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require 'abstract_unit'
require 'active_support/core_ext/object'
class ObjectTests < ActiveSupport::TestCase
class DuckTime
def acts_like_time?
true
end
end
def test_duck_typing
object = Object.new
time = Time.now
date = Date.today
dt = DateTime.new
duck = DuckTime.new
assert !object.acts_like?(:time)
assert !object.acts_like?(:date)
assert time.acts_like?(:time)
assert !time.acts_like?(:date)
assert !date.acts_like?(:time)
assert date.acts_like?(:date)
assert dt.acts_like?(:time)
assert dt.acts_like?(:date)
assert duck.acts_like?(:time)
assert !duck.acts_like?(:date)
end
end
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