diff --git a/spec/database_cleaner/active_record/deletion/mysql2_spec.rb b/spec/database_cleaner/active_record/deletion/mysql2_spec.rb
new file mode 100644
index 0000000..c76184e
--- /dev/null
+++ b/spec/database_cleaner/active_record/deletion/mysql2_spec.rb
@@ -0,0 +1,28 @@
+require 'spec_helper'
+require 'active_record'
+require 'support/active_record/mysql2_setup'
+require 'database_cleaner/active_record/deletion'
+
+module ActiveRecord
+  module AbstractMysqlAdapter
+    describe do
+      before(:all) { active_record_mysql2_setup }
+
+      let(:connection) { active_record_mysql2_connection }
+
+      subject { DatabaseCleaner::ActiveRecord::Deletion.new }
+
+      describe "#delete_table" do
+        it "should delete the table" do
+          2.times { User.create }
+
+          allow(subject).to receive(:tables_with_new_rows).and_return(["users"])
+
+          subject.clean
+
+          User.count.should eq 0
+        end
+      end
+    end
+  end
+end
diff --git a/spec/database_cleaner/active_record/deletion/mysql_spec.rb b/spec/database_cleaner/active_record/deletion/mysql_spec.rb
new file mode 100644
index 0000000..0d71e2c
--- /dev/null
+++ b/spec/database_cleaner/active_record/deletion/mysql_spec.rb
@@ -0,0 +1,23 @@
+require 'spec_helper'
+require 'active_record'
+require 'support/active_record/mysql_setup'
+require 'database_cleaner/active_record/deletion'
+
+module ActiveRecord
+  module AbstractMysqlAdapter
+    describe do
+      before(:all) { active_record_mysql_setup }
+
+      let(:connection) { active_record_mysql_connection }
+
+      describe "#delete_table" do
+        it "should delete the table" do
+          2.times { User.create }
+          DatabaseCleaner::ActiveRecord::Deletion.new.clean
+
+          User.count.should eq 0
+        end
+      end
+    end
+  end
+end
diff --git a/spec/database_cleaner/active_record/deletion/postgresql_spec.rb b/spec/database_cleaner/active_record/deletion/postgresql_spec.rb
new file mode 100644
index 0000000..c22c8df
--- /dev/null
+++ b/spec/database_cleaner/active_record/deletion/postgresql_spec.rb
@@ -0,0 +1,62 @@
+require 'spec_helper'
+require 'active_record'
+require 'support/active_record/postgresql_setup'
+require 'database_cleaner/active_record/deletion'
+
+module ActiveRecord
+  module ConnectionAdapters
+    describe "schema_migrations table" do
+      it "is not deleted" do
+        active_record_pg_migrate
+        DatabaseCleaner::ActiveRecord::Deletion.new.clean
+        result = active_record_pg_connection.execute("select count(*) from schema_migrations;")
+        result.values.first.should eq ["2"]
+      end
+    end
+
+    describe do
+      before(:all) { active_record_pg_setup }
+
+      let(:connection) do
+        active_record_pg_connection
+      end
+
+      before(:each) do
+        connection.tables.each do |table|
+          connection.delete_table table
+        end
+      end
+
+      describe "#delete_table" do
+        it "deletes the table" do
+          2.times { User.create }
+
+          connection.delete_table('users')
+          User.count.should eq 0
+        end
+
+        it "deletes the table without id sequence" do
+          2.times { Agent.create }
+
+          connection.delete_table('agents')
+          Agent.count.should eq 0
+        end
+      end
+
+      describe ":except option cleanup" do
+        it "should not delete the tables specified in the :except option" do
+          2.times { User.create }
+
+          ::DatabaseCleaner::ActiveRecord::Deletion.new(:except => ['users']).clean
+          expect( User.count ).to eq 2
+        end
+      end
+
+      describe '#database_cleaner_table_cache' do
+        it 'should default to the list of tables with their schema' do
+          connection.database_cleaner_table_cache.first.should match(/^public\./)
+        end
+      end
+    end
+  end
+end
diff --git a/spec/database_cleaner/active_record/deletion/sqlite3_spec.rb b/spec/database_cleaner/active_record/deletion/sqlite3_spec.rb
new file mode 100644
index 0000000..af9ef09
--- /dev/null
+++ b/spec/database_cleaner/active_record/deletion/sqlite3_spec.rb
@@ -0,0 +1,31 @@
+require 'spec_helper'
+require 'active_record'
+require 'support/active_record/sqlite3_setup'
+require 'database_cleaner/active_record/deletion'
+
+module ActiveRecord
+  module ConnectionAdapters
+    describe do
+      before(:all) { active_record_sqlite3_setup }
+
+      let(:connection) do
+        active_record_sqlite3_connection
+      end
+
+      before(:each) do
+        connection.tables.each do |table|
+          connection.delete_table table
+        end
+      end
+
+      describe "#delete_table" do
+        it "deletes the table" do
+          2.times { User.create }
+
+          connection.delete_table('users')
+          User.count.should eq 0
+        end
+      end
+    end
+  end
+end