Class: MacSpec::MockingFramework::MessageExpectation

Inherits:
Object
  • Object
show all
Defined in:
lib/mac_spec/mocking_framework/message_expectation.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ MessageExpectation

Returns a new instance of MessageExpectation.



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 6

def initialize(options)
  @receiver          = options[:receiver]
  @msg               = options[:msg]
  @positive          = options[:positive]
  @stub              = options[:stub]
  @stub_return_value = options[:stub_return_value]
  
  @unique_alias = "__macspec__alias_for_#{@msg}".to_sym
  me = self
  if respond_to?(@msg) && !respond_to?(@unique_alias)
    # todo refactor to singletonclass.instance_eval
    (class<<@receiver;self;end).send(:alias_method, @unique_alias, @msg)
    (class<<@receiver;self;end).send(:define_method, @msg) do |*args|
      received_args = args == [] ? nil : args
      me.received_with_args!(received_args)
      me.return_value_for_args(received_args)
    end
  elsif !respond_to?(@msg) && !respond_to?(@unique_alias)
     (class<<@receiver;self;end).send(:define_method, me.msg) do |*args|
       received_args = args == [] ? nil : args

       me.received_with_args!(received_args)
       me.return_value_for_args(received_args)
     end
  else
    # 
  end
  MessageExpectation.register_for_verification(@receiver)
  @return_value = {:__macspec_anyargs => true}
  @received = {}
  @args_expectation = :__macspec_anyargs
end

Instance Attribute Details

#msg ⇒ Object (readonly)

Returns the value of attribute msg.



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 5

def msg
  @msg
end

#return_value ⇒ Object (readonly)

Returns the value of attribute return_value.



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 5

def return_value
  @return_value
end

#unique_alias ⇒ Object (readonly)

Returns the value of attribute unique_alias.



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 5

def unique_alias
  @unique_alias
end

Class Method Details

.register ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 43

def self.register
  @register
end

.register_for_verification(obj) ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 39

def self.register_for_verification(obj)
  @register << obj
end

.verify ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 47

def self.verify
  begin
    @register.uniq.each do |obj|
      obj && obj.__macspec__verify
    end
  ensure
    @register = []
  end
end

Instance Method Details

#and_return(value) ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 120

def and_return(value)
  unless stub? || negative?
    @return_value[@args_expectation] = value
    self
  end
end

#negative? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 90

def negative?
  !@positive
end

#received_with_args!(args) ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 94

def received_with_args!(args)
  @received[args] = true unless args == nil
  @received[:__macspec_anyargs] = true
  @return_value[:__macspec_anyargs] ||= true
end

#return_value_for_args(args) ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 100

def return_value_for_args(args)
  return @stub_return_value if stub?
  args ||= :__macspec_anyargs
  received_args = @return_value.keys
  unless received_args.include?(args) || received_args.include?(:__macspec_anyargs)
    args_string = args == :__macspec_anyargs ? "No Args" : args
    err_msg = "Wrong Argument(s): '#{args_string}' For message '#{msg}'. Receiver: '#{@receiver}'"
    MacSpec.flunk err_msg
  end
  @return_value[args]
end

#stub? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 86

def stub?
  @stub
end

#verify ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 57

def verify
  unless self.stub?
    @return_value.each do |args,value|
      args_string = (args == :__macspec_anyargs) ? "Any Args" : args.inspect
      if (@received[args] && @positive) || (!@received[args] && !@positive)
        
        MacSpec.assert(true)
      elsif (!@received[args] && @positive)
        received_with_args_string = if !@received.keys.include?(:__macspec_anyargs) 
           "not at all."
         else
           @received.delete(:__macspec_anyargs)
           "#{@received.keys}"
         end
          
        err_msg = """
        '#{@receiver}' should have received '#{msg}' with '#{args_string}'.
        But received it #{received_with_args_string}
        """
        MacSpec.flunk err_msg
      elsif (@received[args] && !@positive)
        err_msg = "'#{@receiver}' should *not* have received '#{msg}' with '#{args_string}'."
        MacSpec.flunk err_msg
      end
    end
  end
  @return_value = {}
end

#with(*args) ⇒ Object 



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# File 'lib/mac_spec/mocking_framework/message_expectation.rb', line 112

def with(*args)
  unless stub?
    @args_expectation = args
    @return_value[@args_expectation] = nil
    self
  end
end