using create instead of build->save->reload

spec/app/models/link_spec.rb

@@ -41,9 +41,8 @@
   end
 
   it "replaces underscores with dashes" do
-    link = FactoryGirl.build(:link, alias: "foo_bar")
-    link.save!
-    link.reload
-    expect(link.alias).to eq "foo-bar"
+    expect(
+      FactoryGirl.create(:link, alias: "foo_bar").alias
+    ).to eq "foo-bar"
   end
 end