Struts example source code file (I18nInterceptorTest.java)

This example Struts source code file (I18nInterceptorTest.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

actioncontext, ca, dk, dk, exception, exception, hashmap, io, locale, locale, map, mockactioninvocation, mockactioninvocation, override, serializable, util

The Struts I18nInterceptorTest.java source code

/*
 * Copyright 2002-2006,2009 The Apache Software Foundation.
 * 
 * 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 com.opensymphony.xwork2.interceptor;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.SimpleFooAction;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.mock.MockActionInvocation;
import junit.framework.TestCase;

import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.io.Serializable;

/**
 * Unit test for I18nInterceptor.
 *
 * @author Claus Ibsen
 */
public class I18nInterceptorTest extends TestCase {

    private I18nInterceptor interceptor;
    private ActionContext ac;
    private Map<String, Serializable> params;
    private Map session;
    private ActionInvocation mai;

    public void testEmptyParamAndSession() throws Exception {
        interceptor.intercept(mai);
    }

    public void testNoSession() throws Exception {
        ac.setSession(null);
        interceptor.intercept(mai);
    }

    public void testDefaultLocale() throws Exception {
        params.put(I18nInterceptor.DEFAULT_PARAMETER, "_"); // bad locale that would get us default locale instead
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        assertNotNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(Locale.getDefault(), session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should create a locale object
    }

    public void testDenmarkLocale() throws Exception {
        params.put(I18nInterceptor.DEFAULT_PARAMETER, "da_DK");
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        Locale denmark = new Locale("da", "DK");
        assertNotNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(denmark, session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should create a locale object
    }

    public void testDenmarkLocaleRequestOnly() throws Exception {
        params.put(I18nInterceptor.DEFAULT_REQUESTONLY_PARAMETER, "da_DK");
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        Locale denmark = new Locale("da", "DK");
        assertNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(denmark, mai.getInvocationContext().getLocale()); // should create a locale object
    }

    public void testCountryOnlyLocale() throws Exception {
        params.put(I18nInterceptor.DEFAULT_PARAMETER, "DK");
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        Locale denmark = new Locale("DK");
        assertNotNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(denmark, session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should create a locale object
    }

    public void testLanguageOnlyLocale() throws Exception {
        params.put(I18nInterceptor.DEFAULT_PARAMETER, "da_");
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        Locale denmark = new Locale("da");
        assertNotNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(denmark, session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should create a locale object
    }

    public void testWithVariant() throws Exception {
        params.put(I18nInterceptor.DEFAULT_PARAMETER, "fr_CA_xx");
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        Locale variant = new Locale("fr", "CA", "xx");
        Locale locale = (Locale) session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE);
        assertNotNull(locale); // should be stored here
        assertEquals(variant, locale);
        assertEquals("xx", locale.getVariant());
    }

    public void testWithVariantRequestOnly() throws Exception {
        params.put(I18nInterceptor.DEFAULT_REQUESTONLY_PARAMETER, "fr_CA_xx");
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed
        assertNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE));

        Locale variant = new Locale("fr", "CA", "xx");
        Locale locale = mai.getInvocationContext().getLocale();
        assertNotNull(locale); // should be stored here
        assertEquals(variant, locale);
        assertEquals("xx", locale.getVariant());
    }

    public void testRealLocaleObjectInParams() throws Exception {
        params.put(I18nInterceptor.DEFAULT_PARAMETER, Locale.CANADA_FRENCH);
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        assertNotNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(Locale.CANADA_FRENCH, session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should create a locale object
    }

    public void testRealLocalesInParams() throws Exception {
        Locale[] locales = new Locale[] { Locale.CANADA_FRENCH };
        assertTrue(locales.getClass().isArray());
        params.put(I18nInterceptor.DEFAULT_PARAMETER, locales);
        interceptor.intercept(mai);

        assertNull(params.get(I18nInterceptor.DEFAULT_PARAMETER)); // should have been removed

        assertNotNull(session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE)); // should be stored here
        assertEquals(Locale.CANADA_FRENCH, session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE));
    }

    public void testSetParameterAndAttributeNames() throws Exception {
        interceptor.setAttributeName("hello");
        interceptor.setParameterName("world");

        params.put("world", Locale.CHINA);
        interceptor.intercept(mai);

        assertNull(params.get("world")); // should have been removed

        assertNotNull(session.get("hello")); // should be stored here
        assertEquals(Locale.CHINA, session.get("hello"));
    }

    public void testActionContextLocaleIsPreservedWhenNotOverridden() throws Exception {
        final Locale locale1 = Locale.TRADITIONAL_CHINESE;
        mai.getInvocationContext().setLocale(locale1);
        interceptor.intercept(mai);

        Locale locale = (Locale) session.get(I18nInterceptor.DEFAULT_SESSION_ATTRIBUTE);
        assertNull(locale); // should not be stored here
        locale = mai.getInvocationContext().getLocale();
        assertEquals(locale1, locale);
    }

    @Override
    protected void setUp() throws Exception {
        interceptor = new I18nInterceptor();
        interceptor.init();
        params = new HashMap<String, Serializable>();
        session = new HashMap();

        Map<String, Object> ctx = new HashMap();
        ctx.put(ActionContext.PARAMETERS, params);
        ctx.put(ActionContext.SESSION, session);
        ac = new ActionContext(ctx);

        Action action = new SimpleFooAction();
        mai = new MockActionInvocation();
        ((MockActionInvocation) mai).setAction(action);
        ((MockActionInvocation) mai).setInvocationContext(ac);
    }

    @Override
    protected void tearDown() throws Exception {
        interceptor.destroy();
        interceptor = null;
        ac = null;
        params = null;
        session = null;
        mai = null;
    }

}