gistfile1.php

<?php
     public function testAddFieldNoFieldName()  {
          $this->createTable();
          $emptySuccess = false;
          try {
              Migration::addField( 'testTable' ); 
          }
          catch ( MigrationException $e ) {
              $emptySuccess = true; 
          }
          $this->assertTrue( $emptySuccess, 'addField must not create a field when fieldname is empty' );
     }
?>

gistfile2.php

<?php
     public function testAddFieldNoFieldName()  {
          $this->createTable();
          $this->assertThrows( function() {
              Migration::addField( 'testTable' ); 
          }, 'MigrationException', 'addField must not create a field when fieldname is empty' );
     }
?>