Aliases

Alias mapping

ClockServiceProvider contributes the following alias map:

Requested service Target service
Psr\Clock\ClockInterface FastForward\Clock\SystemClock

Operational consequences

  • resolving the PSR interface gives the SystemClock instance;
  • resolving the concrete SystemClock gives that same instance;
  • replacing SystemClock in an earlier provider overrides the default cleanly.

Recommended override strategy

When you want deterministic time in tests:

  1. register a provider that exposes your FrozenClock ;
  2. alias Psr\Clock\ClockInterface to your frozen clock;
  3. pass that provider before ClockServiceProvider to container() .