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Contents
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures', __FILE__)
# NOTE: A call to define_finalizer does not guarantee that the
# passed proc or callable will be called at any particular time.
# It is highly questionable whether these aspects of ObjectSpace
# should be spec'd at all.
describe "ObjectSpace.define_finalizer" do
it "raises an ArgumentError if the action does not respond to call" do
lambda {
ObjectSpace.define_finalizer("", 3)
}.should raise_error(ArgumentError)
end
it "accepts an object and a proc" do
handler = lambda { |obj| obj }
ObjectSpace.define_finalizer("garbage", handler).should == [0, handler]
end
it "accepts an object and a callable" do
handler = mock("callable")
def handler.call(obj) end
ObjectSpace.define_finalizer("garbage", handler).should == [0, handler]
end
it "raises ArgumentError trying to define a finalizer on a non-reference" do
lambda {
ObjectSpace.define_finalizer(:blah) { 1 }
}.should raise_error(ArgumentError)
end
# see [ruby-core:24095]
ruby_version_is "1.9" do
with_feature :fork do
it "calls finalizer on process termination" do
rd, wr = IO.pipe
if Kernel::fork then
wr.close
rd.read.should == "finalized"
rd.close
else
rd.close
handler = ObjectSpaceFixtures.scoped(wr)
obj = "Test"
ObjectSpace.define_finalizer(obj, handler)
exit 0
end
end
it "calls finalizer at exit even if it is self-referencing" do
rd, wr = IO.pipe
if Kernel::fork then
wr.close
rd.read.should == "finalized"
rd.close
else
rd.close
obj = "Test"
handler = Proc.new { wr.write "finalized"; wr.close }
ObjectSpace.define_finalizer(obj, handler)
exit 0
end
end
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems