require 'assert'
require 'mr/json_field/record'

require 'ardb/record_spy'
require 'much-plugin'
require 'mr/json_field'
require 'mr/model'

module MR::JsonField::Record

  class UnitTests < Assert::Context
    desc "MR::JsonField::Record"
    subject{ MR::JsonField::Record }

    should "use much-plugin" do
      assert_includes MuchPlugin, subject
    end

  end

  class MixinTests < UnitTests
    desc "when mixed in"
    setup do
      @record_class = Ardb::RecordSpy.new do
        include MR::JsonField::Record
        attr_accessor :hash_data_json, :array_data_json
      end
    end
    subject{ @record_class }

    should "add a before save callback" do
      callback = subject.callbacks.find{ |c| c.type == :before_save }
      assert_equal :json_field_sync_all_json_fields_on_save, callback.args.first
    end

  end

  class InitTests < MixinTests
    desc "and init"
    setup do
      @model_class = Class.new do
        include MR::Model
        field_accessor :hash_data_json, :array_data_json

        include MR::JsonField
        json_field :hash_data
        json_field :array_data
      end
      @record_class.model_class = @model_class

      @record = @record_class.new
      @model  = @record.model
    end
    subject{ @record }

    should "sync all of its json fields on save" do
      @model.hash_data  = { Factory.string => Factory.string }
      @model.array_data = Factory.integer(3).times.map{ Factory.string }

      # since we used the writer the fields and their source should be equal
      assert_equal @model.hash_data,  MR::JsonField.decode(subject.hash_data_json)
      assert_equal @model.array_data, MR::JsonField.decode(subject.array_data_json)

      @model.hash_data[Factory.string] = Factory.string
      @model.array_data << Factory.string
      # since we modified the fields and didn't use the writer, their source
      # should not be equal
      assert_not_equal @model.hash_data,  MR::JsonField.decode(subject.hash_data_json)
      assert_not_equal @model.array_data, MR::JsonField.decode(subject.array_data_json)

      subject.instance_eval{ json_field_sync_all_json_fields_on_save }

      # now that the callback has been run they should be equal once again
      assert_equal @model.hash_data,  MR::JsonField.decode(subject.hash_data_json)
      assert_equal @model.array_data, MR::JsonField.decode(subject.array_data_json)
    end

  end

end