class RSpec::Matchers::BuiltIn::RespondTo

@api private Provides the implementation for ‘respond_to`. Not intended to be instantiated directly.

Public Class Methods

new (*names) 
# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 10
def initialize(*names)
  @names = names
  @expected_arity = nil
  @expected_keywords = []
  @ignoring_method_signature_failure = false
  @unlimited_arguments = nil
  @arbitrary_keywords = nil
end

Public Instance Methods

argument ()

@api public No-op. Intended to be used as syntactic sugar when using ‘with`.

@example

expect(obj).to respond_to(:message).with(3).arguments

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 71
def argument
  self
end
Also aliased as: arguments
description ()

@api private @return [String]

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 100
def description
  "respond to #{pp_names}#{with_arity}"
end
does_not_match? (actual)

@private

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 82
def does_not_match?(actual)
  find_failing_method_names(actual, :select).empty?
end
failure_message ()

@api private @return [String]

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 88
def failure_message
  "expected #{actual_formatted} to respond to #{@failing_method_names.map { |name| description_of(name) }.join(', ')}#{with_arity}"
end
failure_message_when_negated ()

@api private @return [String]

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 94
def failure_message_when_negated
  failure_message.sub(/to respond to/, 'not to respond to')
end
ignoring_method_signature_failure! ()

@api private Used by other matchers to suppress a check

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 106
def ignoring_method_signature_failure!
  @ignoring_method_signature_failure = true
end
matches? (actual)

@private

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 77
def matches?(actual)
  find_failing_method_names(actual, :reject).empty?
end
with (n)

@api public Specifies the number of expected arguments.

@example

expect(obj).to respond_to(:message).with(3).arguments

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 24
def with(n)
  @expected_arity = n
  self
end
with_any_keywords ()

@api public Specifies that the method accepts any keyword, i.e. the method has

a splatted keyword parameter of the form **kw_args.

@example

expect(obj).to respond_to(:message).with_any_keywords

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 48
def with_any_keywords
  @arbitrary_keywords = true
  self
end
Also aliased as: and_any_keywords
with_keywords (*keywords)

@api public Specifies keyword arguments, if any.

@example

expect(obj).to respond_to(:message).with_keywords(:color, :shape)

@example with an expected number of arguments

expect(obj).to respond_to(:message).with(3).arguments.and_keywords(:color, :shape)

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 36
def with_keywords(*keywords)
  @expected_keywords = keywords
  self
end
Also aliased as: and_keywords
with_unlimited_arguments ()

@api public Specifies that the number of arguments has no upper limit, i.e. the

method has a splatted parameter of the form *args.

@example

expect(obj).to respond_to(:message).with_unlimited_arguments

# File rspec-expectations/lib/rspec/matchers/built_in/respond_to.rb, line 60
def with_unlimited_arguments
  @unlimited_arguments = true
  self
end
Also aliased as: and_unlimited_arguments