Follow-up to #505

- simplify the spec ransacker in schema.rb
- clarify the spec and increase the coverage
- move the spec into a shared context with similar specs
- revert the .gitignore change in the previous commit

.gitignore

@@ -2,4 +2,3 @@
 .bundle
 Gemfile.lock
 pkg/*
-.idea

spec/ransack/adapters/active_record/base_spec.rb

@@ -3,7 +3,6 @@ require 'spec_helper'
 module Ransack
   module Adapters
     module ActiveRecord
-
       describe Base do
 
         subject { ::ActiveRecord::Base }
@@ -12,7 +11,6 @@ module Ransack
         it { should respond_to :search }
 
         describe '#search' do
-
           subject { Person.ransack }
 
           it { should be_a Search }
@@ -20,14 +18,6 @@ module Ransack
             expect(subject.object).to be_an ::ActiveRecord::Relation
           end
 
-          context 'using ransacker with a SqlLiteral callable' do
-            it 'should not raise an error' do
-              # The `with_banana` ransacker has a SqlLiteral callable
-              search = Person.search("with_banana_in" => "peel")
-              expect { search.result }.to_not raise_error
-            end
-          end
-
           context 'with scopes' do
             before do
               Person.stub :ransackable_scopes =>
@@ -115,14 +105,6 @@ module Ransack
           end
         end
 
-        context "search on an `in` predicate with an array" do
-          it "should function correctly when passing an array of ids" do
-            array = Person.all.map(&:id)
-            s = Person.ransack(id_in: array)
-            expect(s.result.count).to eq array.size
-          end
-        end
-
         describe '#ransacker' do
           # For infix tests
           def self.sane_adapter?
@@ -216,7 +198,7 @@ module Ransack
             expect(s.result.to_a).to eq [p]
           end
 
-          context "search on an `in` predicate with an array to a ransacker" do
+          context "searching on an `in` predicate with a ransacker" do
             it "should function correctly when passing an array of ids" do
               s = Person.ransack(array_users_in: true)
               expect(s.result.count).to be > 0
@@ -227,6 +209,24 @@ module Ransack
               s = Person.ransack(array_names_in: true)
               expect(s.result.count).to be > 0
             end
+
+            it 'should function correctly with an Arel SqlLiteral' do
+              s = Person.search(sql_literal_id_in: 1)
+              expect(s.result.count).to be 1
+              s = Person.search(sql_literal_id_in: ['2', 4, '5', 8])
+              expect(s.result.count).to be 4
+            end
+          end
+
+          context "search on an `in` predicate with an array" do
+            it "should function correctly when passing an array of ids" do
+              array = Person.all.map(&:id)
+              s = Person.ransack(id_in: array)
+              expect(s.result.count).to eq array.size
+            end
+          end
+
+          context 'search on an `in` predicate with an Arel.sql ransacker' do
           end
 
           it "should function correctly when an attribute name ends with '_start'" do

spec/support/schema.rb

@@ -50,17 +50,6 @@ class Person < ActiveRecord::Base
     parent.table[:name]
   end
 
-  # The `with_banana` ransacker is just to reproduce a
-  # particular issue (#504) and probably should be removed
-  # eventually, because it doesn't represent a useful
-  # ransacker one might want in an actual application.
-  ransacker(:with_banana,
-    callable: proc { |parent|
-      Arel::Nodes::SqlLiteral.new("#{Article.table_name}.banana")
-    },
-    formatter: proc { |v| v }
-  )
-
   ransacker :array_users,
     formatter: proc { |v| Person.first(2).map(&:id) } do |parent|
     parent.table[:id]
@@ -77,6 +66,10 @@ class Person < ActiveRecord::Base
       )
   end
 
+  ransacker :sql_literal_id do
+    Arel.sql('people.id')
+  end
+
   def self.ransackable_attributes(auth_object = nil)
     if auth_object == :admin
       column_names + _ransackers.keys - ['only_sort']