removing duplicate test

activerecord/test/cases/migration_test.rb

@@ -445,43 +445,6 @@ def test_create_table_without_a_block
       Person.connection.drop_table table_name rescue nil
     end
 
-    def test_create_table_with_custom_sequence_name
-      return unless current_adapter? :OracleAdapter
-
-      # table name is 29 chars, the standard sequence name will
-      # be 33 chars and fail
-      assert_raise(ActiveRecord::StatementInvalid) do
-        begin
-          Person.connection.create_table :table_with_name_thats_just_ok do |t|
-            t.column :foo, :string, :null => false
-          end
-        ensure
-          Person.connection.drop_table :table_with_name_thats_just_ok rescue nil
-        end
-      end
-
-      # should be all good w/ a custom sequence name
-      assert_nothing_raised do
-        begin
-          Person.connection.create_table :table_with_name_thats_just_ok,
-                                         :sequence_name => 'suitably_short_seq' do |t|
-            t.column :foo, :string, :null => false
-          end
-
-          Person.connection.execute("select suitably_short_seq.nextval from dual")
-
-        ensure
-          Person.connection.drop_table :table_with_name_thats_just_ok,
-                                       :sequence_name => 'suitably_short_seq' rescue nil
-        end
-      end
-
-      # confirm the custom sequence got dropped
-      assert_raise(ActiveRecord::StatementInvalid) do
-        Person.connection.execute("select suitably_short_seq.nextval from dual")
-      end
-    end
-
     # Sybase, and SQLite3 will not allow you to add a NOT NULL
     # column to a table without a default value.
     unless current_adapter?(:SybaseAdapter, :SQLite3Adapter)