Cover the simple_sanitize helper

app/helpers/application_helper.rb

@@ -192,7 +192,7 @@ module ApplicationHelper
               alt: "Sign in with #{provider.to_s.titleize}")
   end
 
-  def simple_sanitize str
+  def simple_sanitize(str)
     sanitize(str, tags: %w(a span))
   end
 

spec/helpers/application_helper_spec.rb

@@ -123,4 +123,21 @@ describe ApplicationHelper do
     end
   end
 
+  describe "simple_sanitize" do
+    let(:a_tag) { '<a href="#">Foo</a>' }
+
+    it "allows the a tag" do
+      simple_sanitize(a_tag).should == a_tag
+    end
+
+    it "allows the span tag" do
+      input = '<span class="foo">Bar</span>'
+      simple_sanitize(input).should == input
+    end
+
+    it "disallows other tags" do
+      input = "<strike><b>#{a_tag}</b></strike>"
+      simple_sanitize(input).should == a_tag
+    end
+  end
 end