Class: RSpec::Matchers::OperatorMatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/rspec/matchers/operator_matcher.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(actual) ⇒ OperatorMatcher

Returns a new instance of OperatorMatcher.



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# File 'lib/rspec/matchers/operator_matcher.rb', line 28

def initialize(actual)
  @actual = actual
end

Class Method Details

.get(klass, operator) ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 18

def get(klass, operator)
  klass.ancestors.each { |ancestor|
    matcher = registry[ancestor] && registry[ancestor][operator]
    return matcher if matcher
  }

  nil
end

.register(klass, operator, matcher) ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 9

def register(klass, operator, matcher)
  registry[klass] ||= {}
  registry[klass][operator] = matcher
end

.registry ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 5

def registry
  @registry ||= {}
end

.unregister(klass, operator) ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 14

def unregister(klass, operator)
  registry[klass] && registry[klass].delete(operator)
end

.use_custom_matcher_or_delegate(operator) ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 32

def self.use_custom_matcher_or_delegate(operator)
  define_method(operator) do |expected|
    if uses_generic_implementation_of?(operator) && matcher = OperatorMatcher.get(@actual.class, operator)
      @actual.__send__(::RSpec::Matchers.last_should, matcher.new(expected))
    else
      eval_match(@actual, operator, expected)
    end
  end

  negative_operator = operator.sub(/^=/, '!')
  if negative_operator != operator && respond_to?(negative_operator)
    define_method(negative_operator) do |expected|
      opposite_should = ::RSpec::Matchers.last_should == :should ? :should_not : :should
      raise "RSpec does not support `#{::RSpec::Matchers.last_should} #{negative_operator} expected`.  " +
        "Use `#{opposite_should} #{operator} expected` instead."
    end
  end
end

Instance Method Details

#description ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 59

def description
  "#{@operator} #{@expected.inspect}"
end

#fail_with_message(message) ⇒ Object 



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# File 'lib/rspec/matchers/operator_matcher.rb', line 55

def fail_with_message(message)
  RSpec::Expectations.fail_with(message, @expected, @actual)
end