/*
 * 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.springframework.security.core.userdetails.cache;

import static org.assertj.core.api.Assertions.*;
import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Ehcache;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.cache.EhCacheBasedUserCache;

/**
 * Tests {@link EhCacheBasedUserCache}.
 *
 * @author Ben Alex
 */
public class EhCacheBasedUserCacheTests {
	private static CacheManager cacheManager;

	// ~ Methods
	// ========================================================================================================
	@BeforeClass
	public static void initCacheManaer() {
		cacheManager = CacheManager.create();
		cacheManager.addCache(new Cache("ehcacheusercachetests", 500, false, false, 30,
				30));
	}

	@AfterClass
	public static void shutdownCacheManager() {
		cacheManager.removalAll();
		cacheManager.shutdown();
	}

	private Ehcache getCache() {
		Ehcache cache = cacheManager.getCache("ehcacheusercachetests");
		cache.removeAll();

		return cache;
	}

	private User getUser() {
		return new User("john", "password", true, true, true, true,
				AuthorityUtils.createAuthorityList("ROLE_ONE", "ROLE_TWO"));
	}

	@Test
	public void cacheOperationsAreSuccessful() throws Exception {
		EhCacheBasedUserCache cache = new EhCacheBasedUserCache();
		cache.setCache(getCache());
		cache.afterPropertiesSet();

		// Check it gets stored in the cache
		cache.putUserInCache(getUser());
		assertThat(getUser().getPassword()).isEqualTo(cache.getUserFromCache(getUser().getUsername()).getPassword());

		// Check it gets removed from the cache
		cache.removeUserFromCache(getUser());
		assertThat(cache.getUserFromCache(getUser().getUsername())).isNull();

		// Check it doesn't return values for null or unknown users
		assertThat(cache.getUserFromCache(null)).isNull();
		assertThat(cache.getUserFromCache("UNKNOWN_USER")).isNull();
	}

	@Test(expected = IllegalArgumentException.class)
	public void startupDetectsMissingCache() throws Exception {
		EhCacheBasedUserCache cache = new EhCacheBasedUserCache();

		cache.afterPropertiesSet();
		fail("Should have thrown IllegalArgumentException");

		Ehcache myCache = getCache();
		cache.setCache(myCache);
		assertThat(cache.getCache()).isEqualTo(myCache);
	}
}
