diff --git a/spec/aggregator_private_spec.rb b/spec/aggregator_private_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..efb078c596c12106a778f5628825b2878a3411af
--- /dev/null
+++ b/spec/aggregator_private_spec.rb
@@ -0,0 +1,41 @@
+require "jsduck/aggregator"
+
+describe JsDuck::Aggregator do
+
+  def parse(string)
+    agr = JsDuck::Aggregator.new
+    agr.parse(string)
+    agr.result
+  end
+
+  shared_examples_for "private" do
+    before do
+      @doc = parse("/**\n * #{@tagname}\n */")[0]
+    end
+
+    it "marks item as private" do
+      @doc[:private].should == true
+    end
+  end
+
+  describe "@private" do
+    before { @tagname = "@private" }
+    it_should_behave_like "private"
+  end
+
+  describe "@hide" do
+    before { @tagname = "@hide" }
+    it_should_behave_like "private"
+  end
+
+  describe "@ignore" do
+    before { @tagname = "@ignore" }
+    it_should_behave_like "private"
+  end
+
+  describe "@protected" do
+    before { @tagname = "@protected" }
+    it_should_behave_like "private"
+  end
+
+end
diff --git a/test/tc_jsduck.rb b/test/tc_jsduck.rb
index dbec9aee4ba2d2573c25a9f417cd92ea9173166a..43417ccfb391d427eaaf0feced84df7a9f6e93d2 100644
--- a/test/tc_jsduck.rb
+++ b/test/tc_jsduck.rb
@@ -25,12 +25,5 @@ class TestJsDuck < Test::Unit::TestCase
     assert_equal("Function", docs[0][:type])
   end
 
-  def test_visibility_modifiers
-    ["@private", "@hide", "@ignore", "@protected"].each do |tagname|
-      docs = JsDuck.parse("/**\n * #{tagname}\n */");
-      assert_equal(true, docs[0][:private])
-    end
-  end
-
 end