Class: MockSuey::MockContract

Inherits:
Object
  • Object
show all
Defined in:
lib/mock_suey/mock_contract.rb

Defined Under Namespace

Classes: Error, NoMatchingMethodCalls, NoMatchingReturnType, NoMethodCalls

Constant Summary collapse

ANYTHING = 
Object.new.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(receiver_class:, method_name:, args_pattern:, return_type:) ⇒ MockContract

Returns a new instance of MockContract.



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# File 'lib/mock_suey/mock_contract.rb', line 99

def initialize(receiver_class:, method_name:, args_pattern:, return_type:)
  @receiver_class = receiver_class
  @method_name = method_name
  @args_pattern = args_pattern
  @return_type = return_type
end

Instance Attribute Details

#args_pattern ⇒ Object (readonly)

Returns the value of attribute args_pattern.



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# File 'lib/mock_suey/mock_contract.rb', line 96

def args_pattern
  @args_pattern
end

#method_name ⇒ Object (readonly)

Returns the value of attribute method_name.



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# File 'lib/mock_suey/mock_contract.rb', line 96

def method_name
  @method_name
end

#receiver_class ⇒ Object (readonly)

Returns the value of attribute receiver_class.



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# File 'lib/mock_suey/mock_contract.rb', line 96

def receiver_class
  @receiver_class
end

#return_type ⇒ Object (readonly)

Returns the value of attribute return_type.



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# File 'lib/mock_suey/mock_contract.rb', line 96

def return_type
  @return_type
end

Class Method Details

.contractable_arg?(val) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mock_suey/mock_contract.rb', line 83

def self.contractable_arg?(val)
  case val
  when TrueClass, FalseClass, Numeric, String, Regexp, NilClass
    true
  when Array
    val.all? { |v| contractable_arg?(v) }
  when Hash
    contractable_arg?(val.values)
  else
    false
  end
end

.from_stub(call_obj) ⇒ Object 



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# File 'lib/mock_suey/mock_contract.rb', line 68

def self.from_stub(call_obj)
  call_obj => {receiver_class:, method_name:, return_value:}

  args_pattern = call_obj.arguments.map do
    contractable_arg?(_1) ? _1 : ANYTHING
  end

  new(
    receiver_class:,
    method_name:,
    args_pattern:,
    return_type: return_value.class
  )
end

Instance Method Details

#inspect ⇒ Object 



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# File 'lib/mock_suey/mock_contract.rb', line 129

def inspect
  args_pattern.map do
    (_1 == ANYTHING) ? "_" : _1.inspect
  end.join(", ").then do |args_desc|
    "#{method_desc}: (#{args_desc}) -> #{return_type}"
  end
end

#method_desc ⇒ Object 



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# File 'lib/mock_suey/mock_contract.rb', line 123

def method_desc
  delimeter = receiver_class.singleton_class? ? "." : "#"

  "#{receiver_class.instance_class_name}#{delimeter}#{method_name}"
end

#noop? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mock_suey/mock_contract.rb', line 121

def noop? = args_pattern.all? { _1 == ANYTHING }

#verify!(calls) ⇒ Object

Raises:



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# File 'lib/mock_suey/mock_contract.rb', line 106

def verify!(calls)
  return if noop?

  raise NoMethodCalls.new(self) if calls.nil? || calls.empty?

  matching_input_calls = calls.select { matching_args?(_1) }
  raise NoMatchingMethodCalls.new(self, calls) if matching_input_calls.empty?

  matching_input_calls.each do
    return if _1.return_value.class <= return_type
  end

  raise NoMatchingReturnType.new(self, matching_input_calls)
end