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module ActiveSupport
module Testing
module GarbageCollection
def self.included(base)
base.teardown :scrub_leftover_instance_variables
base.setup :begin_gc_deferment
base.teardown :reconsider_gc_deferment
end
private
RESERVED_INSTANCE_VARIABLES = %w(@test_passed @passed @method_name @__name__ @_result).map(&:to_sym)
def scrub_leftover_instance_variables
(instance_variables.map(&:to_sym) - RESERVED_INSTANCE_VARIABLES).each do |var|
remove_instance_variable(var)
end
end
# Minimum interval, in seconds, at which to run GC. Might be less
# frequently than this, if a single test takes longer than this to
# run.
DEFERRED_GC_THRESHOLD = (ENV['DEFERRED_GC_THRESHOLD'] || 1.0).to_f
@@last_gc_run = Time.now
def begin_gc_deferment
GC.disable if DEFERRED_GC_THRESHOLD > 0
end
def reconsider_gc_deferment
if DEFERRED_GC_THRESHOLD > 0 && Time.now - @@last_gc_run >= DEFERRED_GC_THRESHOLD
GC.enable
GC.start
GC.disable
@@last_gc_run = Time.now
end
end
end
end
end
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