diff --git a/spec/lib/common/models/wp_timthumb_spec.rb b/spec/lib/common/models/wp_timthumb_spec.rb
index 534cb310..34aad56a 100644
--- a/spec/lib/common/models/wp_timthumb_spec.rb
+++ b/spec/lib/common/models/wp_timthumb_spec.rb
@@ -10,4 +10,22 @@ describe WpTimthumb do
   let(:uri)             { URI.parse('http://example.com/') }
   let(:options)         { { path: 'path-to/a/timtuhumb.php' } }
 
+  describe '#==' do
+    context 'when both url are equal' do
+      it 'returns true' do
+        WpTimthumb.new(uri, path: 'timtuhumb.php').
+        should ==
+        WpTimthumb.new(uri, path: 'timtuhumb.php')
+      end
+    end
+
+    context 'when urls are different' do
+      it 'returns false' do
+        WpTimthumb.new(uri, path: 'hello/timtuhumb.php').
+        should_not ==
+        WpTimthumb.new(uri, path: 'some-dir/timtuhumb.php')
+      end
+    end
+  end
+
 end