Class: RSpec::Matchers::DSL::Matcher

Inherits:
Object
  • Object
show all
Extended by:
Macros, RSpec::Matchers::DSL::Macros::Deprecated
Includes:
RSpec::Matchers, Composable, DefaultImplementations
Defined in:
lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb

Overview

The class used for custom matchers. The block passed to ‘RSpec::Matchers.define` will be evaluated in the context of the singleton class of an instance, and will have the Macros methods available.

Constant Summary

Constants included from Macros

RSpec::Matchers::DSL::Macros::RAISE_NOTIFIER

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Macros

chain, description, diffable, failure_message, failure_message_when_negated, match, match_unless_raises, match_when_negated, supports_block_expectations

Methods included from RSpec::Matchers::DSL::Macros::Deprecated

failure_message_for_should, failure_message_for_should_not, match_for_should, match_for_should_not

Methods included from Composable

#===, #and, #description_of, #or, should_enumerate?, surface_descriptions_in, unreadable_io?, #values_match?

Methods included from RSpec::Matchers

#aggregate_failures, alias_matcher, #all, #be, #be_a, #be_a_kind_of, #be_an_instance_of, #be_between, #be_falsey, #be_nil, #be_truthy, #be_within, #change, clear_generated_description, configuration, #contain_exactly, #cover, define, define_negated_matcher, #end_with, #eq, #eql, #equal, #exist, #expect, generated_description, #have_attributes, #include, last_description, #match, #match_array, #output, #raise_error, #respond_to, #satisfy, #start_with, #throw_symbol, #yield_control, #yield_successive_args, #yield_with_args, #yield_with_no_args

Methods included from RSpec::Matchers::DSL

#alias_matcher, #define, #define_negated_matcher

Methods included from DefaultImplementations

#description, #diffable?, #expects_call_stack_jump?, #supports_block_expectations?, #supports_value_expectations?

Methods included from BuiltIn::BaseMatcher::DefaultFailureMessages

#failure_message, #failure_message_when_negated, has_default_failure_messages?

Constructor Details

#initialize(name, declarations, matcher_execution_context, *expected, &block_arg) ⇒ Matcher

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Matcher.



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 462

def initialize(name, declarations, matcher_execution_context, *expected, &block_arg)
  @name     = name
  @actual   = nil
  @expected_as_array = expected
  @matcher_execution_context = matcher_execution_context
  @chained_method_clauses = []
  @block_arg = block_arg

  klass = class << self
    # See `Macros#define_user_override` above, for an explanation.
    include(@user_method_defs = Module.new)
    self
  end
  RSpec::Support::WithKeywordsWhenNeeded.class_exec(klass, *expected, &declarations)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object (private)

Takes care of forwarding unhandled messages to the ‘@matcher_execution_context` (typically the current running `RSpec::Core::Example`). This is needed by rspec-rails so that it can define matchers that wrap Rails’ test helper methods, but it’s also a useful feature in its own right.



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 532

def method_missing(method, *args, &block)
  if @matcher_execution_context.respond_to?(method)
    @matcher_execution_context.__send__ method, *args, &block
  else
    super(method, *args, &block)
  end
end

Instance Attribute Details

#actual ⇒ Object (readonly)

Exposes the value being matched against – generally the object object wrapped by ‘expect`.



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 449

def actual
  @actual
end

#block_arg ⇒ Object (readonly)

The block parameter used in the expectation



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 456

def block_arg
  @block_arg
end

#expected_as_array ⇒ Object (readonly)

Returns the expected value as an an array. This exists primarily to aid in upgrading from RSpec 2.x, since in RSpec 2, ‘expected` always returned an array.

See Also:



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 494

def expected_as_array
  @expected_as_array
end

#name ⇒ Object (readonly)

The name of the matcher.



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 459

def name
  @name
end

#rescued_exception ⇒ Object (readonly)

Exposes the exception raised during the matching by ‘match_unless_raises`. Could be useful to extract details for a failure message.



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 453

def rescued_exception
  @rescued_exception
end

Instance Method Details

#expected ⇒ Object

Provides the expected value. This will return an array if multiple arguments were passed to the matcher; otherwise it will return a single value.

See Also:



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 482

def expected
  if expected_as_array.size == 1
    expected_as_array[0]
  else
    expected_as_array
  end
end

#inspect ⇒ Object

Adds the name (rather than a cryptic hex number) so we can identify an instance of the matcher in error messages (e.g. for ‘NoMethodError`)



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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 499

def inspect
  "#<#{self.class.name} #{name}>"
end

#respond_to?(method, include_private = false) ⇒ Boolean

:nocov: Indicates that this matcher responds to messages from the ‘@matcher_execution_context` as well.

Returns:

  • (Boolean) 


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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 514

def respond_to?(method, include_private=false)
  super || @matcher_execution_context.respond_to?(method, include_private)
end

#respond_to_missing?(method, include_private = false) ⇒ Boolean

Indicates that this matcher responds to messages from the ‘@matcher_execution_context` as well. Also, supports getting a method object for such methods.

Returns:

  • (Boolean) 


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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/rspec-expectations-3.12.2/lib/rspec/matchers/dsl.rb', line 507

def respond_to_missing?(method, include_private=false)
  super || @matcher_execution_context.respond_to?(method, include_private)
end