Module: Cuprum::Collections::RSpec::Contracts::CommandContracts::ShouldBeAnInsertOneCommandContract

Extended by:
RSpec::SleepingKingStudios::Contract
Defined in:
lib/cuprum/collections/rspec/contracts/command_contracts.rb

Overview

Contract validating the behavior of an InsertOne command implementation.

Instance Method Summary collapse

Instance Method Details

#apply(example_group) ⇒ Object

Adds the contract to the example group.

Parameters:

  • example_group (RSpec::Core::ExampleGroup) —

    the example group to which the contract is applied.



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# File 'lib/cuprum/collections/rspec/contracts/command_contracts.rb', line 1191

contract do
  describe '#call' do
    let(:matching_data) { attributes }
    let(:expected_data) do
      defined?(super()) ? super() : matching_data
    end
    let(:primary_key_name) do
      defined?(super()) ? super() : 'id'
    end
    let(:primary_key_type) do
      defined?(super()) ? super() : Integer
    end
    let(:scoped) do
      key    = primary_key_name
      value  = entity[primary_key_name.to_s]

      query.where { { key => value } }
    end

    it 'should validate the :entity keyword' do
      expect(command)
        .to validate_parameter(:call, :entity)
        .using_constraint(entity_type)
    end

    context 'when the item does not exist in the collection' do
      it 'should return a passing result' do
        expect(command.call(entity: entity))
          .to be_a_passing_result
          .with_value(be == expected_data)
      end

      it 'should append an item to the collection' do
        expect { command.call(entity: entity) }
          .to(
            change { query.reset.count }
            .by(1)
          )
      end

      it 'should add the entity to the collection' do
        expect { command.call(entity: entity) }
          .to change(scoped, :exists?)
          .to be true
      end

      it 'should set the attributes' do
        command.call(entity: entity)

        expect(scoped.to_a.first).to be == expected_data
      end
    end

    context 'when the item exists in the collection' do
      let(:data) { fixtures_data }
      let(:expected_error) do
        Cuprum::Collections::Errors::AlreadyExists.new(
          attribute_name:  primary_key_name,
          attribute_value: attributes.fetch(
            primary_key_name.to_s,
            attributes[primary_key_name.intern]
          ),
          collection_name: collection_name,
          primary_key:     true
        )
      end

      it 'should return a failing result' do
        expect(command.call(entity: entity))
          .to be_a_failing_result
          .with_error(expected_error)
      end

      it 'should not append an item to the collection' do
        expect { command.call(entity: entity) }
          .not_to(change { query.reset.count })
      end
    end
  end
end