toString());
    }

    public void testSetId() throws Exception {
        String format = "yyyy/MM/dd hh:mm:ss";
        Date now = new Date();
        String formatted = new SimpleDateFormat(format).format(now);
        context.put("myDate", now);

        tag.setName("myDate");
        tag.setNice(false);
        tag.setFormat(format);
        tag.setId("myId");
        tag.doStartTag();
        tag.doEndTag();
        assertEquals(formatted, context.get("myId"));
    }

    public void testFutureNiceHour() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.HOUR, 1);
        future.add(Calendar.SECOND, 5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("in one hour", writer.toString());
    }

    public void testPastNiceHour() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.HOUR, -1);
        future.add(Calendar.SECOND, -5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("one hour ago", writer.toString());
    }

    public void testFutureNiceHourMinSec() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.HOUR, 2);
        future.add(Calendar.MINUTE, 33);
        future.add(Calendar.SECOND, 5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("in 2 hours, 33 minutes", writer.toString());
    }

    public void testPastNiceHourMin() throws Exception {
        Date now = new Date();
        Calendar past = Calendar.getInstance();
        past.setTime(now);
        past.add(Calendar.HOUR, -4);
        past.add(Calendar.MINUTE, -55);
        past.add(Calendar.SECOND, -5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", past.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("4 hours, 55 minutes ago", writer.toString());
    }

    public void testFutureLessOneMin() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.SECOND, 47);
        future.add(Calendar.SECOND, 5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("in an instant", writer.toString());
    }

    public void testFutureLessOneHour() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.MINUTE, 36);
        future.add(Calendar.SECOND, 5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("in 36 minutes", writer.toString());
    }

    public void testFutureLessOneYear() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.HOUR, 40 * 24);
        future.add(Calendar.SECOND, 5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        assertEquals("in 40 days", writer.toString());
    }

    public void testFutureTwoYears() throws Exception {
        Date now = new Date();
        Calendar future = Calendar.getInstance();
        future.setTime(now);
        future.add(Calendar.YEAR, 2);
        future.add(Calendar.DATE, 1);
        future.add(Calendar.SECOND, 5); // always add a little slack otherwise we could calculate wrong

        context.put("myDate", future.getTime());
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();

        // hmmm the Date component isn't the best to calculate the excat difference so we'll just check
        // that it starts with in 2 years
        assertTrue(writer.toString().startsWith("in 2 years"));
    }

    public void testNoDateObjectInContext() throws Exception {
        context.put("myDate", "this is not a java.util.Date object");
        tag.setName("myDate");
        tag.setNice(true);
        tag.doStartTag();
        tag.doEndTag();
        //should return a blank
        assertEquals("", writer.toString());
    }

    protected void setUp() throws Exception {
        super.setUp();
        tag = new DateTag();
        tag.setPageContext(pageContext);
    }

    protected void tearDown() throws Exception {
        super.tearDown();
        tag = null;
    }

}