sonic-pi

ActiveSupport::Testing::TimeHelpers#travel_to

Changes current time to the given time by stubbing +Time.now+ and
+Date.today+ to return the time or date passed into this method.

  Time.current # => Sat, 09 Nov 2013 15:34:49 EST -05:00
  travel_to Time.new(2004, 11, 24, 01, 04, 44)
  Time.current # => Wed, 24 Nov 2004 01:04:44 EST -05:00
  Date.current # => Wed, 24 Nov 2004

Dates are taken as their timestamp at the beginning of the day in the
application time zone. <tt>Time.current</tt> returns said timestamp,
and <tt>Time.now</tt> its equivalent in the system time zone. Similarly,
<tt>Date.current</tt> returns a date equal to the argument, and
<tt>Date.today</tt> the date according to <tt>Time.now</tt>, which may
be different. (Note that you rarely want to deal with <tt>Time.now</tt>,
or <tt>Date.today</tt>, in order to honor the application time zone
please always use <tt>Time.current</tt> and <tt>Date.current</tt>.)

This method also accepts a block, which will return the current time back to its original
state at the end of the block:

  Time.current # => Sat, 09 Nov 2013 15:34:49 EST -05:00
  travel_to Time.new(2004, 11, 24, 01, 04, 44) do
    Time.current # => Wed, 24 Nov 2004 01:04:44 EST -05:00
  end
  Time.current # => Sat, 09 Nov 2013 15:34:49 EST -05:00

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