rspec users - Feb 2010 - specing controller post

A bit stuck here being new to ruby and rspec

Im trying to spec out a rails controller and using machinist to
generate a model

so in my spec i have



it "should create new client" do
    // creates me a hash of generated values using Foregey
    client = Client.plan
    // specify that I should be creating a new client with the hash
values from client
    Client.should_receive(:new).with(client)
    //post to the server using my client hash
    post ''create'' , :client => client
end

in my controller

def create
    client = Client.new(params[:client])
end

now this is failing with

Spec::Mocks::MockExpectationError: <Client(id: integer, created_at:
datetime, updated_at: datetime, title: string, lastname: string,
firstname: string, email: string) (class)> received :new with
unexpected arguments
  expected:
({:title=>"Mr", :firstname=>"Ernest",
:lastname=>"Burke", :email=>"rgarrett at
blogtag.info"})
       got: ({"title"=>"Mr",
"lastname"=>"Burke",
"firstname"=>"Ernest",
"email"=>"rgarrett at blogtag.info"})


so why are my hash keys being transformed in string keys instead of
keeping them as symbols, or am I doing this wrong ?

Cheers