Rails - Jun 2008 - How to write test about validates_associated

Here is my model:

class Account < ActiveRecord::Base

  has_many :users, :dependent => :destroy
  has_many :bus
  belongs_to :currency
  has_many :mylogs, :dependent => :destroy
  has_many :batchuserdefines, :dependent => :destroy
  has_many :materialuserdefines, :dependent => :destroy
  has_many :materials
  has_many :inventories
  has_many :batchs
  has_many :courses
  has_many :projects
  has_many :initstocks,:dependent => :destroy
  has_many :vouchertypes, :dependent => :destroy
  has_one :coursecodeformat, :dependent => :destroy

  validates_uniqueness_of :name_native
  validates_uniqueness_of :code
  validates_presence_of  :code
  validates_presence_of  :name_native
  validates_presence_of :email
  validates_presence_of :phone
  validates_associated :currency
  validates_associated :coursecodeformat
  validates_associated :vouchertypes
end

and here is my test:

require File.dirname(__FILE__) + ''/../test_helper''

class AccountTest < Test::Unit::TestCase

  def test_validate_present
    account = Account.new
    assert !account.valid?
    assert account.errors.invalid?(:name_native)
    assert !account.errors.invalid?(:code)
    assert account.errors.invalid?(:email)
    assert account.errors.invalid?(:phone)
    assert account.errors.invalid?(:currency)
    assert account.errors.invalid?(:coursecodeformat)
    assert account.errors.invalid?(:vouchertypes)
  end
end

and the resualt:
test_validate_present(AccountTest) [test/unit/account_test.rb:12]:
(false) is not true.

It looks the test failed at assert account.errors.invalid?(:currency)

I feel puzzle. The model and the test looks simple,why failed
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Michael Gao wrote:
> Here is my model:
> 
> class Account < ActiveRecord::Base
>   belongs_to :currency
>   validates_associated :currency
>   validates_associated :coursecodeformat
>   validates_associated :vouchertypes
> end
> 
> and here is my test:
> 
> require File.dirname(__FILE__) + ''/../test_helper''
> 
> class AccountTest < Test::Unit::TestCase
> 
>   def test_validate_present
>     account = Account.new
>     assert account.errors.invalid?(:currency)
>   end
> end
> 
> and the resualt:
> test_validate_present(AccountTest) [test/unit/account_test.rb:12]:
> (false) is not true.
> 
> It looks the test failed at assert account.errors.invalid?(:currency)
> 
> I feel puzzle. The model and the test looks simple,why failed
I think you mis-understood the docs

http://api.rubyonrails.org/classes/ActiveRecord/Validations/ClassMethods.html#M001055

validates_associated - "Validates whether the associated object or 
objects are all valid themselves"

ie. it doesn''t validate that there is a currency,
it just says something like;

def account.errors.invalid?(:currency)
  if account.currency
    account.currency.invalid?
  else
    return false
  end
end

so at the moment the test would only pass if you did

account = Account.new
account.build_currency(:something => :invalid)
...

think maybe "validates_presence_of :currency" will work for you.
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Ok,it work,thanks
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