test/spec_showexceptions.rb in rack-1.6.10 vs test/spec_showexceptions.rb in rack-1.6.11

@@ -80,6 +80,19 @@
 
     res.should =~ /RuntimeError/
     res.should =~ /ShowExceptions/
     res.should =~ /unknown location/
   end
+
+  it "knows to prefer plaintext for non-html" do
+    # We don't need an app for this
+    exc = Rack::ShowExceptions.new(nil)
+
+    [
+      [{ "HTTP_ACCEPT" => "text/plain" }, true],
+      [{ "HTTP_ACCEPT" => "text/foo" }, true],
+      [{ "HTTP_ACCEPT" => "text/html" }, false]
+    ].each do |env, expected|
+      assert_equal(expected, exc.prefers_plaintext?(env))
+    end
+  end
 end