Raise ActiveResource::ConnectionRefusedError on Errno::ECONNREFUSED

lib/active_resource/connection.rb

@@ -127,6 +127,8 @@ def request(method, path, *arguments)
         raise TimeoutError.new(e.message)
       rescue OpenSSL::SSL::SSLError => e
         raise SSLError.new(e.message)
+      rescue Errno::ECONNREFUSED => e
+        raise ConnectionRefusedError.new(e.message)
       end
 
       # Handles response and error codes from the remote service.

lib/active_resource/exceptions.rb

@@ -35,6 +35,9 @@ def initialize(message)
     def to_s; @message ; end
   end
 
+  # Raised when a Errno::ECONNREFUSED occurs.
+  class ConnectionRefusedError < Errno::ECONNREFUSED; end
+
   # 3xx Redirection
   class Redirection < ConnectionError # :nodoc:
     def to_s

test/cases/connection_test.rb

@@ -282,6 +282,20 @@ def test_ssl_error
     assert_raise(ActiveResource::SSLError) { @conn.get("/people/1.json") }
   end
 
+  def test_handle_econnrefused
+    http = Net::HTTP.new("")
+    @conn.expects(:http).returns(http)
+    http.expects(:get).raises(Errno::ECONNREFUSED, "Failed to open TCP connection")
+    assert_raise(ActiveResource::ConnectionRefusedError) { @conn.get("/people/1.json") }
+  end
+
+  def test_handle_econnrefused_with_backwards_compatible_error
+    http = Net::HTTP.new("")
+    @conn.expects(:http).returns(http)
+    http.expects(:get).raises(Errno::ECONNREFUSED, "Failed to open TCP connection")
+    assert_raise(Errno::ECONNREFUSED) { @conn.get("/people/1.json") }
+  end
+
   def test_auth_type_can_be_string
     @conn.auth_type = "digest"
     assert_equal(:digest, @conn.auth_type)