Contents

require 'spec_helper'

describe Virtus::TypeLookup, '#determine_type' do
  subject { object.determine_type(class_or_name) }

  let!(:object) do
    Class.new do
      extend Virtus::DescendantsTracker
      extend Virtus::TypeLookup
    end
  end

  let!(:default) do
    object.const_set :Object, Class.new(object) {
      def self.primitive() ::Object end
    }
  end

  let!(:descendant) do
    object.const_set :String, Class.new(default) {
      def self.primitive() ::String end
    }
  end

  # add a default subclass to the top of the stack
  let!(:extra) { Class.new(default) }

  # assert the classes are subclassed in a specific order that will trigger
  # the bug that this commit fixes. Do not remove or change the order below.
  it 'has the descendants in the expected order' do
    object.descendants.should == [ extra, descendant, default ]
  end

  context 'with a TypeLookup class' do
    context 'when the argument is a descendant of the object' do
      let(:class_or_name) { descendant }

      it { should equal(descendant) }
    end

    context 'when the argument is the same object' do
      let(:class_or_name) { object }

      it { should be_nil }
    end
  end

  context 'with a class' do
    context 'when the argument is a known primitive' do
      let(:class_or_name) { ::String }

      it { should equal(descendant) }
    end

    context 'when the argument is an unknown class' do
      let(:class_or_name) { Class.new }

      it { should equal(default) }
    end
  end

  context 'with an instance' do
    context 'when the argument is the name of a known constant' do
      let(:class_or_name) { 'String' }

      it { should equal(descendant) }
    end

    context 'when the argument does not stringify to a valid constant name' do
      let(:class_or_name) { Object.new }

      it { should be_nil }
    end

    context 'when the argument is not the name of a known constant' do
      let(:class_or_name) { 'Unknown' }

      it { should be_nil }
    end
  end
end

Version data entries

12 entries across 12 versions & 2 rubygems

Version	Path
fragrant-0.0.5	vendor/bundle/ruby/1.9.1/gems/virtus-0.5.2/spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.5.2	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.5.1	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.5.0	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.4.2	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.4.1	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.4.0	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.3.0	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.2.0	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.1.0	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.0.10	spec/unit/virtus/type_lookup/determine_type_spec.rb
virtus-0.0.9	spec/unit/virtus/type_lookup/determine_type_spec.rb