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Class: RSpec::Expectations::BlockExpectationTarget Private

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ExpectationTarget
Instance Chain:
self, ExpectationTarget, ExpectationTarget::InstanceMethods
Inherits: RSpec::Expectations::ExpectationTarget
Defined in: rspec-expectations/lib/rspec/expectations/expectation_target.rb

Overview

Validates the provided matcher to ensure it supports block expectations, in order to avoid user confusion when they use a block thinking the expectation will be on the return value of the block rather than the block itself.

Constant Summary

ExpectationTarget - Inherited

UndefinedValue

Class Method Summary

ExpectationTarget - Inherited

.for, .new

Instance Attribute Summary

ExpectationTarget - Inherited

#target

Instance Method Summary

ExpectationTarget::InstanceMethods - Included

#not_to

Runs the given expectation, passing if ‘matcher` returns false.
#to

Runs the given expectation, passing if ‘matcher` returns true.
#to_not

Alias for ExpectationTarget::InstanceMethods#not_to.
#prevent_operator_matchers

Instance Method Details

#enforce_block_expectation(matcher) (private)

Raises:

[ GitHub ] 

  


# File 'rspec-expectations/lib/rspec/expectations/expectation_target.rb', line 150



def enforce_block_expectation(matcher)
  return if supports_block_expectations?(matcher)

  raise ExpectationNotMetError, "You must pass an argument rather than a block to `expect` to use the provided " \
    "matcher (#{RSpec::Support::ObjectFormatter.format(matcher)}), or the matcher must implement " \
    "`supports_block_expectations?`."
end


  








  

    #not_to(matcher, message = nil, &block)  
    Also known as: #to_not
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/expectations/expectation_target.rb', line 142



def not_to(matcher, message=nil, &block)
  enforce_block_expectation(matcher)
  super
end


  








  

    #supports_block_expectations?(matcher)  ⇒ Boolean  (private)
  



  

    
  





  


  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/expectations/expectation_target.rb', line 158



def supports_block_expectations?(matcher)
  matcher.respond_to?(:supports_block_expectations?) && matcher.supports_block_expectations?
end


  








  

    #to(matcher, message = nil, &block)  
  

  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/expectations/expectation_target.rb', line 137



def to(matcher, message=nil, &block)
  enforce_block_expectation(matcher)
  super
end


  








  

    #to_not(matcher, message = nil, &block)  
  



  

    

Alias for #not_to.


  



  [ GitHub ]


  

  


# File 'rspec-expectations/lib/rspec/expectations/expectation_target.rb', line 146



alias to_not not_to