Added error class per code review

lib/hydra/derivatives/processors/active_encode.rb

@@ -1,27 +1,24 @@
 require 'active_encode'
 
 module Hydra::Derivatives::Processors
+  class ActiveEncodeError < StandardError
+    def initialize(status, source_path, errors = [])
+      msg = "ActiveEncode status was \"#{status}\" for #{source_path}"
+      msg = "#{msg}: #{errors.join(' ; ')}" unless errors.empty?
+      super(msg)
+    end
+  end
+
   class ActiveEncode < Processor
     def process
       encode = ::ActiveEncode::Base.create(source_path, directives)
 
       # Wait until the encoding job is finished
       # while(encode.reload.running?) { sleep 10 }
 
-      raise_exception_if_encoding_failed(encode)
-      raise_exception_if_encoding_cancelled(encode)
+      raise ActiveEncodeError.new(encode.state, source_path, encode.errors) unless encode.completed?
 
       # TODO: call output_file_service with the output url
     end
-
-    def raise_exception_if_encoding_failed(encode)
-      return unless encode.failed?
-      raise StandardError.new("Encoding failed for #{source_path}: #{encode.errors.join(' ; ')}")
-    end
-
-    def raise_exception_if_encoding_cancelled(encode)
-      return unless encode.cancelled?
-      raise StandardError.new("Encoding cancelled for #{source_path}")
-    end
   end
 end

spec/processors/active_encode_spec.rb

@@ -15,10 +15,12 @@
     # encode finished and returned a certain status.
     let(:failed_status) { false }
     let(:cancelled_status) { false }
+    let(:completed_status) { false }
     let(:errors) { [] }
     let(:encode_double) do
       double('encode double',
              reload: self, state: state, errors: errors,
+             :completed? => completed_status,
              :failed? => failed_status,
              :cancelled? => cancelled_status)
     end
@@ -33,7 +35,7 @@
       end
 
       it 'raises an exception' do
-        expect { subject }.to raise_error("Encoding failed for #{file_path}: error 1 ; error 2")
+        expect { subject }.to raise_error(Hydra::Derivatives::Processors::ActiveEncodeError, "ActiveEncode status was \"failed\" for #{file_path}: error 1 ; error 2")
       end
     end
 
@@ -46,7 +48,7 @@
       end
 
       it 'raises an exception' do
-        expect { subject }.to raise_error("Encoding cancelled for #{file_path}")
+        expect { subject }.to raise_error(Hydra::Derivatives::Processors::ActiveEncodeError, "ActiveEncode status was \"cancelled\" for #{file_path}")
       end
     end
   end