Class: RSpec::Matchers::BuiltIn::ChangeToValue Private

Inherits:
SpecificValuesChange show all
Defined in:
lib/rspec/matchers/built_in/change.rb

Overview

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

Used to specify a change to a specific value (and, optionally, from a specific value).

Constant Summary

Constant Summary

Constants inherited from BaseMatcher

BaseMatcher::UNDEFINED

Instance Method Summary (collapse)

Methods inherited from BaseMatcher

#description, #diffable?, #expects_call_stack_jump?, #match_unless_raises, #matches?, #supports_block_expectations?

Methods included from BaseMatcher::DefaultFailureMessages

#failure_message, #failure_message_when_negated

Methods included from Composable

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

Constructor Details

- (ChangeToValue) initialize(change_details, expected_after)

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 ChangeToValue

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# File 'lib/rspec/matchers/built_in/change.rb', line 287
def initialize(change_details, expected_after)
  @description_suffix = nil
  super(change_details, MATCH_ANYTHING, expected_after)
end

Instance Method Details

- (Object) from(value)

Specifies the original value.

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# File 'lib/rspec/matchers/built_in/change.rb', line 294
def from(value)
  @expected_before    = value
  @description_suffix = " from #{description_of value}"
  self
end