Class: RSpec::Matchers::BuiltIn::Change Private

Inherits:
BaseMatcher 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.

Provides the implementation for change. Not intended to be instantiated directly.

Constant Summary

Constant Summary

Constants inherited from BaseMatcher

BaseMatcher::UNDEFINED

Instance Method Summary (collapse)

Methods inherited from BaseMatcher

#diffable?, #expects_call_stack_jump?, #match_unless_raises

Methods included from Composable

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

Instance Method Details

- (Object) by(expected_delta)

Specifies the delta of the expected change.

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# File 'lib/rspec/matchers/built_in/change.rb', line 10
def by(expected_delta)
  ChangeRelatively.new(change_details, expected_delta, :by) do |actual_delta|
    values_match?(expected_delta, actual_delta)
  end
end

- (Object) by_at_least(minimum)

Specifies a minimum delta of the expected change.

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# File 'lib/rspec/matchers/built_in/change.rb', line 18
def by_at_least(minimum)
  ChangeRelatively.new(change_details, minimum, :by_at_least) do |actual_delta|
    actual_delta >= minimum
  end
end

- (Object) by_at_most(maximum)

Specifies a maximum delta of the expected change.

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# File 'lib/rspec/matchers/built_in/change.rb', line 26
def by_at_most(maximum)
  ChangeRelatively.new(change_details, maximum, :by_at_most) do |actual_delta|
    actual_delta <= maximum
  end
end

- (String) description

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:

  • (String) 
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# File 'lib/rspec/matchers/built_in/change.rb', line 74
def description
  "change #{change_details.value_representation}"
end

- (Boolean) does_not_match?(event_proc)

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:

  • (Boolean) 
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# File 'lib/rspec/matchers/built_in/change.rb', line 53
def does_not_match?(event_proc)
  raise_block_syntax_error if block_given?
  !matches?(event_proc) && Proc === event_proc
end

- (String) failure_message

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:

  • (String) 
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# File 'lib/rspec/matchers/built_in/change.rb', line 60
def failure_message
  "expected #{change_details.value_representation} to have changed, " \
  "but #{positive_failure_reason}"
end

- (String) failure_message_when_negated

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:

  • (String) 
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# File 'lib/rspec/matchers/built_in/change.rb', line 67
def failure_message_when_negated
  "expected #{change_details.value_representation} not to have changed, " \
  "but #{negative_failure_reason}"
end

- (Object) from(value)

Specifies the original value.

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# File 'lib/rspec/matchers/built_in/change.rb', line 40
def from(value)
  ChangeFromValue.new(change_details, value)
end

- (Object) to(value)

Specifies the new value you expect.

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# File 'lib/rspec/matchers/built_in/change.rb', line 34
def to(value)
  ChangeToValue.new(change_details, value)
end