Main > Reference Manual > Unit tests > TestSafetyStock
This test demonstrates the capabilities to model and plan safety stocks in frePPLe.
There are 2 ways:
- Quantity-based safety stock.
A minimum calendar on a buffer defines the desired minimum stock level, which can vary over time.
The solver tries to replenish to this level when replenishing the buffer, but handles it as a soft constraint only.
The buffer flags a problem when the inventory drops below the minimum target. - Time-based safety stock.
A post-operation time on an operation defines a time delay after the end of the operation.
The solver tries to respect this delay, but handles it as a soft constraint only.
No problem is shown when the post-operation time is shrunk or reduced.