A failing spec with expect(value).to eq(1.0) throws a NoMethodError instead.

[ransombriggs]

I get NoMethodError when doing a diff against a float constant because of how ObjectSpace.dump(object) treats floats.

# here is the problematic line in helpers.rb
address = JSON.parse(ObjectSpace.dump(object))["address"]

ObjectSpace.dump(1.0)
=> "1.00000"

      # rough fix, not sure what you want to happen if JSON.parse is not a hash
      def object_address_for(object)
        # Sources: <https://bugs.ruby-lang.org/issues/15408> and <https://bugs.ruby-lang.org/issues/15626#Object-ID>
        address = JSON.parse(ObjectSpace.dump(object)).try(:[], "address")
        if address
          "0x%016x" % Integer(address, 16)
        else
          # I am not certain what you would want here
        end
      end

[mcmire]

Hey! Thanks for the heads-up on this. I'm not sure why I haven't encountered it so far!

In terms of your patch, that seems like that could work. For the else case, I think we'd want to just return an empty string.

If you're down to submit a PR with this patch and add a test or two close to here, then I can get this in!

[ransombriggs]

I pushed up a PR for this: #146

[mcmire]

This was fixed in #146, and the fix is available in 0.9.0.