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require_relative '../../spec_helper'
describe "ObjectSpace._id2ref" do
it "converts an object id to a reference to the object" do
s = "I am a string"
r = ObjectSpace._id2ref(s.object_id)
r.should == s
end
it "retrieves true by object_id" do
ObjectSpace._id2ref(true.object_id).should == true
end
it "retrieves false by object_id" do
ObjectSpace._id2ref(false.object_id).should == false
end
it "retrieves nil by object_id" do
ObjectSpace._id2ref(nil.object_id).should == nil
end
it "retrieves a small Integer by object_id" do
ObjectSpace._id2ref(1.object_id).should == 1
ObjectSpace._id2ref((-42).object_id).should == -42
end
it "retrieves a large Integer by object_id" do
obj = 1 << 88
ObjectSpace._id2ref(obj.object_id).should.equal?(obj)
end
it "retrieves a Symbol by object_id" do
ObjectSpace._id2ref(:sym.object_id).should.equal?(:sym)
end
it "retrieves a String by object_id" do
obj = "str"
ObjectSpace._id2ref(obj.object_id).should.equal?(obj)
end
it "retrieves a frozen literal String by object_id" do
ObjectSpace._id2ref("frozen string literal _id2ref".freeze.object_id).should.equal?("frozen string literal _id2ref".freeze)
end
it "retrieves an Encoding by object_id" do
ObjectSpace._id2ref(Encoding::UTF_8.object_id).should.equal?(Encoding::UTF_8)
end
it 'raises RangeError when an object could not be found' do
proc { ObjectSpace._id2ref(1 << 60) }.should raise_error(RangeError)
end
end
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