Fix exception super (#2276)

* Add super(message) + spec

* Fix rubocop

* Add changelog

* Remove message attr_read

* Add message spec

Author: ericproulx

CHANGELOG.md

@@ -11,6 +11,7 @@
 * [#2267](https://github.com/ruby-grape/grape/pull/2267): Standardized English error messages - [@dblock](https://github.com/dblock).
 * [#2272](https://github.com/ruby-grape/grape/pull/2272): Added error on param init when provided type does not have `[]` coercion method, previously validation silently failed for any value - [@vasfed](https://github.com/Vasfed).
 * [#2274](https://github.com/ruby-grape/grape/pull/2274): Error middleware support using rack util's symbols as status - [@dhruvCW](https://github.com/dhruvCW).
+* [#2276](https://github.com/ruby-grape/grape/pull/2276): Fix exception super - [@ericproulx](https://github.com/ericproulx).
 * Your contribution here.
 
 #### Fixes

lib/grape/exceptions/base.rb

@@ -7,12 +7,12 @@ class Base < StandardError
       BASE_ATTRIBUTES_KEY = 'grape.errors.attributes'
       FALLBACK_LOCALE = :en
 
-      attr_reader :status, :message, :headers
+      attr_reader :status, :headers
 
       def initialize(status: nil, message: nil, headers: nil, **_options)
         @status  = status
-        @message = message
         @headers = headers
+        super(message)
       end
 
       def [](index)

lib/grape/exceptions/validation.rb

@@ -21,10 +21,6 @@ def initialize(params:, message: nil, **args)
       def as_json(*_args)
         to_s
       end
-
-      def to_s
-        message
-      end
     end
   end
 end

spec/grape/exceptions/base_spec.rb

@@ -1,6 +1,22 @@
 # frozen_string_literal: true
 
 describe Grape::Exceptions::Base do
+  describe '#to_s' do
+    subject { described_class.new(message: message).to_s }
+
+    let(:message) { 'a_message' }
+
+    it { is_expected.to eq(message) }
+  end
+
+  describe '#message' do
+    subject { described_class.new(message: message).message }
+
+    let(:message) { 'a_message' }
+
+    it { is_expected.to eq(message) }
+  end
+
   describe '#compose_message' do
     subject { described_class.new.send(:compose_message, key, **attributes) }