Module: Mock

Defined in:
lib/mspec/mocks/mock.rb

Class Method Summary collapse

Class Method Details

.cleanup ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 141

def self.cleanup
  symbols = mocks.keys + stubs.keys
  symbols.uniq.each do |replaced, obj, sym|
    meta = class << obj; self; end

    if meta.instance_methods.include?(replaced.to_s)
      meta.__send__ :alias_method, sym.to_sym, replaced
      meta.__send__ :remove_method, replaced
    else
      meta.__send__ :remove_method, sym.to_sym
    end
  end
  reset
end

.install_method(obj, sym, type = nil) ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 28

def self.install_method(obj, sym, type=nil)
  meta = class << obj; self; end

  key = replaced_key obj, sym
  if (sym.to_sym == :respond_to? or obj.respond_to?(sym)) and !replaced?(key)
    meta.__send__ :alias_method, key.first, sym.to_sym
  end

  meta.class_eval <<-END
    def #{sym}(*args, &block)
      Mock.verify_call self, :#{sym}, *args, &block
    end
  END

  proxy = MockProxy.new type

  if proxy.mock?
    MSpec.expectation
    MSpec.actions :expectation, MSpec.current.state
  end

  if proxy.stub?
    stubs[key].unshift proxy
  else
    mocks[key] << proxy
  end

  proxy
end

.mocks ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 8

def self.mocks
  @mocks ||= Hash.new { |h,k| h[k] = [] }
end

.name_or_inspect(obj) ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 58

def self.name_or_inspect(obj)
  obj.instance_variable_get(:@name) || obj.inspect
end

.replaced?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mspec/mocks/mock.rb', line 24

def self.replaced?(key)
  !!(mocks.keys + stubs.keys).find { |k| k.first == key.first }
end

.replaced_key(obj, sym) ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 20

def self.replaced_key(obj, sym)
  [replaced_name(obj, sym), obj, sym]
end

.replaced_name(obj, sym) ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 16

def self.replaced_name(obj, sym)
  :"__ms_#{obj.__id__}_#{sym}__"
end

.reset ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 4

def self.reset
  @mocks = @stubs = nil
end

.stubs ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 12

def self.stubs
  @stubs ||= Hash.new { |h,k| h[k] = [] }
end

.verify_call(obj, sym, *args, &block) ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 89

def self.verify_call(obj, sym, *args, &block)
  compare = *args
  if RUBY_VERSION >= '1.9'
    compare = compare.first if compare.length <= 1
  end

  key = replaced_key obj, sym
  proxies = mocks[key] + stubs[key]
  proxies.each do |proxy|
    pass = case proxy.arguments
    when :any_args
      true
    when :no_args
      compare.nil?
    else
      proxy.arguments == compare
    end

    if proxy.yielding?
      if block
        proxy.yielding.each do |args_to_yield|
          if block.arity == -1 || block.arity == args_to_yield.size
            block.call(*args_to_yield)
          else
            Expectation.fail_with(
              "Mock '#{name_or_inspect obj}' asked to yield " \
              "|#{proxy.yielding.join(', ')}| on #{sym}\n",
              "but a block with arity #{block.arity} was passed")
          end
        end
      else
        Expectation.fail_with(
          "Mock '#{name_or_inspect obj}' asked to yield " \
          "|[#{proxy.yielding.join('], [')}]| on #{sym}\n",
          "but no block was passed")
      end
    end

    if pass
      proxy.called
      return proxy.returning
    end
  end

  if sym.to_sym == :respond_to?
    return obj.__send__(replaced_name(obj, sym), compare)
  else
    Expectation.fail_with("Mock '#{name_or_inspect obj}': method #{sym}\n",
                          "called with unexpected arguments (#{Array(compare).join(' ')})")
  end
end

.verify_count ⇒ Object 



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# File 'lib/mspec/mocks/mock.rb', line 62

def self.verify_count
  mocks.each do |key, proxies|
    replaced, obj, sym = *key
    proxies.each do |proxy|
      qualifier, count = proxy.count
      pass = case qualifier
      when :at_least
        proxy.calls >= count
      when :at_most
        proxy.calls <= count
      when :exactly
        proxy.calls == count
      when :any_number_of_times
        true
      else
        false
      end
      unless pass
        Expectation.fail_with(
          "Mock '#{name_or_inspect obj}' expected to receive '#{sym}' " \
          "#{qualifier.to_s.sub('_', ' ')} #{count} times",
          "but received it #{proxy.calls} times")
      end
    end
  end
end