Replace method_missing by an overrided inspect

CHANGELOG.md

@@ -42,6 +42,7 @@
 * [#2405](https://github.com/ruby-grape/grape/pull/2405): Fix edge workflow - [@ericproulx](https://github.com/ericproulx).
 * [#2414](https://github.com/ruby-grape/grape/pull/2414): Fix Rack::Lint missing content-type - [@ericproulx](https://github.com/ericproulx).
 * [#2378](https://github.com/ruby-grape/grape/pull/2378): Do not overwrite `route_param` with a regular one if they share same name - [@arg](https://github.com/arg).
+* [#2444](https://github.com/ruby-grape/grape/pull/2444): Replace method_missing in endpoint - [@ericproulx](https://github.com/ericproulx).
 * Your contribution here.
 
 ### 2.0.0 (2023/11/11)

lib/grape/endpoint.rb

@@ -404,12 +404,8 @@ def options?
         env[Rack::REQUEST_METHOD] == Rack::OPTIONS
     end
 
-    def method_missing(name, *_args)
-      raise NoMethodError.new("undefined method `#{name}' for #{self.class} in `#{route.origin}' endpoint")
-    end
-
-    def respond_to_missing?(method_name, include_private = false)
-      super
+    def inspect
+      "#{self.class} in `#{route.origin}' endpoint"
     end
   end
 end

spec/grape/endpoint_spec.rb

@@ -679,15 +679,19 @@ def app
     end
   end
 
-  describe '#method_missing' do
-    context 'when referencing an undefined local variable' do
-      it 'raises NoMethodError but stripping the internals of the Grape::Endpoint class and including the API route' do
-        subject.get('/hey') do
-          undefined_helper
+  describe 'NameError' do
+    context 'when referencing an undefined local variable or method' do
+      let(:error_message) do
+        if Gem::Version.new(RUBY_VERSION).release <= Gem::Version.new('3.2')
+          %r{undefined local variable or method `undefined_helper' for #<Class:0x[0-9a-fA-F]+> in `/hey' endpoint}
+        else
+          /undefined local variable or method `undefined_helper' for/
         end
-        expect do
-          get '/hey'
-        end.to raise_error(NoMethodError, %r{^undefined method `undefined_helper' for #<Class:0x[0-9a-fA-F]+> in `/hey' endpoint})
+      end
+
+      it 'raises NameError but stripping the internals of the Grape::Endpoint class and including the API route' do
+        subject.get('/hey') { undefined_helper }
+        expect { get '/hey' }.to raise_error(NameError, error_message)
       end
     end
   end