@api private Provides the implementation for `be_nil`. Not intended to be instantiated directly.
@api private @return [String]
# File lib/rspec/matchers/built_in/be.rb, line 56 def failure_message "expected: nil\n got: #{actual_formatted}" end
@api private @return [String]
# File lib/rspec/matchers/built_in/be.rb, line 62 def failure_message_when_negated "expected: not nil\n got: nil" end
# File lib/rspec/matchers/built_in/be.rb, line 68 def match(_, actual) actual.nil? end