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clock

Package clock provides an abstraction for system time that enables testing of time-sensitive code.

Where you'd use time.Now, instead use clk.Now where clk is an instance of Clock.

When running your code in production, pass it a Clock given by Default() and when you're running it in your tests, pass it an instance of Clock from NewFake().

When you do that, you can use FakeClock's Add and Set methods to control how time behaves in your code making them more reliable while also expanding the space of problems you can test.

This code intentionally does not attempt to provide an abstraction over time.Ticker and time.Timer because Go does not have the runtime or API hooks available to do reliably. See https://github.com/golang/go/issues/8869

Be sure to test Time equality with time.Time#Equal, not ==.

For documentation, see the godoc.

README.md

clock