create_schema_version_table() public method

Create the schema table, if necessary
 /**
  * test create schema version table
  */
 public function test_create_schema_version_table()
 {
     //force drop, start from a clean slate
     if ($this->adapter->has_table(RUCKUSING_TS_SCHEMA_TBL_NAME, true)) {
         $this->adapter->drop_table(RUCKUSING_TS_SCHEMA_TBL_NAME);
     }
     $this->adapter->create_schema_version_table();
     $this->assertEquals(true, $this->adapter->has_table(RUCKUSING_TS_SCHEMA_TBL_NAME, true));
 }