public void AddColumnsWithIdenticalNames_SetsHasDuplicateColumnTrue()
        {
            const string columnName = "SBU (Use Drop Down)";
              var columnMap = new ColumnMap(_settings);

              columnMap.HasDuplicateColumns.Should().BeFalse();
              columnMap.AddColumnLocator(new ColumnLocator(columnName, 69));
              columnMap.AddColumnLocator(new ColumnLocator(columnName, 3));
              columnMap.HasDuplicateColumns.Should().BeTrue();
        }
 public void ColumnLocatorNotFound_ReturnsNegativeOne()
 {
     var columnMap = new ColumnMap(_settings);
       columnMap.SbuColumnId.Should().Be(-1);
 }