1  require "active_support/core_ext/module"
   2 
   3  module ActiveSupport
   4    module Testing
   5      module Deprecation #:nodoc:
   6        def assert_deprecated(match = nil, &block)
   7          result, warnings = collect_deprecations(&block)
   8          assert !warnings.empty?, "Expected a deprecation warning within the block but received none"
   9          if match
  10            match = Regexp.new(Regexp.escape(match)) unless match.is_a?(Regexp)
  11            assert warnings.any? { |w| w =~ match }, "No deprecation warning matched #{match}: #{warnings.join(', ')}"
  12          end
  13          result
  14        end
  15 
  16        def assert_not_deprecated(&block)
  17          result, deprecations = collect_deprecations(&block)
  18          assert deprecations.empty?, "Expected no deprecation warning within the block but received #{deprecations.size}: \n  #{deprecations * "\n  "}"
  19          result
  20        end
  21 
  22        private
  23          def collect_deprecations
  24            old_behavior = ActiveSupport::Deprecation.behavior
  25            deprecations = []
  26            ActiveSupport::Deprecation.behavior = Proc.new do |message, callstack|
  27              deprecations << message
  28            end
  29            result = yield
  30            [result, deprecations]
  31          ensure
  32            ActiveSupport::Deprecation.behavior = old_behavior
  33          end
  34      end
  35    end
  36  end
  37 
  38  begin
  39    require 'test/unit/error'
  40 
  41    module Test
  42      module Unit
  43        class Error # :nodoc:
  44          # Silence warnings when reporting test errors.
  45          def message_with_silenced_deprecation
  46            ActiveSupport::Deprecation.silence do
  47              message_without_silenced_deprecation
  48            end
  49          end
  50 
  51          alias_method_chain :message, :silenced_deprecation
  52        end
  53      end
  54    end
  55  rescue LoadError
  56    # Using miniunit, ignore.
  57  end