Implement Associations::HasOne, HasMany.

lib/cuprum/collections/associations/has_many.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'cuprum/collections/association'
+require 'cuprum/collections/associations'
+
+module Cuprum::Collections::Associations
+  # Object representing a has_many association.
+  class HasMany < Cuprum::Collections::Association
+    # (see Cuprum::Collections::Association#initialize)
+    def initialize(**params)
+      params.delete(:plural)
+      params.delete(:singular)
+
+      super(**params, singular: false)
+    end
+
+    private
+
+    def ignored_parameters
+      @ignored_parameters ||= Set.new(IGNORED_PARAMETERS + %i[singular])
+    end
+  end
+end

lib/cuprum/collections/associations/has_one.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'cuprum/collections/association'
+require 'cuprum/collections/associations'
+
+module Cuprum::Collections::Associations
+  # Object representing a has_one association.
+  class HasOne < Cuprum::Collections::Association
+    # (see Cuprum::Collections::Association#initialize)
+    def initialize(**params)
+      params.delete(:plural)
+      params.delete(:singular)
+
+      super(**params, singular: true)
+    end
+
+    private
+
+    def ignored_parameters
+      @ignored_parameters ||= Set.new(IGNORED_PARAMETERS + %i[singular])
+    end
+  end
+end

spec/cuprum/collections/associations/has_many_spec.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'cuprum/collections/associations/has_many'
+require 'cuprum/collections/rspec/contracts/association_contracts'
+
+require 'support/book'
+require 'support/grimoire'
+require 'support/scoped_book'
+
+RSpec.describe Cuprum::Collections::Associations::HasMany do
+  include Cuprum::Collections::RSpec::Contracts::AssociationContracts
+
+  subject(:association) { described_class.new(**constructor_options) }
+
+  let(:name)                { 'books' }
+  let(:constructor_options) { { name: name } }
+
+  include_contract 'should be a has association'
+
+  describe '#plural?' do
+    it { expect(association.plural?).to be true }
+  end
+
+  describe '#singular?' do
+    it { expect(association.singular?).to be false }
+  end
+end

spec/cuprum/collections/associations/has_one_spec.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require 'cuprum/collections/associations/has_one'
+require 'cuprum/collections/rspec/contracts/association_contracts'
+
+require 'support/book'
+require 'support/grimoire'
+require 'support/scoped_book'
+
+RSpec.describe Cuprum::Collections::Associations::HasOne do
+  include Cuprum::Collections::RSpec::Contracts::AssociationContracts
+
+  subject(:association) { described_class.new(**constructor_options) }
+
+  let(:name)                { 'book' }
+  let(:constructor_options) { { name: name } }
+
+  include_contract 'should be a has association'
+
+  describe '#plural?' do
+    it { expect(association.plural?).to be false }
+  end
+
+  describe '#singular?' do
+    it { expect(association.singular?).to be true }
+  end
+end