Fix deprecated ActiveSupport::Deprecation#warn call

Author: martinschaflitzl1

lib/assignable_values/active_record/restriction/scalar_attribute.rb

@@ -88,7 +88,7 @@ def define_humanized_assignable_values_instance_method
 
             unless multiple
               define_method :"humanized_#{restriction.property.to_s.pluralize}" do
-                ActiveSupport::Deprecation.warn("humanized_<value>s is deprecated, use humanized_assignable_<value>s instead", caller)
+                ActiveSupport::Deprecation.new.warn("humanized_<value>s is deprecated, use humanized_assignable_<value>s instead", caller)
                 restriction.humanized_assignable_values(self)
               end
             end

lib/assignable_values/humanizable_string.rb

@@ -8,7 +8,7 @@ def initialize(string, humanization)
   end
 
   def humanized
-    ActiveSupport::Deprecation.warn("assignable_<value>.humanized is deprecated, use humanized_assignable_<value>s.humanized instead", caller)
+    ActiveSupport::Deprecation.new.warn("assignable_<value>.humanized is deprecated, use humanized_assignable_<value>s.humanized instead", caller)
     @humanization
   end
 

spec/assignable_values/active_record_spec.rb

@@ -1277,9 +1277,17 @@ def genres
                 %w[pop rock]
               end
             end
-            ActiveSupport::Deprecation.should_receive(:warn)
+            deprecation_instance = instance_double(ActiveSupport::Deprecation)
+            allow(ActiveSupport::Deprecation).to receive(:new).and_return(deprecation_instance)
+            allow(deprecation_instance).to receive(:warn)
+
             genres = klass.new.humanized_genres
             genres.collect(&:humanized).should == ['Pop music', 'Rock music']
+
+            expect(deprecation_instance).to have_received(:warn).with(
+              "humanized_<value>s is deprecated, use humanized_assignable_<value>s instead",
+              instance_of(Array)
+            )
           end
 
           it "should define a method #humanized on assignable string values, which return up the value's' translation" do
@@ -1288,8 +1296,16 @@ def genres
                 %w[pop rock]
               end
             end
-            ActiveSupport::Deprecation.should_receive(:warn).at_least(:once)
+            deprecation_instance = instance_double(ActiveSupport::Deprecation)
+            allow(ActiveSupport::Deprecation).to receive(:new).and_return(deprecation_instance)
+            allow(deprecation_instance).to receive(:warn)
+
             klass.new.assignable_genres.collect(&:humanized).should == ['Pop music', 'Rock music']
+
+            expect(deprecation_instance).to have_received(:warn).with(
+              "assignable_<value>.humanized is deprecated, use humanized_assignable_<value>s.humanized instead",
+              instance_of(Array)
+            ).at_least(:once)
           end
 
           it 'should not define a method #humanized on values that are not strings' do