Merge pull request #224 from EasyPost/concatenate_error_message

fix: concatenates error.message if it is an array

Author: Justintime50

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## NEXT RELEASE
 
+- Concatenates `error.message` if it incorrectly comes back from the API as an array
 - Treats any HTTP status outside the `2xx` range as an error. Impact expected is minimal as this change only affects `1xx` and `3xx` HTTP status codes
 
 ## v4.8.0 (2022-09-21)

lib/easypost/error.rb

@@ -6,7 +6,8 @@ class EasyPost::Error < StandardError
 
   # Initialize a new EasyPost Error
   def initialize(message = nil, status = nil, code = nil, errors = nil, http_body = nil)
-    @message = message
+    # message should be a string but can sometimes incorrectly come back as an array
+    @message = message.is_a?(Array) ? message.join(', ') : message
     @status = status
     @code = code
     @errors = errors

spec/error_spec.rb

@@ -27,5 +27,11 @@
       # Compare an error and its properties to another error
       expect(e).to eq(e.clone)
     end
+
+    it 'concatenates error.message when it comes back incorrectly as an array from the API' do
+      error = described_class.new(%w[Error1 Error2])
+
+      expect(error.message).to eq('Error1, Error2')
+    end
   end
 end