Examples of org.osgi.service.useradmin.Group

org.osgi.service.useradmin.Group
A named grouping of roles ( {@code Role} objects).
Whether or not a given {@code Authorization} context implies a {@code Group}object depends on the members of that {@code Group} object.
A {@code Group} object can have two kinds of members: basic andrequired . A {@code Group} object is implied by an{@code Authorization} context if all of its required members are implied andat least one of its basic members is implied.
A {@code Group} object must contain at least one basic member in order to beimplied. In other words, a {@code Group} object without any basic memberroles is never implied by any {@code Authorization} context.
A {@code User} object always implies itself.
No loop detection is performed when adding members to {@code Group} objects,which means that it is possible to create circular implications. Loop detection is instead done when roles are checked. The semantics is that if a role depends on itself (i.e., there is an implication loop), the role is not implied.
The rule that a {@code Group} object must have at least one basic member tobe implied is motivated by the following example:
```
 group foo required members: marketing basic members: alice, bob 
```
Privileged operations that require membership in "foo" can be performed only by "alice" and "bob", who are in marketing.
If "alice" and "bob" ever transfer to a different department, anybody in marketing will be able to assume the "foo" role, which certainly must be prevented. Requiring that "foo" (or any {@code Group} object for that matter)must have at least one basic member accomplishes that.
However, this would make it impossible for a {@code Group} object to beimplied by just its required members. An example where this implication might be useful is the following declaration: "Any citizen who is an adult is allowed to vote." An intuitive configuration of "voter" would be:
```
 group voter required members: citizen, adult basic members: 
```
However, according to the above rule, the "voter" role could never be assumed by anybody, since it lacks any basic members. In order to address this issue a predefined role named "user.anyone" can be specified, which is always implied. The desired implication of the "voter" group can then be achieved by specifying "user.anyone" as its basic member, as follows:
```
 group voter required members: citizen, adult basic members: user.anyone 
```
@noimplement @author $Id: 0ffc7e843ca60afab2965c46dc352af62f540cee $


    /**
     * Tests that adding a basic member to a group-role yields an event. 
     */
    public void testAddBasicGroupMemberYieldsEvent() throws Exception {
        final Group role = (Group) m_repository.addRole("testGroup", Role.GROUP);
        assertNotNull(role);
        
        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                Role anyone = m_repository.getRoleByName(Role.USER_ANYONE);
                assertTrue(role.addMember(anyone));
            };
        }).start();


        assertTrue(m_latch.await(1, TimeUnit.SECONDS));
    }

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    /**
     * Tests that adding a required member to a group-role yields an event. 
     */
    public void testAddRequiredGroupMemberYieldsEvent() throws Exception {
        final Group role = (Group) m_repository.addRole("testGroup", Role.GROUP);
        assertNotNull(role);
        
        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                Role anyone = m_repository.getRoleByName(Role.USER_ANYONE);
                assertTrue(role.addRequiredMember(anyone));
            };
        }).start();


        assertTrue(m_latch.await(100, TimeUnit.SECONDS));
    }

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    /**
     * Tests that removing a member from a group-role yields an event. 
     */
    public void testRemovingGroupMemberYieldsEvent() throws Exception {
        final Role anyone = m_repository.getRoleByName(Role.USER_ANYONE);
        final Group role = (Group) m_repository.addRole("testGroup", Role.GROUP);
        assertNotNull(role);
        role.addRequiredMember(anyone);
        
        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                assertTrue(role.removeMember(anyone));
            };
        }).start();


        assertTrue(m_latch.await(100, TimeUnit.SECONDS));
    }

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    /**
     * Tests whether adding a new role to a group causes an event to be emitted to the {@link RoleRepository}.
     */
    public void testAddBasicRoleYieldsEventOk() throws Exception {
        final Group role = (Group) m_roleRepository.addRole("foo", Role.GROUP);
        
        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                Role anyone = m_roleRepository.getRoleByName(Role.USER_ANYONE);
                role.addMember(anyone);
            };
        }).start();


        assertTrue(m_latch.await(1, TimeUnit.SECONDS));
    }

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    /**
     * Tests whether adding a new role to a group causes an event to be emitted to the {@link RoleRepository}.
     */
    public void testAddRequiredRoleYieldsEventOk() throws Exception {
        final Group role = (Group) m_roleRepository.addRole("foo", Role.GROUP);


        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                Role anyone = m_roleRepository.getRoleByName(Role.USER_ANYONE);
                role.addRequiredMember(anyone);
            };
        }).start();


        assertTrue(m_latch.await(1, TimeUnit.SECONDS));
    }

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    /**
     * Tests whether removing a role from a group causes an event to be emitted to the {@link RoleRepository}.
     */
    public void testRemoveBasicRoleYieldsEventOk() throws Exception {
        final Role anyone = m_roleRepository.getRoleByName(Role.USER_ANYONE);
        final Group role = (Group) m_roleRepository.addRole("bar", Role.GROUP);
        role.addMember(anyone);
        
        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                role.removeMember(anyone);
            };
        }).start();


        assertTrue(m_latch.await(1, TimeUnit.SECONDS));
    }

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    /**
     * Tests whether removing a role from a group causes an event to be emitted to the {@link RoleRepository}.
     */
    public void testRemoveRequiredRoleYieldsEventOk() throws Exception {
        final Role anyone = m_roleRepository.getRoleByName(Role.USER_ANYONE);
        final Group role = (Group) m_roleRepository.addRole("bar", Role.GROUP);
        role.addRequiredMember(anyone);
        
        m_latch = new CountDownLatch(1);
        
        new Thread(new Runnable() {
            public void run() {
                role.removeMember(anyone);
            };
        }).start();


        assertTrue(m_latch.await(1, TimeUnit.SECONDS));
    }

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    /**
     * Tests that adding a basic member to a group works.
     */
    public void testAddGroupMemberOk() {
        User user1 = (User) m_userAdmin.createRole("user1", Role.USER);
        Group group1 = (Group) m_userAdmin.createRole("group1", Role.GROUP);
        
        assertTrue(group1.addMember(user1));
        assertFalse(group1.addMember(user1));
    }

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    /**
     * Tests that adding a required member to a group works.
     */
    public void testAddRequiredGroupMemberOk() {
        User user1 = (User) m_userAdmin.createRole("user1", Role.USER);
        Group group1 = (Group) m_userAdmin.createRole("group1", Role.GROUP);
        
        assertTrue(group1.addRequiredMember(user1));
        assertFalse(group1.addRequiredMember(user1));
    }

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    public void testBasicGroupMembershipOk() {
        User user1 = (User) m_userAdmin.createRole("user1", Role.USER);
        User user2 = (User) m_userAdmin.createRole("user2", Role.USER);
        User user3 = (User) m_userAdmin.createRole("user3", Role.USER);


        Group reqGroup = (Group) m_userAdmin.createRole("reqGroup", Role.GROUP);
        reqGroup.addMember(user1);
        reqGroup.addMember(user2);
        reqGroup.addMember(user3);
        
        Group group = (Group) m_userAdmin.createRole("group", Role.GROUP);
        group.addRequiredMember(reqGroup);
        group.addMember(user1);
        group.addMember(user2);


        Authorization auth = m_userAdmin.getAuthorization(user1);
        assertTrue(auth.hasRole("group"));
        
        auth = m_userAdmin.getAuthorization(user2);

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