Class: Spectre::Assertion::Evaluation

Inherits:
Object
  • Object
show all
Defined in:
lib/spectre/assertion.rb

Constant Summary collapse

@@location_cache = 
{}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(call_location, actual, expected, method, predicate, negate: false) ⇒ Evaluation

Returns a new instance of Evaluation.



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# File 'lib/spectre/assertion.rb', line 66

def initialize call_location, actual, expected, method, predicate, negate: false
  @call_location = call_location
  @actual = actual
  @expected = ValueWrapper.wrap(expected)
  @predicate = predicate
  @negate = negate
  @failure = nil

  # Maybe not the most elegant way, but it works for now
  # as long as the `.to` call is on the same line as the variable
  location = call_location
    .find { |x| x.label.include? 'Spectre::Engine#load_files' or x.base_label == '<top (required)>' }

  path = location.path

  if @@location_cache.key?(path)
    file_content = @@location_cache[path]
  else
    file_content = File.read(path)
    @@location_cache[path] = file_content
  end

  @var_name = file_content
    .lines[location.lineno - 1]
    .strip
    .match(/[\s(]([^\s]+|\[.*\]|{.*})\.(to|not_to)[\s(]/)
    .captures
    .first
    .strip

  @repr = @var_name
  @repr += ' not' if @negate
  @repr += " to #{method}"
  @repr += expected.nil? ? ' empty' : " #{@expected}"

  success = @expected.evaluate?(@predicate, @actual, @negate)

  return if success

  @failure = if @negate
               'it does not'
             else
               "got #{@actual.inspect}"
             end
end

Instance Attribute Details

#actual ⇒ Object (readonly)

Returns the value of attribute actual.



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# File 'lib/spectre/assertion.rb', line 64

def actual
  @actual
end

#call_location ⇒ Object (readonly)

Returns the value of attribute call_location.



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# File 'lib/spectre/assertion.rb', line 64

def call_location
  @call_location
end

#desc ⇒ Object (readonly)

Returns the value of attribute desc.



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# File 'lib/spectre/assertion.rb', line 64

def desc
  @desc
end

#expected ⇒ Object (readonly)

Returns the value of attribute expected.



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# File 'lib/spectre/assertion.rb', line 64

def expected
  @expected
end

#failure ⇒ Object (readonly)

Returns the value of attribute failure.



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# File 'lib/spectre/assertion.rb', line 64

def failure
  @failure
end

#method ⇒ Object (readonly)

Returns the value of attribute method.



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# File 'lib/spectre/assertion.rb', line 64

def method
  @method
end

#negate ⇒ Object (readonly)

Returns the value of attribute negate.



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# File 'lib/spectre/assertion.rb', line 64

def negate
  @negate
end

Instance Method Details

#to_s ⇒ Object

:nodoc:



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# File 'lib/spectre/assertion.rb', line 113

def to_s
  @repr
end