Compatibility with ruby-prof 0.16

[januszm]

See https://github.com/ruby-prof/ruby-prof/blob/master/CHANGES , there are major changes to the print method in commit: ruby-prof/ruby-prof@24a267b

After upgrading ruby-prof to 0.16.x I get this error message:

...gems/ruby-prof-0.16.2/lib/ruby-prof/printers/call_tree_printer.rb:46
  in `print': wrong number of arguments (2 for 0..1) (ArgumentError)
...gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:54
  in `block (2 levels) in record'

ruby-prof print now takes one options = {} argument

[taq]

Reverting back to ruby-prof 0.15.9 solved my problem, but people needs to take a look at this.

[daveshah]

Same issue for me and reverting worked as well 👍

[yangliyi]

Reverting does the trick. This saved my day 😄

[seafr]

As a workaround, you can set profile_options explicitly in your test file so the formats option does not include :call_tree (assuming you don't need it).

self.profile_options = { runs: 5, formats: [:flat, :graph_html], metrics: ... } works for me.

I'm using:

• ruby-prof (0.17.0)
• rails-perftest (0.0.7)

[mistersourcerer]

I have opened a PR #48 trying to address this issue, maybe it can be useful.