// Copyright 2012 Google Inc. All Rights Reserved.
//
// 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.google.enterprise.adaptor;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import java.util.Collections;
import java.util.Set;
import java.util.TreeSet;

/**
 * Test cases for {@link AuthnIdentityImpl}.
 */
public class AuthnIdentityImplTest {
  @Rule
  public ExpectedException thrown = ExpectedException.none();

  @Test
  public void testNullUsername() {
    thrown.expect(NullPointerException.class);
    new AuthnIdentityImpl.Builder(null);
  }

  private static Set<GroupPrincipal> makeGroups(String name) {
    return GroupPrincipal.makeSet(Collections.singleton(name));
  }

  @Test
  public void testSetAllConstruction() {
    AuthnIdentity identity = new AuthnIdentityImpl
        .Builder(new UserPrincipal("testing"))
        .setPassword("pass").setGroups(makeGroups("group"))
        .build();
    assertEquals("testing", identity.getUser().getName());
    assertEquals("pass", identity.getPassword());
    assertEquals(makeGroups("group"), identity.getGroups());
  }

  @Test
  public void testDefaults() {
    AuthnIdentity identity = new AuthnIdentityImpl
        .Builder(new UserPrincipal("testing")).build();
    assertEquals("testing", identity.getUser().getName());
    assertNull(identity.getPassword());
    assertNull(identity.getGroups());
  }

  @Test
  public void testImmutable() {
    Set<GroupPrincipal> groups = new TreeSet<GroupPrincipal>();
    groups.add(new GroupPrincipal("group"));
    Set<GroupPrincipal> groups2 = new TreeSet<GroupPrincipal>();
    groups2.add(new GroupPrincipal("group"));

    AuthnIdentity identity = new AuthnIdentityImpl
        .Builder(new UserPrincipal("testing"))
        .setGroups(groups).build();
    groups.add(new GroupPrincipal("anotherGroup"));
    assertEquals(groups2, identity.getGroups());
  }
}