Class: Spec::Runner::CleverBacktraceTweaker

Inherits:
BacktraceTweaker
  • Object
show all
Defined in:
lib/rspec/backtrace/clever-tweaker.rb

Constant Summary collapse

DefaultIgnorePatterns = 
[
  %r{/rspec-[^/]*/lib/spec/},
  %r{/spork-[^/]*/lib/spork/},
  %r{/lib/ruby/},
  %r{bin/spec:},
  %r{bin/spork:},
  %r{bin/rcov:},
  %r{lib/rspec-rails},
  %r{vendor/rails},
  # TextMate's Ruby and RSpec plugins
  %r{Ruby\.tmbundle/Support/tmruby.rb:},
  %r{RSpec\.tmbundle/Support/lib},
  %r{temp_textmate\.},
  %r{mock_frameworks/rspec},
  %r{spec_server%}
]

Instance Method Summary collapse

Constructor Details

#initialize(*patterns) ⇒ CleverBacktraceTweaker

Returns a new instance of CleverBacktraceTweaker.



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# File 'lib/rspec/backtrace/clever-tweaker.rb', line 21

def initialize(*patterns)
  @ignore_patterns = []
end

Instance Method Details

#clean_up_double_slashes(line) ⇒ Object 



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# File 'lib/rspec/backtrace/clever-tweaker.rb', line 25

def clean_up_double_slashes(line)
  line.gsub!('//','/')
end

#ignore_patterns(*patterns) ⇒ Object 



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# File 'lib/rspec/backtrace/clever-tweaker.rb', line 29

def ignore_patterns(*patterns)
  @ignore_patterns += patterns
end

#ignored_patterns ⇒ Object 



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# File 'lib/rspec/backtrace/clever-tweaker.rb', line 33

def ignored_patterns
  DefaultIgnorePatterns + @ignore_patterns
end

#tweak_backtrace(error) ⇒ Object 



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# File 'lib/rspec/backtrace/clever-tweaker.rb', line 37

def tweak_backtrace(error)
  return if error.backtrace.nil?
  tweaked = error.backtrace.collect do |message|
    clean_up_double_slashes(message)
    kept_lines = message.split("\n").select do |line|
      ignored_patterns.each do |ignore|
        break if line =~ ignore
      end
    end
    kept_lines.empty?? nil : kept_lines.join("\n")
  end.compact

  tweaked.map! do |line|
    line = line.split(/:/)
    [File::expand_path(line[0]).split(File::Separator)] + line[1..-1]
  end
  
  bedrock = Dir::pwd.split(File::Separator)
  bedrock.shift
  prefix = ((tweaked.first||[]).first||[]).first
  until tweaked.find {|line| line.first.first != prefix}
    tweaked.map! do |line|
      [(line[0])[1..-1]] + line[1..-1]
    end
    break if bedrock.shift.nil?
    prefix = ((tweaked.first||[]).first||[]).first
  end

  paths_seen = {}
  result = []
  jump_header = ' \> '
  tweaked.each do |line|
    if paths_seen.has_key?(line.first)
      result.last << paths_seen[line.first].to_s
    else
      index = paths_seen.keys.length + 1
      result << "#{index} " + ([File::join(*line[0])] + line[1..-1]).join(":")
      result << jump_header.dup
      paths_seen[line.first] = index
    end
  end
  error.set_backtrace(result.find_all{|line| line != jump_header})
end