require File.join(File.dirname(__FILE__), '..', 'spec_helper.rb')

describe Attributor::DateTime do

  subject(:type) { Attributor::DateTime }

  it 'it is not Dumpable' do
    type.new.is_a?(Attributor::Dumpable).should_not be(true)
  end

  context '.native_type' do
    its(:native_type) { should be(::DateTime) }
  end

  context '.example' do
    its(:example) { should be_a(::DateTime) }
  end

  context '.dump' do
    let(:example) { type.example}
    subject(:value) { type.dump(example) }
    it 'is formatted correctly' do
      value.should match(/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}[\+-]\d{2}:\d{2}/)
    end
    context 'nil values' do
      it 'should be nil' do
        type.dump(nil).should be_nil
      end
    end
  end


  context '.load' do

    it 'returns nil for nil' do
      type.load(nil).should be(nil)
    end

    context 'for incoming objects' do

      it "returns correct DateTime for Time objects" do
        object = Time.now
        loaded = type.load(object)
        loaded.should be_a(::DateTime)
        loaded.to_time.should == object
      end

      it "returns correct DateTime for DateTime objects" do
        object = DateTime.now
        loaded = type.load(object)
        loaded.should be_a(::DateTime)
        loaded.should be( object )
      end

    end

    context 'for incoming strings' do

      [
        '2001-02-03T04:05:06+07:00',
        'Sat, 03 Feb 2001 04:05:06 GMT',
        '20010203T040506+0700',
        '2001-W05-6T04:05:06+07:00',
        'H13.02.03T04:05:06+07:00',
        'Sat, 3 Feb 2001 04:05:06 +0700',
        '2013/08/23 00:39:55 +0000',
        '2007-10-19T04:11:33Z',
        '2001-02-03T04:05:06+07:00.123456', # custom format with microseconds
      ].each do |value|

        it "returns correct DateTime for #{value.inspect}" do
          type.load(value).should == DateTime.parse(value)
        end

      end

      [
        'Sat, 30 Feb 2001 04:05:06 GMT', # No such date exists
        '2013/08/33 00:39:55 +0000',
        '2007-10-33T04:11:33Z',
        '2001-02-33T04:05:06+07:00.123456', # custom format with microseconds
      ].each do |value|

        it "raises Attributor::AttributorException for #{value.inspect}" do
          expect {
            type.load(value)
          }.to raise_error(Attributor::DeserializationError, /Error deserializing a String using DateTime/)
        end

      end

      [
        '',
        'foobar',
        'Sat, 30 Feb 2001 04:05:06 FOOBAR', # No such date format exists
      ].each do |value|

        it "raises Attributor::AttributorException for #{value.inspect}" do
          expect {
            type.load(value)
          }.to raise_error(Attributor::DeserializationError, /Error deserializing a String using DateTime/)
        end

      end

    end

  end

end