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require_relative '../../spec_helper'
describe "ObjectSpace.undefine_finalizer" do
it "removes finalizers for an object" do
code = <<~RUBY
obj = Object.new
ObjectSpace.define_finalizer(obj, proc { |id| puts "hello" })
ObjectSpace.undefine_finalizer(obj)
RUBY
ruby_exe(code).should.empty?
end
it "should not remove finalizers for a frozen object" do
code = <<~RUBY
obj = Object.new
ObjectSpace.define_finalizer(obj, proc { |id| print "ok" })
obj.freeze
begin
ObjectSpace.undefine_finalizer(obj)
rescue
end
RUBY
ruby_exe(code).should == "ok"
end
it "should raise when removing finalizers for a frozen object" do
obj = Object.new
obj.freeze
-> { ObjectSpace.undefine_finalizer(obj) }.should raise_error(FrozenError)
end
end
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