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require 'abstract_unit'
require 'fixtures/topic'
require 'fixtures/reply'
require 'fixtures/developer'

# The following methods in Topic are used in test_conditional_validation_*
class Topic
  def condition_is_true
    return true
  end

  def condition_is_true_but_its_not
    return false
  end
end

class ValidationsTest < Test::Unit::TestCase
  fixtures :topics, :developers

  def setup
    Topic.write_inheritable_attribute(:validate, nil)
    Topic.write_inheritable_attribute(:validate_on_create, nil)
    Topic.write_inheritable_attribute(:validate_on_update, nil)
  end

  def test_single_field_validation
    r = Reply.new
    r.title = "There's no content!"
    assert !r.save, "A reply without content shouldn't be saveable"

    r.content = "Messa content!"
    assert r.save, "A reply with content should be saveable"
  end

  def test_single_attr_validation_and_error_msg
    r = Reply.new
    r.title = "There's no content!"
    r.save
    assert r.errors.invalid?("content"), "A reply without content should mark that attribute as invalid"
    assert_equal "Empty", r.errors.on("content"), "A reply without content should contain an error"
    assert_equal 1, r.errors.count
  end

  def test_double_attr_validation_and_error_msg
    r = Reply.new
    assert !r.save

    assert r.errors.invalid?("title"), "A reply without title should mark that attribute as invalid"
    assert_equal "Empty", r.errors.on("title"), "A reply without title should contain an error"

    assert r.errors.invalid?("content"), "A reply without content should mark that attribute as invalid"
    assert_equal "Empty", r.errors.on("content"), "A reply without content should contain an error"

    assert_equal 2, r.errors.count
  end

  def test_error_on_create
    r = Reply.new
    r.title = "Wrong Create"
    assert !r.save
    assert r.errors.invalid?("title"), "A reply with a bad title should mark that attribute as invalid"
    assert_equal "is Wrong Create", r.errors.on("title"), "A reply with a bad content should contain an error"
  end

  def test_error_on_update
    r = Reply.new
    r.title = "Bad"
    r.content = "Good"
    assert r.save, "First save should be successful"

    r.title = "Wrong Update"
    assert !r.save, "Second save should fail"

    assert r.errors.invalid?("title"), "A reply with a bad title should mark that attribute as invalid"
    assert_equal "is Wrong Update", r.errors.on("title"), "A reply with a bad content should contain an error"
  end

  def test_invalid_record_exception
    assert_raises(ActiveRecord::RecordInvalid) { Reply.create! }
    assert_raises(ActiveRecord::RecordInvalid) { Reply.new.save! }

    begin
      r = Reply.new
      r.save!
      flunk
    rescue ActiveRecord::RecordInvalid => invalid
      assert_equal r, invalid.record
    end
  end

  def test_single_error_per_attr_iteration
    r = Reply.new
    r.save

    errors = []
    r.errors.each { |attr, msg| errors << [attr, msg] }

    assert errors.include?(["title", "Empty"])
    assert errors.include?(["content", "Empty"])
  end

  def test_multiple_errors_per_attr_iteration_with_full_error_composition
    r = Reply.new
    r.title   = "Wrong Create"
    r.content = "Mismatch"
    r.save

    errors = []
    r.errors.each_full { |error| errors << error }

    assert_equal "Title is Wrong Create", errors[0]
    assert_equal "Title is Content Mismatch", errors[1]
    assert_equal 2, r.errors.count
  end

  def test_errors_on_base
    r = Reply.new
    r.content = "Mismatch"
    r.save
    r.errors.add_to_base "Reply is not dignifying"

    errors = []
    r.errors.each_full { |error| errors << error }

    assert_equal "Reply is not dignifying", r.errors.on_base

    assert errors.include?("Title Empty")
    assert errors.include?("Reply is not dignifying")
    assert_equal 2, r.errors.count
  end

  def test_create_without_validation
    reply = Reply.new
    assert !reply.save
    assert reply.save(false)
  end

  def test_validates_each
    perform = true
    hits = 0
    Topic.validates_each(:title, :content, [:title, :content]) do |record, attr|
      if perform
        record.errors.add attr, 'gotcha'
        hits += 1
      end
    end
    t = Topic.new("title" => "valid", "content" => "whatever")
    assert !t.save
    assert_equal 4, hits
    assert_equal %w(gotcha gotcha), t.errors.on(:title)
    assert_equal %w(gotcha gotcha), t.errors.on(:content)
  ensure
    perform = false
  end

  def test_errors_on_boundary_breaking
    developer = Developer.new("name" => "xs")
    assert !developer.save
    assert_equal "is too short (min is 3 characters)", developer.errors.on("name")

    developer.name = "All too very long for this boundary, it really is"
    assert !developer.save
    assert_equal "is too long (max is 20 characters)", developer.errors.on("name")

    developer.name = "Just right"
    assert developer.save
  end

  def test_title_confirmation_no_confirm
    Topic.validates_confirmation_of(:title)

    t = Topic.create("title" => "We should not be confirmed")
    assert t.save
  end

  def test_title_confirmation
    Topic.validates_confirmation_of(:title)

    t = Topic.create("title" => "We should be confirmed","title_confirmation" => "")
    assert !t.save

    t.title_confirmation = "We should be confirmed"
    assert t.save
  end

  def test_terms_of_service_agreement_no_acceptance
    Topic.validates_acceptance_of(:terms_of_service, :on => :create)

    t = Topic.create("title" => "We should not be confirmed")
    assert t.save
  end

  def test_terms_of_service_agreement
    Topic.validates_acceptance_of(:terms_of_service, :on => :create)

    t = Topic.create("title" => "We should be confirmed","terms_of_service" => "")
    assert !t.save
    assert_equal "must be accepted", t.errors.on(:terms_of_service)

    t.terms_of_service = "1"
    assert t.save
  end


  def test_eula
    Topic.validates_acceptance_of(:eula, :message => "must be abided", :on => :create)

    t = Topic.create("title" => "We should be confirmed","eula" => "")
    assert !t.save
    assert_equal "must be abided", t.errors.on(:eula)

    t.eula = "1"
    assert t.save
  end

  def test_terms_of_service_agreement_with_accept_value
    Topic.validates_acceptance_of(:terms_of_service, :on => :create, :accept => "I agree.")

    t = Topic.create("title" => "We should be confirmed", "terms_of_service" => "")
    assert !t.save
    assert_equal "must be accepted", t.errors.on(:terms_of_service)

    t.terms_of_service = "I agree."
    assert t.save
  end

  def test_validate_presences
    Topic.validates_presence_of(:title, :content)

    t = Topic.create
    assert !t.save
    assert_equal "can't be blank", t.errors.on(:title)
    assert_equal "can't be blank", t.errors.on(:content)

    t.title = "something"
    t.content  = "   "

    assert !t.save
    assert_equal "can't be blank", t.errors.on(:content)

    t.content = "like stuff"

    assert t.save
  end

  def test_validate_uniqueness
    Topic.validates_uniqueness_of(:title)

    t = Topic.new("title" => "I'm unique!")
    assert t.save, "Should save t as unique"

    t.content = "Remaining unique"
    assert t.save, "Should still save t as unique"

    t2 = Topic.new("title" => "I'm unique!")
    assert !t2.valid?, "Shouldn't be valid"
    assert !t2.save, "Shouldn't save t2 as unique"
    assert_equal "has already been taken", t2.errors.on(:title)

    t2.title = "Now Im really also unique"
    assert t2.save, "Should now save t2 as unique"
  end

  def test_validate_uniqueness_with_scope
    Reply.validates_uniqueness_of(:content, :scope => "parent_id")

    t = Topic.create("title" => "I'm unique!")

    r1 = t.replies.create "title" => "r1", "content" => "hello world"
    assert r1.valid?, "Saving r1"

    r2 = t.replies.create "title" => "r2", "content" => "hello world"
    assert !r2.valid?, "Saving r2 first time"

    r2.content = "something else"
    assert r2.save, "Saving r2 second time"

    t2 = Topic.create("title" => "I'm unique too!")
    r3 = t2.replies.create "title" => "r3", "content" => "hello world"
    assert r3.valid?, "Saving r3"
  end

  def test_validate_format
    Topic.validates_format_of(:title, :content, :with => /^Validation\smacros \w+!$/, :message => "is bad data")

    t = Topic.create("title" => "i'm incorrect", "content" => "Validation macros rule!")
    assert !t.valid?, "Shouldn't be valid"
    assert !t.save, "Shouldn't save because it's invalid"
    assert_equal "is bad data", t.errors.on(:title)
    assert_nil t.errors.on(:content)

    t.title = "Validation macros rule!"

    assert t.save
    assert_nil t.errors.on(:title)

    assert_raise(ArgumentError) { Topic.validates_format_of(:title, :content) }
  end

  def test_validates_inclusion_of
    Topic.validates_inclusion_of( :title, :in => %w( a b c d e f g ) )

    assert !Topic.create("title" => "a!", "content" => "abc").valid?
    assert !Topic.create("title" => "a b", "content" => "abc").valid?
    assert !Topic.create("title" => nil, "content" => "def").valid?

    t = Topic.create("title" => "a", "content" => "I know you are but what am I?")
    assert t.valid?
    t.title = "uhoh"
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "is not included in the list", t.errors["title"]

    assert_raise(ArgumentError) { Topic.validates_inclusion_of( :title, :in => nil ) }
    assert_raise(ArgumentError) { Topic.validates_inclusion_of( :title, :in => 0) }

    assert_nothing_raised(ArgumentError) { Topic.validates_inclusion_of( :title, :in => "hi!" ) }
    assert_nothing_raised(ArgumentError) { Topic.validates_inclusion_of( :title, :in => {} ) }
    assert_nothing_raised(ArgumentError) { Topic.validates_inclusion_of( :title, :in => [] ) }
  end

  def test_validates_inclusion_of_with_allow_nil
    Topic.validates_inclusion_of( :title, :in => %w( a b c d e f g ), :allow_nil=>true )

    assert !Topic.create("title" => "a!", "content" => "abc").valid?
    assert !Topic.create("title" => "", "content" => "abc").valid?
    assert Topic.create("title" => nil, "content" => "abc").valid?
  end

  def test_numericality_with_allow_nil_and_getter_method
    Developer.validates_numericality_of( :salary, :allow_nil => true)
    developer = Developer.new("name" => "michael", "salary" => nil)
    developer.instance_eval("def salary; read_attribute('salary') ? read_attribute('salary') : 100000; end")
    assert developer.valid?
  end

  def test_validates_exclusion_of
    Topic.validates_exclusion_of( :title, :in => %w( abe monkey ) )

    assert Topic.create("title" => "something", "content" => "abc").valid?
    assert !Topic.create("title" => "monkey", "content" => "abc").valid?
  end

  def test_validates_length_of_using_minimum
    Topic.validates_length_of :title, :minimum => 5

    t = Topic.create("title" => "valid", "content" => "whatever")
    assert t.valid?

    t.title = "not"
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "is too short (min is 5 characters)", t.errors["title"]

    t.title = ""
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "is too short (min is 5 characters)", t.errors["title"]

    t.title = nil
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "is too short (min is 5 characters)", t.errors["title"]
  end

  def test_optionally_validates_length_of_using_minimum
    Topic.validates_length_of :title, :minimum => 5, :allow_nil => true

    t = Topic.create("title" => "valid", "content" => "whatever")
    assert t.valid?

    t.title = nil
    assert t.valid?
  end

  def test_validates_length_of_using_maximum
    Topic.validates_length_of :title, :maximum => 5

    t = Topic.create("title" => "valid", "content" => "whatever")
    assert t.valid?

    t.title = "notvalid"
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "is too long (max is 5 characters)", t.errors["title"]

    t.title = ""
    assert t.valid?

    t.title = nil
    assert !t.valid?
  end

  def test_optionally_validates_length_of_using_maximum
    Topic.validates_length_of :title, :maximum => 5, :allow_nil => true

    t = Topic.create("title" => "valid", "content" => "whatever")
    assert t.valid?

    t.title = nil
    assert t.valid?
  end

  def test_validates_length_of_using_within
    Topic.validates_length_of(:title, :content, :within => 3..5)

    t = Topic.new("title" => "a!", "content" => "I'm ooooooooh so very long")
    assert !t.valid?
    assert_equal "is too short (min is 3 characters)", t.errors.on(:title)
    assert_equal "is too long (max is 5 characters)", t.errors.on(:content)

    t.title = nil
    t.content = nil
    assert !t.valid?
    assert_equal "is too short (min is 3 characters)", t.errors.on(:title)
    assert_equal "is too short (min is 3 characters)", t.errors.on(:content)

    t.title = "abe"
    t.content  = "mad"
    assert t.valid?
  end

  def test_optionally_validates_length_of_using_within
    Topic.validates_length_of :title, :content, :within => 3..5, :allow_nil => true

    t = Topic.create('title' => 'abc', 'content' => 'abcd')
    assert t.valid?

    t.title = nil
    assert t.valid?
  end

  def test_optionally_validates_length_of_using_within_on_create
    Topic.validates_length_of :title, :content, :within => 5..10, :on => :create, :too_long => "my string is too long: %d"

    t = Topic.create("title" => "thisisnotvalid", "content" => "whatever")
    assert !t.save
    assert t.errors.on(:title)
    assert_equal "my string is too long: 10", t.errors[:title]

    t.title = "butthisis"
    assert t.save

    t.title = "few"
    assert t.save

    t.content = "andthisislong"
    assert t.save

    t.content = t.title = "iamfine"
    assert t.save
  end

  def test_optionally_validates_length_of_using_within_on_update
    Topic.validates_length_of :title, :content, :within => 5..10, :on => :update, :too_short => "my string is too short: %d"

    t = Topic.create("title" => "vali", "content" => "whatever")
    assert !t.save
    assert t.errors.on(:title)

    t.title = "not"
    assert !t.save
    assert t.errors.on(:title)
    assert_equal "my string is too short: 5", t.errors[:title]

    t.title = "valid"
    t.content = "andthisistoolong"
    assert !t.save
    assert t.errors.on(:content)

    t.content = "iamfine"
    assert t.save
  end

  def test_validates_length_of_using_is
    Topic.validates_length_of :title, :is => 5

    t = Topic.create("title" => "valid", "content" => "whatever")
    assert t.valid?

    t.title = "notvalid"
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "is the wrong length (should be 5 characters)", t.errors["title"]

    t.title = ""
    assert !t.valid?

    t.title = nil
    assert !t.valid?
  end

  def test_optionally_validates_length_of_using_is
    Topic.validates_length_of :title, :is => 5, :allow_nil => true

    t = Topic.create("title" => "valid", "content" => "whatever")
    assert t.valid?

    t.title = nil
    assert t.valid?
  end

  def test_validates_length_of_using_bignum
    bigmin = 2 ** 30
    bigmax = 2 ** 32
    bigrange = bigmin...bigmax
    assert_nothing_raised do
      Topic.validates_length_of :title, :is => bigmin + 5
      Topic.validates_length_of :title, :within => bigrange
      Topic.validates_length_of :title, :in => bigrange
      Topic.validates_length_of :title, :minimum => bigmin
      Topic.validates_length_of :title, :maximum => bigmax
    end
  end

  def test_validates_length_with_globaly_modified_error_message
    ActiveRecord::Errors.default_error_messages[:too_short] = 'tu est trops petit hombre %d'
    Topic.validates_length_of :title, :minimum => 10
    t = Topic.create(:title => 'too short')
    assert !t.valid?

    assert_equal 'tu est trops petit hombre 10', t.errors['title']
  end

  def test_validates_size_of_association
    assert_nothing_raised { Topic.validates_size_of :replies, :minimum => 1 }
    t = Topic.new('title' => 'noreplies', 'content' => 'whatever')
    assert !t.save
    assert t.errors.on(:replies)
    t.replies.create('title' => 'areply', 'content' => 'whateveragain')
    assert t.valid?
  end

  def test_validates_length_of_nasty_params
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :minimum=>6, :maximum=>9) }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>6, :maximum=>9) }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>6, :minimum=>9) }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>6, :is=>9) }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :minimum=>"a") }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :maximum=>"a") }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :within=>"a") }
    assert_raise(ArgumentError) { Topic.validates_length_of(:title, :is=>"a") }
  end

  def test_validates_length_of_custom_errors_for_minimum_with_message
    Topic.validates_length_of( :title, :minimum=>5, :message=>"boo %d" )
    t = Topic.create("title" => "uhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "boo 5", t.errors["title"]
  end

  def test_validates_length_of_custom_errors_for_minimum_with_too_short
    Topic.validates_length_of( :title, :minimum=>5, :too_short=>"hoo %d" )
    t = Topic.create("title" => "uhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "hoo 5", t.errors["title"]
  end

  def test_validates_length_of_custom_errors_for_maximum_with_message
    Topic.validates_length_of( :title, :maximum=>5, :message=>"boo %d" )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "boo 5", t.errors["title"]
  end

  def test_validates_length_of_custom_errors_for_maximum_with_too_long
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d" )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "hoo 5", t.errors["title"]
  end

  def test_validates_length_of_custom_errors_for_is_with_message
    Topic.validates_length_of( :title, :is=>5, :message=>"boo %d" )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "boo 5", t.errors["title"]
  end

  def test_validates_length_of_custom_errors_for_is_with_wrong_length
    Topic.validates_length_of( :title, :is=>5, :wrong_length=>"hoo %d" )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "hoo 5", t.errors["title"]
  end

  def test_validates_associated_many
    Topic.validates_associated( :replies )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    t.replies << [r = Reply.create("title" => "A reply"), r2 = Reply.create("title" => "Another reply")]
    assert !t.valid?
    assert t.errors.on(:replies)
    assert_equal 1, r.errors.count  # make sure all associated objects have been validated
    assert_equal 1, r2.errors.count
    r.content = r2.content = "non-empty"
    assert t.valid?
  end

  def test_validates_associated_one
    Reply.validates_associated( :topic )
    Topic.validates_presence_of( :content )
    r = Reply.create("title" => "A reply", "content" => "with content!")
    r.topic = Topic.create("title" => "uhohuhoh")
    assert !r.valid?
    assert r.errors.on(:topic)
    r.topic.content = "non-empty"
    assert r.valid?
  end

  def test_validate_block
    Topic.validate { |topic| topic.errors.add("title", "will never be valid") }
    t = Topic.create("title" => "Title", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "will never be valid", t.errors["title"]
  end

  def test_invalid_validator
    Topic.validate 3
    assert_raise(ActiveRecord::ActiveRecordError) { t = Topic.create }
  end

  def test_throw_away_typing
    d = Developer.create "name" => "David", "salary" => "100,000"
    assert !d.valid?
    assert_equal 100, d.salary
    assert_equal "100,000", d.salary_before_type_cast
  end

  def test_validates_acceptance_of_with_custom_error_using_quotes
    Developer.validates_acceptance_of :salary, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.salary = "0"
    assert !d.valid?
    assert_equal d.errors.on(:salary).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_confirmation_of_with_custom_error_using_quotes
    Developer.validates_confirmation_of :name, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "John"
    d.name_confirmation = "Johnny"
    assert !d.valid?
    assert_equal d.errors.on(:name), "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_format_of_with_custom_error_using_quotes
    Developer.validates_format_of :name, :with => /^(A-Z*)$/, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "John 32"
    assert !d.valid?
    assert_equal d.errors.on(:name), "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_inclusion_of_with_custom_error_using_quotes
    Developer.validates_inclusion_of :salary, :in => 1000..80000, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.salary = "90,000"
    assert !d.valid?
    assert_equal d.errors.on(:salary).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_length_of_with_custom_too_long_using_quotes
    Developer.validates_length_of :name, :maximum => 4, :too_long=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "Jeffrey"
    assert !d.valid?
    assert_equal d.errors.on(:name).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_length_of_with_custom_too_short_using_quotes
    Developer.validates_length_of :name, :minimum => 4, :too_short=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "Joe"
    assert !d.valid?
    assert_equal d.errors.on(:name).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_length_of_with_custom_message_using_quotes
    Developer.validates_length_of :name, :minimum => 4, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "Joe"
    assert !d.valid?
    assert_equal d.errors.on(:name).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_presence_of_with_custom_message_using_quotes
    Developer.validates_presence_of :non_existent, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "Joe"
    assert !d.valid?
    assert_equal d.errors.on(:non_existent), "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_uniqueness_of_with_custom_message_using_quotes
    Developer.validates_uniqueness_of :name, :message=> "This string contains 'single' and \"double\" quotes"
    d = Developer.new
    d.name = "David"
    assert !d.valid?
    assert_equal d.errors.on(:name).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_validates_associated_with_custom_message_using_quotes
    Reply.validates_associated :topic, :message=> "This string contains 'single' and \"double\" quotes"
    Topic.validates_presence_of :content
    r = Reply.create("title" => "A reply", "content" => "with content!")
    r.topic = Topic.create("title" => "uhohuhoh")
    assert !r.valid?
    assert_equal r.errors.on(:topic).first, "This string contains 'single' and \"double\" quotes"
  end

  def test_conditional_validation_using_method_true
    # When the method returns true
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d", :if => :condition_is_true )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "hoo 5", t.errors["title"]
  end

  def test_conditional_validation_using_method_false
    # When the method returns false
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d", :if => :condition_is_true_but_its_not )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert t.valid?
    assert !t.errors.on(:title)      
  end

  def test_conditional_validation_using_string_true
    # When the evaluated string returns true
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d", :if => "a = 1; a == 1" )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "hoo 5", t.errors["title"]
  end

  def test_conditional_validation_using_string_false
    # When the evaluated string returns false
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d", :if => "false")
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert t.valid?
    assert !t.errors.on(:title)
  end

  def test_conditional_validation_using_block_true
    # When the block returns true
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d",
      :if => Proc.new { |r| r.content.size > 4 } )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert !t.valid?
    assert t.errors.on(:title)
    assert_equal "hoo 5", t.errors["title"]
  end

  def test_conditional_validation_using_block_false
    # When the block returns false
    Topic.validates_length_of( :title, :maximum=>5, :too_long=>"hoo %d",
      :if => Proc.new { |r| r.title != "uhohuhoh"} )
    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
    assert t.valid?
    assert !t.errors.on(:title)
  end

  def test_validates_associated_missing
    Reply.validates_presence_of(:topic)
    r = Reply.create("title" => "A reply", "content" => "with content!")
    assert !r.valid?
    assert r.errors.on(:topic)
    
    r.topic = Topic.find :first
    assert r.valid?
  end
end


class ValidatesNumericalityTest
  NIL = [nil, "", " ", " \t \r \n"]
  FLOAT_STRINGS = %w(0.0 +0.0 -0.0 10.0 10.5 -10.5 -0.0001 -090.1)
  INTEGER_STRINGS = %w(0 +0 -0 10 +10 -10 0090 -090)
  FLOATS = [0.0, 10.0, 10.5, -10.5, -0.0001] + FLOAT_STRINGS
  INTEGERS = [0, 10, -10] + INTEGER_STRINGS
  JUNK = ["not a number", "42 not a number", "0xdeadbeef", "00-1", "--3", "+-3", "+3-1", "-+019.0", "12.12.13.12"]

  def setup
    Topic.write_inheritable_attribute(:validate, nil)
    Topic.write_inheritable_attribute(:validate_on_create, nil)
    Topic.write_inheritable_attribute(:validate_on_update, nil)
  end

  def test_default_validates_numericality_of
    Topic.validates_numericality_of :approved

    invalid!(NIL + JUNK)
    valid!(FLOATS + INTEGERS)
  end

  def test_validates_numericality_of_with_nil_allowed
    Topic.validates_numericality_of :approved, :allow_nil => true

    invalid!(JUNK)
    valid!(NIL + FLOATS + INTEGERS)
  end

  def test_validates_numericality_of_with_integer_only
    Topic.validates_numericality_of :approved, :only_integer => true

    invalid!(NIL + JUNK + FLOATS)
    valid!(INTEGERS)
  end

  def test_validates_numericality_of_with_integer_only_and_nil_allowed
    Topic.validates_numericality_of :approved, :only_integer => true, :allow_nil => true

    invalid!(JUNK + FLOATS)
    valid!(NIL + INTEGERS)
  end

  private
    def invalid!(values)
      values.each do |value|
        topic = Topic.create("title" => "numeric test", "content" => "whatever", "approved" => value)
        assert !topic.valid?, "#{value} not rejected as a number"
        assert topic.errors.on(:approved)
      end
    end

    def valid!(values)
      values.each do |value|
        topic = Topic.create("title" => "numeric test", "content" => "whatever", "approved" => value)
        assert topic.valid?, "#{value} not accepted as a number"
      end
    end
end