TypeError while doing tests

Rails
1

I have a problem testing an invalid situation, the valid situation
without merging params (or merging valid ones) works fine.

Controller:

@user is setted with a filter

def update
if @user.update_attributes(params[:user])
redirect_to(user_path(@user))
else
render :action => :show
end
end

Test:

def test_should_not_update_user
# Set session values
session_company :one
login_as :emilio
# I choose a name that invalid (is too short)
update_user(:name => ‘s’)
assert !users(:emilio).errors.empty?,
users(:emilio).errors.full_messages
assert_response :success
end

protected
def update_user(options = {})
put :update, :user => { :name => ‘Testing name’, :street => ‘test
street’,
:city => ‘Testing City’, :zipcode =>
‘556678’,
:state => ‘Testing State’, :country =>
‘Argentina’,
:password_actual => ‘test’,
:password => ‘testing’,
:password_confirmation => ‘testing’ }.merge(options)
end

Test Output:
Started
E…
Finished in 0.214897 seconds.

  1. Error:
    test_should_not_update_user(UsersControllerTest):
    TypeError: can’t convert nil into String

…

Why i get an error on invalid name if the controller just render the
same page passing user errors…

Thanks in advance!