class RSpec::Matchers::MultiMatcherDiff

@api private Handles list of expected and actual value pairs when there is a need to render multiple diffs. Also can handle one pair.

Constants

DEFAULT_DIFF_LABEL: @private Default diff label when there is only one matcher in diff output
DESCRIPTION_MAX_LENGTH: @private Maximum readable matcher description length

Public Class Methods

for_many_matchers (matchers)

@api private Wraps provided matcher list in instance of MultiMatcherDiff. @param [Array<Any>] matchers list of matchers to wrap @return [RSpec::Matchers::MultiMatcherDiff]

# File rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb, line 37
def self.for_many_matchers(matchers)
  new(matchers.map { |m| [m.expected, diff_label_for(m), m.actual] })
end

from (expected, actual)

@api private Wraps provided expected value in instance of MultiMatcherDiff. If provided value is already an MultiMatcherDiff then it just returns it. @param [Any] expected value to be wrapped @param [Any] actual value @return [RSpec::Matchers::MultiMatcherDiff]

# File rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb, line 27
def self.from(expected, actual)
  return expected if self === expected
  new([[expected, DEFAULT_DIFF_LABEL, actual]])
end

new (expected_list)

# File rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb, line 16
def initialize(expected_list)
  @expected_list = expected_list
end

Public Instance Methods

message_with_diff (message, differ)

@api private Returns message with diff(s) appended for provided differ factory and actual value if there are any @param [String] message original failure message @param [Proc] differ @return [String]

# File rspec-expectations/lib/rspec/matchers/multi_matcher_diff.rb, line 47
def message_with_diff(message, differ)
  diff = diffs(differ)
  message = "#{message}\n#{diff}" unless diff.empty?
  message
end