public function testGetForeignKeysReferencingTable()
 {
     $fk1 = $this->getForeignKeyMock('fk1', array('foreign_table_name' => 'authors'));
     $fk2 = $this->getForeignKeyMock('fk2', array('foreign_table_name' => 'categories'));
     $fk3 = $this->getForeignKeyMock('fk3', array('foreign_table_name' => 'authors'));
     $table = new Table();
     $table->addForeignKey($fk1);
     $table->addForeignKey($fk2);
     $table->addForeignKey($fk3);
     $this->assertCount(2, $table->getForeignKeysReferencingTable('authors'));
 }