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# File 'lib/gems/rspec-1.1.11/lib/spec/expectations/handler.rb', line 25
def handle_matcher(actual, matcher, &block)
::Spec::Matchers.last_should = "should not"
return Spec::Matchers::NegativeOperatorMatcher.new(actual) if matcher.nil?
unless matcher.respond_to?(:matches?)
raise InvalidMatcherError, "Expected a matcher, got #{matcher.inspect}."
end
unless matcher.respond_to?(:negative_failure_message)
Spec::Expectations.fail_with(
<<-EOF
Matcher does not support should_not.
See Spec::Matchers for more information
about matchers.
EOF
)
end
match = matcher.matches?(actual, &block)
::Spec::Matchers.last_matcher = matcher
Spec::Expectations.fail_with(matcher.negative_failure_message) if match
match
end
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