Class: Datadog::CI::TestOptimisation::SkippablePercentage::Calculator

Inherits:
Base
  • Object
show all
Defined in:
lib/datadog/ci/test_optimisation/skippable_percentage/calculator.rb

Overview

This class calculates the percentage of tests that are going to be skipped in the next run without actually running the tests.

It is useful to determine the number of parallel jobs that are required for the CI pipeline.

NOTE: Only RSpec is supported at the moment.

Instance Attribute Summary

Attributes inherited from Base

#failed

Instance Method Summary collapse

Constructor Details

#initialize(rspec_cli_options: [], verbose: false, spec_path: "spec") ⇒ Calculator

Returns a new instance of Calculator.



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# File 'lib/datadog/ci/test_optimisation/skippable_percentage/calculator.rb', line 16

def initialize(rspec_cli_options: [], verbose: false, spec_path: "spec")
  super(verbose: verbose, spec_path: spec_path)

  @rspec_cli_options = rspec_cli_options || []
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/datadog/ci/test_optimisation/skippable_percentage/calculator.rb', line 22

def call
  return 0.0 if @failed

  require_rspec!
  return 0.0 if @failed

  configure_datadog

  exit_code = dry_run
  if exit_code != 0
    Datadog.logger.error("RSpec dry-run failed with exit code #{exit_code}")
    @failed = true
    return 0.0
  end

  log("Total tests count: #{test_optimisation.total_tests_count}")
  log("Skipped tests count: #{test_optimisation.skipped_tests_count}")
  validate_test_optimisation_state!

  (test_optimisation.skipped_tests_count.to_f / test_optimisation.total_tests_count.to_f).floor(2)
end