Merge pull request #84 from jhollinger/master

Truncation should reset a table's id column

lib/database_cleaner/active_record/truncation.rb

@@ -54,6 +54,7 @@ module ActiveRecord
     class SQLite3Adapter < SQLITE_ADAPTER_PARENT
       def delete_table(table_name)
         execute("DELETE FROM #{quote_table_name(table_name)};")
+        execute("DELETE FROM sqlite_sequence where name = '#{table_name}';")
       end
       alias truncate_table delete_table
     end

lib/database_cleaner/data_mapper/truncation.rb

@@ -53,6 +53,7 @@ module DataMapper
 
       def truncate_table(table_name)
         execute("DELETE FROM #{quote_name(table_name)};")
+        execute("DELETE FROM sqlite_sequence where name = '#{table_name}';")
       end
 
       # this is a no-op copied from activerecord
@@ -79,6 +80,7 @@ module DataMapper
 
       def truncate_table(table_name)
         execute("DELETE FROM #{quote_name(table_name)};")
+        execute("DELETE FROM sqlite_sequence where name = '#{table_name}';")
       end
 
       # this is a no-op copied from activerecord
@@ -107,7 +109,7 @@ module DataMapper
       end
 
       def truncate_table(table_name)
-        execute("TRUNCATE TABLE #{quote_name(table_name)} CASCADE;")
+        execute("TRUNCATE TABLE #{quote_name(table_name)} RESTART IDENTITY CASCADE;")
       end
 
       # FIXME