public void AddString_Valid_Added()
        {
            var expected = new StringColumnDefinition(ColumnName, SqlDbType.VarChar);

            var actual = columns.AddString(ColumnName, SqlDbType.VarChar);

            Assert.AreEqual(1, columns.Count);
            Assert.AreEqual(expected, actual);
        }
 public void ConstructorWithWrongDataTypeThrowsException()
 {
     definition = new StringColumnDefinition(ColumnName, SqlDbType.Int);
 }