```ruby
## ------------------------------------------------------------------- 
## 
## Copyright (c) "2014" Dmitri Zagidulin and Basho Technologies, Inc.
##
## This file is provided to you 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.
##
## -------------------------------------------------------------------

require 'test_helper'

describe "a Riagent::ActiveDocument that persists to RiakJson" do
  it "saves via collection.insert()" do
    user = User.new
    User.collection = MiniTest::Mock.new
    User.collection.expect :insert, nil, [user]
    
    # Calling model.save() should result in a collection.insert() call
    user.save({:validate => false})
    User.collection.verify
  end
end```

Reset the mock object after test
user
```ruby
## ------------------------------------------------------------------- 
## 
## Copyright (c) "2014" Dmitri Zagidulin and Basho Technologies, Inc.
##
## This file is provided to you 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.
##
## -------------------------------------------------------------------

require 'test_helper'

describe "a Riagent::ActiveDocument that persists to RiakJson" do
  it "saves via collection.insert()" do
    user = User.new
    User.collection = MiniTest::Mock.new
    User.collection.expect :insert, nil, [user]
    
    # Calling model.save() should result in a collection.insert() call
    user.save({:validate => false})
    User.collection.verify
    
    # Reset
    User.collection = nil
  end
end```
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