/*
 * 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.intercept.method;

import static org.assertj.core.api.Assertions.*;
import static org.mockito.Mockito.*;

import java.util.*;

import org.aopalliance.intercept.MethodInvocation;
import org.junit.Before;
import org.junit.Test;
import org.springframework.security.ITargetObject;
import org.springframework.security.OtherTargetObject;
import org.springframework.security.TargetObject;
import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.access.intercept.MethodInvocationPrivilegeEvaluator;
import org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor;
import org.springframework.security.access.method.MethodSecurityMetadataSource;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.TestingAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.util.MethodInvocationUtils;

/**
 * Tests
 * {@link org.springframework.security.access.intercept.MethodInvocationPrivilegeEvaluator}
 * .
 *
 * @author Ben Alex
 */
public class MethodInvocationPrivilegeEvaluatorTests {
	private TestingAuthenticationToken token;
	private MethodSecurityInterceptor interceptor;
	private AccessDecisionManager adm;
	private MethodSecurityMetadataSource mds;
	private final List<ConfigAttribute> role = SecurityConfig.createList("ROLE_IGNORED");

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

	@Before
	public final void setUp() throws Exception {
		SecurityContextHolder.clearContext();
		interceptor = new MethodSecurityInterceptor();
		token = new TestingAuthenticationToken("Test", "Password", "ROLE_SOMETHING");
		adm = mock(AccessDecisionManager.class);
		AuthenticationManager authman = mock(AuthenticationManager.class);
		mds = mock(MethodSecurityMetadataSource.class);
		interceptor.setAccessDecisionManager(adm);
		interceptor.setAuthenticationManager(authman);
		interceptor.setSecurityMetadataSource(mds);
	}

	@Test
	public void allowsAccessUsingCreate() throws Exception {
		Object object = new TargetObject();
		final MethodInvocation mi = MethodInvocationUtils.create(object, "makeLowerCase",
				"foobar");

		MethodInvocationPrivilegeEvaluator mipe = new MethodInvocationPrivilegeEvaluator();
		when(mds.getAttributes(mi)).thenReturn(role);

		mipe.setSecurityInterceptor(interceptor);
		mipe.afterPropertiesSet();

		assertThat(mipe.isAllowed(mi, token)).isTrue();
	}

	@Test
	public void allowsAccessUsingCreateFromClass() throws Exception {
		final MethodInvocation mi = MethodInvocationUtils.createFromClass(
				new OtherTargetObject(), ITargetObject.class, "makeLowerCase",
				new Class[] { String.class }, new Object[] { "Hello world" });
		MethodInvocationPrivilegeEvaluator mipe = new MethodInvocationPrivilegeEvaluator();
		mipe.setSecurityInterceptor(interceptor);
		when(mds.getAttributes(mi)).thenReturn(role);

		assertThat(mipe.isAllowed(mi, token)).isTrue();
	}

	@Test
	public void declinesAccessUsingCreate() throws Exception {
		Object object = new TargetObject();
		final MethodInvocation mi = MethodInvocationUtils.create(object, "makeLowerCase",
				"foobar");
		MethodInvocationPrivilegeEvaluator mipe = new MethodInvocationPrivilegeEvaluator();
		mipe.setSecurityInterceptor(interceptor);
		when(mds.getAttributes(mi)).thenReturn(role);
		doThrow(new AccessDeniedException("rejected")).when(adm).decide(token, mi, role);

		assertThat(mipe.isAllowed(mi, token)).isFalse();
	}

	@Test
	public void declinesAccessUsingCreateFromClass() throws Exception {
		final MethodInvocation mi = MethodInvocationUtils.createFromClass(
				new OtherTargetObject(), ITargetObject.class, "makeLowerCase",
				new Class[] { String.class }, new Object[] { "helloWorld" });

		MethodInvocationPrivilegeEvaluator mipe = new MethodInvocationPrivilegeEvaluator();
		mipe.setSecurityInterceptor(interceptor);
		when(mds.getAttributes(mi)).thenReturn(role);
		doThrow(new AccessDeniedException("rejected")).when(adm).decide(token, mi, role);

		assertThat(mipe.isAllowed(mi, token)).isFalse();
	}
}
