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@@ -78,6 +78,15 @@ describe Merb::AbstractController, " should support before and after filters" do
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     running { dispatch_should_make_body("TestConditionalFilterWithNoProcOrSymbol", "") }.should raise_error(ArgumentError, /a Symbol or a Proc/)
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   end
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+  it "should throw an error if an unknown option is passed to a filter" do
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+    running { Merb::Test::Fixtures::Abstract.class_eval do
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+        
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+      class TestErrorFilter < Merb::Test::Fixtures::Abstract::Testing
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+        before :foo, :except => :index
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+      end 
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+    end }.should raise_error(ArgumentError, /known filter options/)
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+  end
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+  
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   it "should support passing an argument to a before filter method" do
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     dispatch_should_make_body("TestBeforeFilterWithArgument", "index action")
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   end