/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * 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.acegisecurity.taglibs.authz;

import junit.framework.TestCase;

import org.acegisecurity.GrantedAuthority;
import org.acegisecurity.GrantedAuthorityImpl;

import org.acegisecurity.context.SecurityContextHolder;

import org.acegisecurity.providers.TestingAuthenticationToken;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.Tag;


/**
 * DOCUMENT ME!
 *
 * @author Francois Beausoleil
 * @version $Id$
 */
public class AuthorizeTagTests extends TestCase {
    //~ Instance fields ================================================================================================

    private final AuthorizeTag authorizeTag = new AuthorizeTag();
    private TestingAuthenticationToken currentUser;

    //~ Methods ========================================================================================================

    protected void setUp() throws Exception {
        super.setUp();

        currentUser = new TestingAuthenticationToken("abc", "123",
                new GrantedAuthority[] {
                    new GrantedAuthorityImpl("ROLE_SUPERVISOR"), new GrantedAuthorityImpl("ROLE_TELLER"),
                });

        SecurityContextHolder.getContext().setAuthentication(currentUser);
    }

    protected void tearDown() throws Exception {
        SecurityContextHolder.clearContext();
    }

    public void testAlwaysReturnsUnauthorizedIfNoUserFound()
        throws JspException {
        SecurityContextHolder.getContext().setAuthentication(null);

        authorizeTag.setIfAllGranted("ROLE_TELLER");
        assertEquals("prevents request - no principal in Context", Tag.SKIP_BODY, authorizeTag.doStartTag());
    }

    public void testDefaultsToNotOutputtingBodyWhenNoRequiredAuthorities()
        throws JspException {
        assertEquals("", authorizeTag.getIfAllGranted());
        assertEquals("", authorizeTag.getIfAnyGranted());
        assertEquals("", authorizeTag.getIfNotGranted());

        assertEquals("prevents body output - no authorities granted", Tag.SKIP_BODY, authorizeTag.doStartTag());
    }

    public void testOutputsBodyIfOneRolePresent() throws JspException {
        authorizeTag.setIfAnyGranted("ROLE_TELLER");
        assertEquals("authorized - ROLE_TELLER in both sets", Tag.EVAL_BODY_INCLUDE, authorizeTag.doStartTag());
    }

    public void testOutputsBodyWhenAllGranted() throws JspException {
        authorizeTag.setIfAllGranted("ROLE_SUPERVISOR,ROLE_TELLER");
        assertEquals("allows request - all required roles granted on principal", Tag.EVAL_BODY_INCLUDE,
            authorizeTag.doStartTag());
    }

    public void testOutputsBodyWhenNotGrantedSatisfied()
        throws JspException {
        authorizeTag.setIfNotGranted("ROLE_BANKER");
        assertEquals("allows request - principal doesn't have ROLE_BANKER", Tag.EVAL_BODY_INCLUDE,
            authorizeTag.doStartTag());
    }

    public void testPreventsBodyOutputIfNoSecurityContext()
        throws JspException {
        SecurityContextHolder.getContext().setAuthentication(null);
        authorizeTag.setIfAnyGranted("ROLE_BANKER");

        assertEquals("prevents output - no context defined", Tag.SKIP_BODY, authorizeTag.doStartTag());
    }

    public void testSkipsBodyIfNoAnyRolePresent() throws JspException {
        authorizeTag.setIfAnyGranted("ROLE_BANKER");
        assertEquals("unauthorized - ROLE_BANKER not in granted authorities", Tag.SKIP_BODY, authorizeTag.doStartTag());
    }

    public void testSkipsBodyWhenMissingAnAllGranted()
        throws JspException {
        authorizeTag.setIfAllGranted("ROLE_SUPERVISOR,ROLE_TELLER,ROLE_BANKER");
        assertEquals("prevents request - missing ROLE_BANKER on principal", Tag.SKIP_BODY, authorizeTag.doStartTag());
    }

    public void testSkipsBodyWhenNotGrantedUnsatisfied()
        throws JspException {
        authorizeTag.setIfNotGranted("ROLE_TELLER");
        assertEquals("prevents request - principal has ROLE_TELLER", Tag.SKIP_BODY, authorizeTag.doStartTag());
    }
}
