Adds spec for issue with memoization and dynamic methods

spec/unit/adamantium/dynamic_methods_memoize_spec.rb

@@ -0,0 +1,51 @@
+# encoding: utf-8
+
+require 'spec_helper'
+
+describe Adamantium, 'memoizing methods that initialize objects with dynamically defined methods' do
+  let(:component_class) {
+    Class.new do
+      def initialize(attributes)
+        attributes.each do |key, value|
+          instance_variable_set("@#{key}".to_sym, value)
+          define_singleton_method(key) { instance_variable_get("@#{key}") }
+        end
+      end
+    end
+  }
+
+  context 'a component instance' do
+    subject { component_class.new(test: true) }
+
+    it      { is_expected.to respond_to(:test) }
+    specify { expect(subject.test).to eq true }
+  end
+
+  context 'a composed instance' do
+    before do
+      stub_const('Component', component_class)
+    end
+
+    let(:composed_class) {
+      Class.new do
+        include Adamantium
+
+        def component
+          Component.new(test: true)
+        end
+
+        memoize :component
+      end
+    }
+
+    let(:composed) { composed_class.new }
+
+    context 'its composed' do
+      subject { composed.component }
+
+      it      { is_expected.to be_a component_class }
+      it      { is_expected.to respond_to(:test) }
+      specify { expect(subject.test).to eq true }
+    end
+  end
+end