/*
 * 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.access.vote;

import static org.assertj.core.api.Assertions.assertThat;

import static org.mockito.Mockito.*;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.springframework.security.access.AccessDecisionVoter;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.TestingAuthenticationToken;
import org.springframework.security.core.Authentication;

/**
 * Tests {@link AffirmativeBased}.
 *
 * @author Ben Alex
 */
public class AffirmativeBasedTests {
	private final List<ConfigAttribute> attrs = new ArrayList<ConfigAttribute>();
	private final Authentication user = new TestingAuthenticationToken("somebody",
			"password", "ROLE_1", "ROLE_2");
	private AffirmativeBased mgr;
	private AccessDecisionVoter grant;
	private AccessDecisionVoter abstain;
	private AccessDecisionVoter deny;

	@Before
	@SuppressWarnings("unchecked")
	public void setup() {

		grant = mock(AccessDecisionVoter.class);
		abstain = mock(AccessDecisionVoter.class);
		deny = mock(AccessDecisionVoter.class);

		when(grant.vote(any(Authentication.class), any(Object.class), any(List.class)))
				.thenReturn(AccessDecisionVoter.ACCESS_GRANTED);
		when(abstain.vote(any(Authentication.class), any(Object.class), any(List.class)))
				.thenReturn(AccessDecisionVoter.ACCESS_ABSTAIN);
		when(deny.vote(any(Authentication.class), any(Object.class), any(List.class)))
				.thenReturn(AccessDecisionVoter.ACCESS_DENIED);
	}

	@Test
	public void oneAffirmativeVoteOneDenyVoteOneAbstainVoteGrantsAccess()
			throws Exception {

		mgr = new AffirmativeBased(Arrays.<AccessDecisionVoter<? extends Object>> asList(
				grant, deny, abstain));
		mgr.afterPropertiesSet();
		mgr.decide(user, new Object(), attrs);
	}

	@Test
	public void oneDenyVoteOneAbstainVoteOneAffirmativeVoteGrantsAccess()
			throws Exception {
		mgr = new AffirmativeBased(Arrays.<AccessDecisionVoter<? extends Object>> asList(
				deny, abstain, grant));
		mgr.decide(user, new Object(), attrs);
	}

	@Test
	public void oneAffirmativeVoteTwoAbstainVotesGrantsAccess() throws Exception {
		mgr = new AffirmativeBased(Arrays.<AccessDecisionVoter<? extends Object>> asList(
				grant, abstain, abstain));
		mgr.decide(user, new Object(), attrs);
	}

	@Test(expected = AccessDeniedException.class)
	public void oneDenyVoteTwoAbstainVotesDeniesAccess() throws Exception {
		mgr = new AffirmativeBased(Arrays.<AccessDecisionVoter<? extends Object>> asList(
				deny, abstain, abstain));
		mgr.decide(user, new Object(), attrs);
	}

	@Test(expected = AccessDeniedException.class)
	public void onlyAbstainVotesDeniesAccessWithDefault() throws Exception {
		mgr = new AffirmativeBased(Arrays.<AccessDecisionVoter<? extends Object>> asList(
				abstain, abstain, abstain));
		assertThat(!mgr.isAllowIfAllAbstainDecisions()).isTrue(); // check default

		mgr.decide(user, new Object(), attrs);
	}

	@Test
	public void testThreeAbstainVotesGrantsAccessIfAllowIfAllAbstainDecisionsIsSet()
			throws Exception {
		mgr = new AffirmativeBased(Arrays.<AccessDecisionVoter<? extends Object>> asList(
				abstain, abstain, abstain));
		mgr.setAllowIfAllAbstainDecisions(true);
		assertThat(mgr.isAllowIfAllAbstainDecisions()).isTrue(); // check changed

		mgr.decide(user, new Object(), attrs);
	}
}
