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require "active_support/backtrace_cleaner"
module Rails
class BacktraceCleaner < ActiveSupport::BacktraceCleaner
APP_DIRS_PATTERN = /^\/?(app|config|lib|test|\(\w*\))/
RENDER_TEMPLATE_PATTERN = /:in `_render_template_\w*'/
EMPTY_STRING = "".freeze
SLASH = "/".freeze
DOT_SLASH = "./".freeze
def initialize
super
@root = "#{Rails.root}/".freeze
add_filter { |line| line.sub(@root, EMPTY_STRING) }
add_filter { |line| line.sub(RENDER_TEMPLATE_PATTERN, EMPTY_STRING) }
add_filter { |line| line.sub(DOT_SLASH, SLASH) } # for tests
add_gem_filters
add_silencer { |line| !APP_DIRS_PATTERN.match?(line) }
end
private
def add_gem_filters
gems_paths = (Gem.path | [Gem.default_dir]).map { |p| Regexp.escape(p) }
return if gems_paths.empty?
gems_regexp = %r{(#{gems_paths.join('|')})/gems/([^/]+)-([\w.]+)/(.*)}
gems_result = '\2 (\3) \4'.freeze
add_filter { |line| line.sub(gems_regexp, gems_result) }
end
end
end