Don't require ActiveResource tests under Rails 5

spec/support/unit/helpers/active_resource_builder.rb

@@ -1,8 +1,8 @@
-require 'active_resource'
-
 module UnitTests
   module ActiveResourceBuilder
     def self.configure_example_group(example_group)
+      require 'active_resource'
+
       example_group.include ActiveResourceBuilder
 
       example_group.after do

spec/support/unit/helpers/rails_versions.rb

@@ -1,5 +1,7 @@
 module UnitTests
   module RailsVersions
+    extend self
+
     def self.configure_example_group(example_group)
       example_group.include(self)
       example_group.extend(self)
@@ -16,6 +18,10 @@ module UnitTests
     def rails_4_x?
       rails_version =~ '~> 4.0'
     end
+    j
+    def rails_lte_4?
+      rails_version <= 4
+    end
 
     def rails_gte_4_1?
       rails_version >= 4.1

spec/unit/shoulda/matchers/active_model/validate_presence_of_matcher_spec.rb

@@ -291,12 +291,14 @@ raising a validation exception on failure.
     end
   end
 
-  context 'an active_resource model' do
-    context 'with the validation context' do
-      it 'does not raise an exception' do
-        expect {
-          expect(active_resource_model).to validate_presence_of(:attr)
-        }.to_not raise_exception
+  if rails_lte_4?
+    context 'an active_resource model' do
+      context 'with the validation context' do
+        it 'does not raise an exception' do
+          expect {
+            expect(active_resource_model).to validate_presence_of(:attr)
+          }.to_not raise_exception
+        end
       end
     end
   end

spec/unit_spec_helper.rb

@@ -12,7 +12,6 @@ end
 RSpec.configure do |config|
   UnitTests::ActiveModelHelpers.configure_example_group(config)
   UnitTests::ActiveModelVersions.configure_example_group(config)
-  UnitTests::ActiveResourceBuilder.configure_example_group(config)
   UnitTests::ClassBuilder.configure_example_group(config)
   UnitTests::ControllerBuilder.configure_example_group(config)
   UnitTests::I18nFaker.configure_example_group(config)
@@ -25,6 +24,10 @@ RSpec.configure do |config|
   UnitTests::ColumnTypeHelpers.configure_example_group(config)
   UnitTests::ValidationMatcherScenarioHelpers.configure_example_group(config)
 
+  if UnitTests::RailsVersions.rails_lte_4?
+    UnitTests::ActiveResourceBuilder.configure_example_group(config)
+  end
+
   config.include UnitTests::Matchers
 
   config.infer_spec_type_from_file_location!