| PASS: datagrid JS binding is [object HTMLDataGridElement] |
| PASS: Initial value of datagrid.columns is defined. |
| PASS: datagrid.columns JS binding is [object DataGridColumnList] |
| PASS: Initial length of datagrid.columns is 2. |
| PASS: newCol JS binding is [object HTMLDataGridColElement] |
| PASS: We have three columns in the list. |
| PASS: The column's ID is from as expected. |
| PASS: The column's label is From as expected. |
| PASS: The column's type is text as expected. |
| PASS: The column's primary property is true as expected. |
| PASS: The column's sortable property is 2 as expected. |
| PASS: The first column is the primary column. |
| PASS: After removing a column, the length of datagrid.columns is 2. |
| PASS: No column is the primary column. |
| |
