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@@ -1,18 +1,39 @@
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 module Mephisto
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   module SpamDetectionEngines
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     class DefensioEngine < Mephisto::SpamDetectionEngine::Base
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+      def valid?
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+        [:defensio_url, :defensio_key].all? {|key| options.has_key?(key)}
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+      end
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+
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+      def valid_key?
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+      end
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+
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       def ham?(request, comment)
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+        defensio
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       end
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-      def mark_as_ham(comment)
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+      def mark_as_ham(request, comment)
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+        defensio.mark_as_ham(comment)
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       end
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-      def mark_as_spam(comment)
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+      def mark_as_spam(request, comment)
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+        defensio.mark_as_spam(comment)
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       end
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       # The Defensio service supports statistics.
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       def statistics
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       end
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+
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+      protected
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+      def defensio
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+        begin
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+        @defensio ||= Defensio::Client.new(:owner_url => options[:defensio_url], :api_key => options[:defensio_key])
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+        rescue Defensio::InvalidAPIKey
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+          logger.warn { $! }
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+          logger.warn { $!.backtrace.join("\n") }
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+          raise Mephisto::SpamDetectionEngine::NotConfigured
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+        end
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+      end
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     end
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   end
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 end

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@@ -0,0 +1,71 @@
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+require File.dirname(__FILE__) + "/../../../test_helper"
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+context "A properly configured Mephisto::SpamDetectionEngines::DefensioEngine" do
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+  before do
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+    @site = Site.new(:spam_detection_engine => "Mephisto::SpamDetectionEngines::DefensioEngine")
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+    @site.spam_engine_options = {:defensio_url => "http://my.blog.com/", :defensio_key => "akey"}
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+    @site.save(false)
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+    @engine = @site.spam_engine
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+
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+    @request = stub("request", :host_with_port => "")
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+    @comment = Comment.new
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+    @defensio = stub("defensio client")
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+    @site.stub!(:permalink_for).and_return("")
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+  end
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+
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+  specify "should be #valid?" do
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+    assert @engine.valid?
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+  end
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+
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+  specify "should instantiate a Defensio when calling #ham?" do
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+    Defensio::Client.should_receive(:new).and_return(@defensio)
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+    @engine.ham?(@request, @comment)
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+  end
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+end
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+
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+context "A Mephisto::SpamDetectionEngines::DefensioEngine" do
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+  before do
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+    @site = Site.new(:spam_detection_engine => "Mephisto::SpamDetectionEngines::DefensioEngine")
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+    @site.spam_engine_options = {}
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+    @site.save(false)
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+    @engine = @site.spam_engine
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+  end
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+
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+  specify "should not be #valid? when the defensio key is missing from the options" do
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+    @site.spam_engine_options.delete(:defensio_key)
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+    @site.save(false)
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+    assert !@site.spam_engine.valid?
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+  end
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+  
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+  specify "should not be #valid? when the defensio url is missing from the options" do
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+    @site.spam_engine_options.delete(:defensio_url)
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+    @site.save(false)
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+    assert !@site.spam_engine.valid?
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+  end
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+end
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+
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+context "A Mephisto::SpamDetectionEngines::DefensioEngine instantiated from a Site with a missing :defensio_key" do
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+  before do
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+    @site = Site.new(:spam_detection_engine => "Mephisto::SpamDetectionEngines::DefensioEngine")
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+    @site.spam_engine_options = {:defensio_url => "http://my.blog.com/"}
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+    @site.save(false)
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+    @engine = @site.spam_engine
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+  end
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+
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+  specify "should raise a NotConfigured exception when calling #ham?" do
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+    assert_raise Mephisto::SpamDetectionEngine::NotConfigured do
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+      @site.spam_engine.ham?(nil, nil)
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+    end
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+  end
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+
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+  specify "should raise a NotConfigured exception when calling #mark_as_spam" do
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+    assert_raise Mephisto::SpamDetectionEngine::NotConfigured do
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+      @site.spam_engine.mark_as_spam(nil, nil)
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+    end
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+  end
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+
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+  specify "should raise a NotConfigured exception when calling #mark_as_ham" do
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+    assert_raise Mephisto::SpamDetectionEngine::NotConfigured do
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+      @site.spam_engine.mark_as_ham(nil, nil)
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+    end
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+  end
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+end