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Class: RSpec::Matchers::BuiltIn::BePredicate Private

Do not use. This class is for internal use only.

Overview

Provides the implementation of be_. Not intended to be instantiated directly.

Constant Summary

BaseMatcher - Inherited

UNDEFINED

Class Method Summary

DynamicPredicate - Inherited

.new

BaseMatcher - Inherited

.matcher_name, .new,
.underscore

Borrowed from ActiveSupport.

Instance Attribute Summary

DynamicPredicate - Inherited

#predicate_accessible?,
#private_predicate?

:nocov:

BaseMatcher - Inherited

#actual,
#diffable?

::RSpec::Matchers are not diffable by default.
#expected, #expects_call_stack_jump?, #matcher_name, #matcher_name=, #rescued_exception,
#supports_block_expectations?

Most matchers are value matchers (i.e. meant to work with ‘expect(value)`) rather than block matchers (i.e. meant to work with `expect { }`), so this defaults to false.
#supports_value_expectations?

BaseMatcher::StringEncodingFormatting - Included

#string_encoding_differs?

:nocov:

Instance Method Summary

DynamicPredicate - Inherited

#description, #does_not_match?, #failure_message, #failure_message_when_negated, #matches?, #expectation_of, #failure_message_expecting, #failure_to_respond_explanation, #method_description,
#methods_include?

See additional method definition at line 79.
#predicate_matches?, #predicate_method_name, #predicate_result,
#really_responds_to?

:nocov:
#root, #validity_message

BeHelpers - Included

#args_to_s, #args_to_sentence, #expected_to_sentence, #inspected_args, #parenthesize

BaseMatcher - Inherited

#actual_formatted,
#description

Generates a description using ::RSpec::Matchers::EnglishPhrasing.
#expected_formatted,
#match_unless_raises

Used to wrap a block of code that will indicate failure by raising one of the named exceptions.
#matches?

Indicates if the match is successful.

BaseMatcher::DefaultFailureMessages - Included

#failure_message

Provides a good generic failure message.
#failure_message_when_negated

Provides a good generic negative failure message.

BaseMatcher::StringEncodingFormatting - Included

#format_encoding

Formats a String’s encoding as a human readable string :nocov:

BaseMatcher::HashFormatting - Included

#improve_hash_formatting

‘{ :a => 5, :b => 2 }.inspect` produces:

::RSpec::Matchers::Composable - Included

#&

Alias for Composable#and.
#===

Delegates to #matches?.
#and

Creates a compound and expectation.
#description_of

Returns the description of the given object in a way that is aware of composed matchers.
#or

Creates a compound or expectation.
#values_match?

This provides a generic way to fuzzy-match an expected value against an actual value.
#|

Alias for Composable#or.
#should_enumerate?

We should enumerate arrays as long as they are not recursive.
#surface_descriptions_in

Transforms the given data structure (typically a hash or array) into a new data structure that, when #inspect is called on it, will provide descriptions of any contained matchers rather than the normal #inspect output.
#unreadable_io?,
#with_matchers_cloned

Historically, a single matcher instance was only checked against a single value.

Instance Attribute Details

#predicate_accessible? ⇒ Boolean (readonly, private)

[ GitHub ] 

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/has.rb', line 184



def predicate_accessible?
  super || really_responds_to?(present_tense_predicate)
end


  







Instance Method Details



  

    #failure_to_respond_explanation   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/has.rb', line 176



def failure_to_respond_explanation
  super || if predicate == :true?
             " or perhaps you meant `be true` or `be_truthy`"
           elsif predicate == :false?
             " or perhaps you meant `be false` or `be_falsey`"
           end
end


  








  

    #predicate   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/has.rb', line 168



def predicate
  @predicate ||= :"#{root}?"
end


  








  

    #predicate_method_name   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/has.rb', line 172



def predicate_method_name
  actual.respond_to?(predicate) ? predicate : present_tense_predicate
end


  








  

    #present_tense_predicate   (private)
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/matchers/built_in/has.rb', line 188



def present_tense_predicate
  :"#{root}s?"
end