Add failing tests for passing boolean values to scopes.

- Small typo fix (@MarcelEeken).

- Update the TODO comment (@jonatack).

These tests are related to issue #566. Closes PR #575.

spec/ransack/adapters/active_record/base_spec.rb

@@ -63,6 +63,20 @@ module Ransack
               expect(s.result.to_sql).to (include 'age > 18')
             end
 
+            # TODO: Implement a way to pass true/false values like 0 or 1 to
+            # scopes (e.g. with `in` / `not_in` predicates), without Ransack
+            # converting them to true/false boolean values instead.
+
+            # it 'passes true values to scopes', focus: true  do
+            #   s = Person.ransack('over_age' => 1)
+            #   expect(s.result.to_sql).to (include 'age > 1')
+            # end
+
+            # it 'passes false values to scopes', focus: true  do
+            #   s = Person.ransack('over_age' => 0)
+            #   expect(s.result.to_sql).to (include 'age > 0')
+            # end
+
             it "chains scopes" do
               s = Person.ransack('over_age' => 18, 'active' => true)
               expect(s.result.to_sql).to (include 'age > 18')