Add HTTParty::Error base class. Refs #209.

lib/httparty/exceptions.rb

@@ -1,13 +1,16 @@
 module HTTParty
+  # @abstact Exceptions raised by HTTParty inherit from Error
+  class Error < StandardError; end
+
   # Exception raised when you attempt to set a non-existant format
-  class UnsupportedFormat < StandardError; end
+  class UnsupportedFormat < Error; end
 
   # Exception raised when using a URI scheme other than HTTP or HTTPS
-  class UnsupportedURIScheme < StandardError; end
+  class UnsupportedURIScheme < Error; end
 
   # @abstract Exceptions which inherit from ResponseError contain the Net::HTTP
   # response object accessible via the {#response} method.
-  class ResponseError < StandardError
+  class ResponseError < Error
     # Returns the response of the last request
     # @return [Net::HTTPResponse] A subclass of Net::HTTPResponse, e.g.
     # Net::HTTPOK

spec/httparty/exception_spec.rb

@@ -0,0 +1,23 @@
+require File.expand_path(File.join(File.dirname(__FILE__), '..', 'spec_helper'))
+
+describe HTTParty::Error do
+  subject { described_class }
+
+  its(:ancestors) { should include(StandardError) }
+
+  describe HTTParty::UnsupportedFormat do
+    its(:ancestors) { should include(HTTParty::Error) }
+  end
+
+  describe HTTParty::UnsupportedURIScheme do
+    its(:ancestors) { should include(HTTParty::Error) }
+  end
+
+  describe HTTParty::ResponseError do
+    its(:ancestors) { should include(HTTParty::Error) }
+  end
+
+  describe HTTParty::RedirectionTooDeep do
+    its(:ancestors) { should include(HTTParty::ResponseError) }
+  end
+end