require 'teststrap'

context "validates exclusion" do

  should "add a validation macro" do
    WhyValidationsSuckIn96::ValidationBuilder.instance_methods
  end.includes('validates_exclusion_of')

  should "raise if an :in option is not given" do
      WhyValidationsSuckIn96::ValidatesExclusion.new(Object.new, :attribute => :colour)
  end.raises(ArgumentError, "Collection to check for exclusion against should be specified with :in")

  context "with some default options" do
    setup do
      WhyValidationsSuckIn96::ValidatesExclusion.new(Object.new, :attribute => :colour, :in => %w[1 2 3])
    end

    should "have a message accessor with a default message" do
      topic.message
    end.equals("is in the excluded collection")
  end # with some default options

  context "validating an object" do

    should "fail if the attribute is in the excluded set" do
      validation = WhyValidationsSuckIn96::ValidatesExclusion.new(OpenStruct.new(:colour => "red"), :attribute => :colour,
                                                                  :in => %w[red blue])
      validation.validates?
    end.equals(false)

    should "pass if the attribute is out of the excluded set" do
      validation = WhyValidationsSuckIn96::ValidatesExclusion.new(OpenStruct.new(:colour => "red"), :attribute => :colour,
                                                                  :in => %w[green blue])
      validation.validates?
    end
  end   # validating an object

  context "validating an object with the :set option given" do

    should "fail if any of the attributes are in the given set" do
      validation = WhyValidationsSuckIn96::ValidatesExclusion.new(OpenStruct.new(:colours => %w[red blue yellow]),
                                                                  :attribute => :colours,
                                                                  :set => true,
                                                                  :in => %w[blue green])
      validation.validates?
    end.equals(false)

    should "pass if all the attributes are not in the given set" do
      validation = WhyValidationsSuckIn96::ValidatesExclusion.new(OpenStruct.new(:colours => %w[yellow purple]),
                                                                  :attribute => :colours,
                                                                  :set => true,
                                                                  :in => %w[red green blue])
      validation.validates?
    end
  end   # validating an object

end     # validates exclusion