public function testFindByUsernames()
 {
     $userModel = new User($this->container);
     $projectModel = new Project($this->container);
     $groupModel = new Group($this->container);
     $groupMemberModel = new GroupMember($this->container);
     $groupRoleModel = new ProjectGroupRole($this->container);
     $userRoleModel = new ProjectUserRole($this->container);
     $projectPermissionModel = new ProjectPermission($this->container);
     $this->assertEquals(1, $projectModel->create(array('name' => 'Project 1')));
     $this->assertEquals(2, $userModel->create(array('username' => 'user1')));
     $this->assertEquals(3, $userModel->create(array('username' => 'user2')));
     $this->assertEquals(4, $userModel->create(array('username' => 'user3')));
     $this->assertEquals(1, $groupModel->create('Group A'));
     $this->assertTrue($groupMemberModel->addUser(1, 2));
     $this->assertTrue($groupRoleModel->addGroup(1, 1, Role::PROJECT_MEMBER));
     $this->assertTrue($userRoleModel->addUser(1, 3, Role::PROJECT_MANAGER));
     $this->assertEquals(array('user1', 'user2'), $projectPermissionModel->findUsernames(1, 'us'));
     $this->assertEmpty($projectPermissionModel->findUsernames(1, 'a'));
     $this->assertEmpty($projectPermissionModel->findUsernames(2, 'user'));
 }