Class: StringRule

Inherits:
Rule
  • Object
show all
Defined in:
lib/rules/string_rule.rb

Instance Attribute Summary collapse

Attributes inherited from Rule

#type

Instance Method Summary collapse

Constructor Details

#initialize ⇒ StringRule

Returns a new instance of StringRule.



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# File 'lib/rules/string_rule.rb', line 8

def initialize()

  @type = :string
  @min_length = nil
  @max_length = nil

end

Instance Attribute Details

#max_length ⇒ Object

Returns the value of attribute max_length.



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# File 'lib/rules/string_rule.rb', line 6

def max_length
  @max_length
end

#min_length ⇒ Object

Returns the value of attribute min_length.



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# File 'lib/rules/string_rule.rb', line 5

def min_length
  @min_length
end

Instance Method Details

#random ⇒ Object 



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# File 'lib/rules/string_rule.rb', line 58

def random()

  # Build alphabet soup.
  alpha_numeric = Array('A'..'Z') + Array('a'..'z')
  10.times do
    alpha_numeric << ' '
  end

  # Dip ladle into alphabet soup.
  last_char = nil
  sentence = Array.new(rand(@min_length..@max_length)) do |index|
    char = alpha_numeric.sample
    # Put no character next to the same character twice.
    while char == last_char
      char = alpha_numeric.sample
    end
    last_char = char
  end

  return sentence.join

end

#result ⇒ Object 



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# File 'lib/rules/string_rule.rb', line 50

def result()
  {
    :type => @type,
    :min_length => @min_length,
    :max_length => @max_length
  }
end

#test(value) ⇒ Object

Parameters:

  • value (String) 


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# File 'lib/rules/string_rule.rb', line 40

def test(value)

  length = value.length

  return false if length < @min_length
  return false if length > @max_length

  true
end

#train(meta) ⇒ Object

Parameters:



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# File 'lib/rules/string_rule.rb', line 19

def train(meta)

  length = meta[:length]

  if @min_length.nil?
    @min_length = length
  else
    @min_length = length if length < @min_length
  end

  if @max_length.nil?
    @max_length = length
  else
    @max_length = length if length > @max_length
  end

end