Renamed ValidatorsCache to ValidatorsRegistry

lib/grape/validations.rb

@@ -5,12 +5,12 @@ module Validations
     module_function
 
     def require_validator(short_name)
-      ValidatorsCache[short_name]
+      ValidatorsRegistry[short_name]
     rescue NameError
       raise Grape::Exceptions::UnknownValidator, short_name
     end
 
-    class ValidatorsCache < Grape::Util::Cache
+    class ValidatorsRegistry < Grape::Util::Cache
       def initialize
         super
         @cache = Hash.new do |h, name|

spec/grape/validations_spec.rb

@@ -2026,5 +2026,21 @@ def validate_param!(attr_name, params)
         expect { subject }.to raise_error(Grape::Exceptions::UnknownValidator)
       end
     end
+
+    context 'when custom' do
+      let(:short_name) { :custom }
+      let(:custom_validator) do
+        Class.new(Grape::Validations::Validators::Base) do
+          def validate_param!(_attr_name, _params)
+          end
+        end
+      end
+
+      before do
+        stub_const('Grape::Validations::Validators::CustomValidator', custom_validator)
+      end
+
+      it { is_expected.to be(Grape::Validations::Validators::CustomValidator) }
+    end
   end
 end