require 'spec_helper'

describe Hashme::Properties do
  
  before :all do
    @aux_model = Class.new do
      include Hashme
      property :age, Fixnum
    end
    Kernel.const_set("Aux", @aux_model)
  end

  let :model do
    Class.new do
      include Hashme
      property :name, String
    end
  end

  let :obj do
    model.new
  end

  describe "#get_attribute" do
    it "should provide object in model" do
      obj[:key1] = 'value'
      expect(obj.get_attribute(:key1)).to eql('value')
    end
  end

  describe "#set_attribute" do
    it "should NOT be posible to set attribute not defined as property" do
      obj.set_attribute('key1', 'value1')
      obj.set_attribute(:key2, 'value2')
      expect(obj[:key1]).to be_nil
      expect(obj[:key2]).to be_nil
    end

    it "should set and cast attribute with property" do
      property = model.send(:properties)[:name]
      name = "Fred Flinstone"
      expect(property).to receive(:build).with(obj, name).and_return(name)
      obj.set_attribute(:name, name)
      expect(obj[:name]).to eql(name)
    end

    it "should delete attribute set to nil" do
      obj.name = "test"
      expect(obj.name).to eql("test")
      obj.name = nil
      expect(obj.name).to be_nil
      expect(obj.keys.map(&:to_s)).to_not include('name')
    end
  end

  describe "#attribtues=" do
    it "should set attributes on the model" do
      expect(obj.name).to be_nil
      obj.attributes = { name: 'Sam' }
      expect(obj.name).to eql("Sam")
    end
  end

  describe ".properties" do

    it "should be instantiated after property set" do
      expect(model.properties).to_not be_nil
      expect(model.properties.class).to eql(Hash)
    end

    it "should be empty if no properties" do
      mod = Class.new do
        include Hashme
      end
      expect(mod.properties).to be_empty
    end

    it "should be inherited from parent models" do
      mod = Class.new(model) do
        property :surname, String
      end
      expect(mod.properties.keys).to include(:name)
      expect(mod.properties.keys).to include(:surname)
      # Make sure we don't update the parent!
      expect(model.properties.keys).to_not include(:surname)
    end

  end

  describe ".property" do

    it "should fail if no type is defined" do
      expect(model.properties.length).to eql(1)
      expect {
        model.property :foobar
      }.to raise_error(ArgumentError)
      expect(model.properties.length).to eql(1)
    end

    it "should create a new property with helper methods" do
      expect(model.properties.length).to eql(1)
      model.property :desc, String
      expect(model.properties.length).to eql(2)

      prop = model.properties[:desc]
      expect(prop.class).to eql(Hashme::Property)

      expect(obj).to respond_to(:desc)
      expect(obj).to respond_to(:desc=)

      obj.desc = "test"
      expect(obj.desc).to eql("test")
    end
    
    it "should return nil on property with no default" do
      model.property :nickname, String
      expect(obj.nickname).to be_nil
    end

    it "should create helper method with support for default values" do
      model.property :name, String, :default => "Sam"
      expect(obj.name).to eql("Sam")
    end

  end

end