Add a spec to test caching of Formtastic::Localizer

spec/localizer_spec.rb

@@ -0,0 +1,108 @@
+# encoding: utf-8
+require 'spec_helper'
+
+describe 'Formtastic::Localizer' do
+  describe "Cache" do
+    before do
+      @cache = Formtastic::Localizer::Cache.new
+      @key = ['model', 'name']
+      @undefined_key = ['model', 'undefined']
+      @cache.set(@key, 'value')
+    end
+
+    it "should get value" do
+      @cache.get(@key).should == 'value'
+      @cache.get(@undefined_key).should be_nil
+    end
+
+    it "should check if key exists?" do
+      @cache.has_key?(@key).should be_true
+      @cache.has_key?(@undefined_key).should be_false
+    end
+
+    it "should set a key" do
+      @cache.set(['model', 'name2'], 'value2')
+      @cache.get(['model', 'name2']).should == 'value2'
+    end
+
+    it "should return hash" do
+      @cache.cache.should be_an_instance_of(Hash)
+    end
+
+    it "should clear the cache" do
+      @cache.clear!
+      @cache.get(@key).should be_nil
+    end
+  end
+
+  describe "Localizer" do
+    include FormtasticSpecHelper      
+
+    before do
+      mock_everything    
+
+      with_config :i18n_lookups_by_default, true do
+        semantic_form_for(@new_post) do |builder|
+          @localizer = Formtastic::Localizer.new(builder)
+        end
+      end
+    end
+
+    after do
+      ::I18n.backend.reload!
+    end
+
+    it "should be defined" do
+      lambda { Formtastic::Localizer }.should_not raise_error(::NameError)
+    end
+
+    it "should have a cache" do
+      Formtastic::Localizer.cache.should be_an_instance_of(Formtastic::Localizer::Cache)
+    end
+
+    describe "localize" do
+      def store_post_translations(value)
+        ::I18n.backend.store_translations :en, {:formtastic => {
+            :labels => {
+              :post => { :name => value }
+            }
+          }
+        }        
+      end
+
+      before do
+        store_post_translations('POST.NAME')
+      end
+
+      it "should translate key with i18n" do
+        @localizer.localize(:name, :name, :label).should == 'POST.NAME'
+      end
+
+      describe "with caching" do
+        it "should not update translation when stored translations change" do
+          with_config :i18n_cache_lookups, true do
+            @localizer.localize(:name, :name, :label).should == 'POST.NAME'
+            store_post_translations('POST.NEW_NAME')
+
+            @localizer.localize(:name, :name, :label).should == 'POST.NAME'       
+
+            Formtastic::Localizer.cache.clear!
+            @localizer.localize(:name, :name, :label).should == 'POST.NEW_NAME'                  
+          end
+        end        
+      end
+
+      describe "without caching" do
+        it "should update translation when stored translations change" do
+          with_config :i18n_cache_lookups, false do
+            @localizer.localize(:name, :name, :label).should == 'POST.NAME'
+            store_post_translations('POST.NEW_NAME')
+            @localizer.localize(:name, :name, :label).should == 'POST.NEW_NAME'            
+          end
+        end
+      end
+    end
+
+  end
+
+end