[openstack|identity] Update users collections and model

lib/fog/openstack/models/identity/user.rb

@@ -9,7 +9,7 @@ module Fog
         attribute :email
         attribute :enabled
         attribute :name
-        attribute :tenantId, :aliases => 'tenant_id'
+        attribute :tenant_id, :aliases => 'tenantId'
         attribute :password
 
         attr_accessor :email, :name, :tenant_id, :enabled, :password

lib/fog/openstack/models/identity/users.rb

@@ -10,6 +10,17 @@ module Fog
         def all
           load(connection.list_users.body['users'])
         end
+
+        def find_by_id(id)
+          self.find {|user| user.id == id} ||
+            Fog::Identity::OpenStack::User.new(
+              connection.get_user_by_id(id).body['user'])
+        end
+
+        def destroy(id)
+          user = self.find_by_id(id)
+          user.destroy
+        end
       end # class Users
     end # class OpenStack
   end # module Identity

tests/openstack/models/identity/users_tests.rb

@@ -0,0 +1,33 @@
+Shindo.tests("Fog::Identity[:openstack] | users", ['openstack']) do
+  tenant_id = Fog::Identity[:openstack].list_tenants.body['tenants'].first['id']
+  @instance = Fog::Identity[:openstack].users.create({
+    :name      => 'foobar',
+    :email     => 'foo@bar.com',
+    :tenant_id => tenant_id,
+    :password  => 'spoof',
+    :enabled   => true
+  })
+
+  tests('success') do
+    tests('#find_by_id').succeeds do
+      user = Fog::Identity[:openstack].users.find_by_id(@instance.id)
+      user.id == @instance.id
+    end
+
+    tests('#destroy').succeeds do
+      Fog::Identity[:openstack].users.destroy(@instance.id)
+    end
+  end
+
+  tests('fails') do
+    pending if Fog.mocking?
+
+    tests('#find_by_id').raises(Fog::Identity::OpenStack::NotFound) do
+      Fog::Identity[:openstack].users.find_by_id('fake')
+    end
+
+    tests('#destroy').raises(Fog::Identity::OpenStack::NotFound) do
+      Fog::Identity[:openstack].users.destroy('fake')
+    end
+  end
+end