Cleaner#orm is readonly after creation.

lib/database_cleaner/cleaner.rb

@@ -13,12 +13,14 @@ module DatabaseCleaner
       [orm, db] <=> [other.orm, other.db]
     end
 
-    def initialize(orm = :null, opts = {})
-      self.orm = orm
+    def initialize(orm, opts = {})
+      @orm = orm
       self.db = opts[:connection] || opts[:model] if opts.has_key?(:connection) || opts.has_key?(:model)
       Safeguard.new.run
     end
 
+    attr_reader :orm
+
     def db=(desired_db)
       @db = self.strategy_db = desired_db
     end
@@ -44,13 +46,6 @@ module DatabaseCleaner
       @strategy ||= NullStrategy.new
     end
 
-    attr_reader :orm
-
-    def orm= orm
-      raise ArgumentError if orm.nil?
-      @orm = orm.to_sym
-    end
-
     extend Forwardable
     delegate [:start, :clean, :cleaning] => :strategy
 

lib/database_cleaner/cleaners.rb

@@ -17,11 +17,6 @@ module DatabaseCleaner
       remove_duplicates
     end
 
-    def orm=(orm)
-      values.each { |cleaner| cleaner.orm = orm }
-      remove_duplicates
-    end
-
     def start
       values.each { |connection| connection.start }
     end

lib/database_cleaner/core.rb

@@ -8,7 +8,6 @@ module DatabaseCleaner
     delegate [
       :[],
       :strategy=,
-      :orm=,
       :start,
       :clean,
       :clean_with,

spec/database_cleaner/cleaner_spec.rb

@@ -41,25 +41,14 @@ module DatabaseCleaner
           expect(cleaner.orm).to eq :a_orm
         end
 
-        it "converts string to symbols" do
-          cleaner = Cleaner.new("mongoid")
-          expect(cleaner.orm).to eq :mongoid
-        end
-
-        it "should default to :null" do
-          cleaner = Cleaner.new
-          expect(cleaner.orm).to eq :null
-        end
-
-        it "raises ArgumentError when explicitly set to nil" do
-          cleaner = Cleaner.new
-          expect { cleaner.orm = nil }.to raise_error(ArgumentError)
+        it "raises ArgumentError when no orm is specified" do
+          expect { Cleaner.new }.to raise_error(ArgumentError)
         end
       end
     end
 
     describe "db" do
-      subject(:cleaner) { Cleaner.new }
+      subject(:cleaner) { Cleaner.new(:orm) }
 
       it "should default to :default" do
         expect(cleaner.db).to eq :default
@@ -72,7 +61,7 @@ module DatabaseCleaner
     end
 
     describe "db=" do
-      subject(:cleaner) { Cleaner.new }
+      subject(:cleaner) { Cleaner.new(:orm) }
 
       context "when strategy supports db specification" do
         it "should pass db down to its current strategy" do
@@ -182,18 +171,8 @@ module DatabaseCleaner
       end
     end
 
-    describe "orm" do
-      let(:mock_orm) { double("orm") }
-
-      it "should return orm if orm set" do
-        cleaner = Cleaner.new
-        cleaner.orm = :desired_orm
-        expect(cleaner.orm).to eq :desired_orm
-      end
-    end
-
     describe "proxy methods" do
-      subject(:cleaner) { Cleaner.new }
+      subject(:cleaner) { Cleaner.new(:orm) }
 
       let(:strategy) { double(:strategy) }
 

spec/database_cleaner/cleaners_spec.rb

@@ -63,12 +63,6 @@ RSpec.describe DatabaseCleaner::Cleaners do
         cleaners.strategy = stratagem
       end
 
-      it "should proxy orm=" do
-        orm = double("orm")
-        expect(cleaner).to receive(:orm=).with(orm)
-        cleaners.orm = orm
-      end
-
       it "should proxy start" do
         expect(cleaner).to receive(:start)
         cleaners.start
@@ -105,13 +99,6 @@ RSpec.describe DatabaseCleaner::Cleaners do
           })
         end
 
-        it "should proxy orm to all cleaners" do
-          expect(active_record).to receive(:orm=)
-          expect(data_mapper).to receive(:orm=)
-
-          cleaners.orm = :orm
-        end
-
         it "should proxy start to all cleaners" do
           expect(active_record).to receive(:start)
           expect(data_mapper).to receive(:start)
@@ -163,31 +150,10 @@ RSpec.describe DatabaseCleaner::Cleaners do
       end
 
       # ah now we have some difficulty, we mustn't allow duplicate cleaners to exist, but they could
-      # plausably want to force orm/strategy change on two sets of orm that differ only on db
+      # plausably want to force strategy change on two sets of orm that differ only on db
       context "multiple orm proxy methods" do
         class FakeStrategy < Struct.new(:orm, :db, :strategy); end
 
-        context "with differing orms and dbs" do
-          let(:active_record_1) { FakeStrategy.new(:active_record) }
-          let(:active_record_2) { FakeStrategy.new(:active_record, :different) }
-          let(:data_mapper_1)   { FakeStrategy.new(:data_mapper) }
-
-          subject(:cleaners) do
-            DatabaseCleaner::Cleaners.new({
-              active_record_1: active_record_1,
-              active_record_2: active_record_2,
-              data_mapper_1: data_mapper_1,
-            })
-          end
-
-          it "should proxy #orm= to all cleaners and remove duplicate cleaners" do
-            expect { cleaners.orm = :data_mapper }
-              .to change { cleaners.values }
-              .from([active_record_1,active_record_2,data_mapper_1])
-              .to([active_record_1,active_record_2])
-          end
-        end
-
         context "with differing strategies" do
           let(:active_record_1) { FakeStrategy.new(:active_record, :default, :truncation) }
           let(:active_record_2) { FakeStrategy.new(:active_record, :default, :transaction) }