Tests about ag-grid

[vitvad]

+1
@ceolter, this have to be the first priority, also add performance tests.

Cool component. Not written in angular, but worse to check their approach handsontable

some advises:

• cache DOM dimensions
• render and perform heavy operations with requestAnimationFrame
• IE10-11 rendering optimizations need

[ceolter]

Thanks @vitvad, testing is deffo on my plan. However I've purposely left it aside for the first few iterations, it's my style of programming, as the grid is constantly undergoing major re-designs and re-factorings. Once the design has settled down, I'll be introducing tests. Thanks also for the pointers, I'll check all those out.

[ceolter]

closing this issue as whether we use tests or not is a project decision, not an issue with the codebase :)