Spec exercising date/time usage with the API

api_datetime_spec.rb

# Requirements for this shared example:
# - api_key:  ApiKey class instance used for authentication.
# - factory:  Name of FactoryGirl factory as a symbol.
# - deps:     Hash of dependencies to pass into FactoryGirl.create.
# - params:   Parameters to fulfill #index request.
#
# collection: Name to inspect in the resultset.
#             See: https://api.unbounce.com/doc/pages#collection_overview
#             In the sample responses there, `collection` should be 'pages'.
#
shared_examples_for 'resource_date_filter' do |collection|

  let(:prior) { create(factory, deps) }
  let(:gmt_resource) { create(factory, deps) }
  let(:middle) { create(factory, deps) }
  let(:pst_resource) { create(factory, deps) }
  let(:after) { create(factory, deps) }

  let(:gmt_datetime) { DateTime.now.change(offset: "+0000") }
  let(:pst_datetime) { gmt_datetime.change(offset: "-0800") }

  describe '#index' do

    before do
      FormSubmission.destroy_all
      gmt_resource.update_column(:created_at, gmt_datetime)
      gmt_resource.update_column(:form_data, '{"name":["gmt datetime"]}')
      pst_resource.update_column(:created_at, pst_datetime)
      pst_resource.update_column(:form_data, '{"name":["pst datetime"]}')
      prior.update_column(:created_at, gmt_datetime - 4.hours)
      middle.update_column(:created_at, gmt_datetime + 4.hours)
      after.update_column(:created_at, pst_datetime + 4.hours)

      basic_auth(api_key.key, '')
      request.env['HTTP_ACCEPT'] = 'application/json'
    end

    subject { ActiveSupport::JSON.decode(response.body)[collection] }

    context 'requesting all resources up to gmt' do
      before { get :index, params.merge(to: gmt_datetime.rfc3339) }
      specify { subject.each { |res| DateTime.rfc3339(res['createdAt']).should < gmt_datetime } }
      its(:count) { should == 1 }
    end

    context 'requesting all resources since gmt' do
      before { get :index, params.merge(from: gmt_datetime.rfc3339) }
      specify { subject.each { |res| DateTime.rfc3339(res['createdAt']).should > gmt_datetime } }
      its(:count) { should == 3 }
    end

    context 'requesting all resources up to pst' do
      before { get :index, params.merge(to: pst_datetime.rfc3339) }
      specify { subject.each { |res| DateTime.rfc3339(res['createdAt']).should < pst_datetime } }
      its(:count) { should == 3 }
    end

    context 'requesting all resources since pst' do
      before { get :index, params.merge(from: pst_datetime.rfc3339) }
      specify { subject.each { |res| DateTime.rfc3339(res['createdAt']).should > pst_datetime } }
      its(:count) { should == 1 }
    end


    # When I use GMT, I should get leads only newer than GMT.
    #  -> Currently don't, by a few hours.
    # When I use PST, I should get leads only new than PST.
    #  -> This already *does* work.
  end

end