Remove Twitter::Error#cause

lib/twitter/error.rb

@@ -3,8 +3,7 @@
 module Twitter
   # Custom error class for rescuing from all Twitter errors
   class Error < StandardError
-    attr_reader :cause, :code, :rate_limit
-    alias_method :wrapped_exception, :cause
+    attr_reader :code, :rate_limit
 
     # If error code is missing see https://dev.twitter.com/docs/error-codes-responses
     module Code
@@ -33,11 +32,11 @@ module Code
     class << self
       # Create a new error from an HTTP response
       #
-      # @param response [Hash]
+      # @param response [Faraday::Response]
       # @return [Twitter::Error]
-      def from_response(response = {})
-        error, code = parse_error(response.body)
-        new(error, response.response_headers, code)
+      def from_response(response)
+        message, code = parse_error(response.body)
+        new(message, response.headers, code)
       end
 
       # @return [Hash]
@@ -83,14 +82,13 @@ def extract_message_from_errors(body)
     # Initializes a new Error object
     #
     # @param exception [Exception, String]
-    # @param response_headers [Hash]
+    # @param rate_limit [Hash]
     # @param code [Integer]
     # @return [Twitter::Error]
-    def initialize(exception = $ERROR_INFO, response_headers = {}, code = nil)
-      @rate_limit = RateLimit.new(response_headers)
-      @cause = exception
+    def initialize(message = '', rate_limit = {}, code = nil)
+      super(message)
+      @rate_limit = Twitter::RateLimit.new(rate_limit)
       @code = code
-      exception.respond_to?(:message) ? super(exception.message) : super(exception.to_s)
     end
 
     class ConfigurationError < ::ArgumentError; end

spec/twitter/error_spec.rb

@@ -20,13 +20,6 @@
     end
   end
 
-  describe '#cause' do
-    it 'returns the cause' do
-      error = Twitter::Error.new(Faraday::Error::ClientError.new('Oops'))
-      expect(error.cause.class).to eq(Faraday::Error::ClientError)
-    end
-  end
-
   Twitter::Error.errors.each do |status, exception|
 
     [nil, 'error', 'errors'].each do |body|