Class: Assertion::Inverter

Inherits:

Object

• Object
• Assertion::Inverter

Includes:

DSL::Caller

Defined in:

lib/assertion/inverter.rb

Overview

Builds inversions for instances of some ‘Assertion::Base` subclass

Examples:

IsAdult = Assertion.about :name, :age do
  age >= 18
end

joe = OpenStruct.new(name: "Joe", age: 40)

child = Inverter.new(IsAdult)
child[name: "Joe"].validate!
# => #<Assertion::InvalidError @messages=["Joe is an adult (age 40)"]>

Instance Attribute Summary

• #source ⇒ Class readonly

  The ‘Assertion::Base` sublcass to build negators for.

Class Method Summary

• .initialize(source) ⇒ Object
• .new(hash = {}) ⇒ Assertion::Inverter::Inversion

  Initializes a [#source] object and builds a negator for it.

Methods included from DSL::Caller

#[]

Instance Attribute Details

#source ⇒ Class (readonly)

Returns The ‘Assertion::Base` sublcass to build negators for.

Returns:

• (Class) —

  The ‘Assertion::Base` sublcass to build negators for

# File 'lib/assertion/inverter.rb', line 26

def source
  @source
end

Class Method Details

.initialize(source) ⇒ Object

# File 'lib/assertion/inverter.rb', line 37

def initialize(source)
  @source = source
  IceNine.deep_freeze(self)
end

.new(hash = {}) ⇒ Assertion::Inverter::Inversion

Initializes a [#source] object and builds a negator for it

Parameters:

• hash (Hash) (defaults to: {}) —

  The hash of attributes to apply the assertion to

Returns:

• (Assertion::Inverter::Inversion)

# File 'lib/assertion/inverter.rb', line 28