Module: Split::CombinedExperimentsHelper

Defined in:
lib/split/combined_experiments_helper.rb

Instance Method Summary collapse

Instance Method Details

#ab_combined_test(metric_descriptor, control = nil, *alternatives) ⇒ Object

Raises:



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# File 'lib/split/combined_experiments_helper.rb', line 4

def ab_combined_test(metric_descriptor, control = nil, *alternatives)
  return nil unless experiment = find_combined_experiment(metric_descriptor)
  raise(Split::InvalidExperimentsFormatError, "Unable to find experiment #{metric_descriptor} in configuration") if experiment[:combined_experiments].nil?

  alternative = nil
  weighted_alternatives = nil
  experiment[:combined_experiments].each do |combined_experiment|
    if alternative.nil?
      if control
        alternative = ab_test(combined_experiment, control, alternatives)
      else
        normalized_alternatives = Split::Configuration.new.normalize_alternatives(experiment[:alternatives])
        alternative = ab_test(combined_experiment, normalized_alternatives[0], *normalized_alternatives[1])
      end
    else
      weighted_alternatives ||= experiment[:alternatives].each_with_object({}) do |alt, memo|
        alt = Alternative.new(alt, experiment[:name]).name
        memo[alt] = (alt == alternative ? 1 : 0)
      end

      ab_test(combined_experiment, [weighted_alternatives])
    end
  end
  alternative
end

#find_combined_experiment(metric_descriptor) ⇒ Object

Raises:



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# File 'lib/split/combined_experiments_helper.rb', line 30

def find_combined_experiment(metric_descriptor)
  raise(Split::InvalidExperimentsFormatError, 'Invalid descriptor class (String or Symbol required)') unless metric_descriptor.class == String || metric_descriptor.class == Symbol
  raise(Split::InvalidExperimentsFormatError, 'Enable configuration') unless Split.configuration.enabled
  raise(Split::InvalidExperimentsFormatError, 'Enable `allow_multiple_experiments`') unless Split.configuration.allow_multiple_experiments
  Split::configuration.experiments[metric_descriptor.to_sym]
end