Class: RSpec::Bisect::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/rspec/bisect/runner.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(reporter: reporter, result_parser: result_parser) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/rspec/bisect/runner.rb', line 11

def initialize(reporter: reporter, result_parser: result_parser)
  self.reporter = reporter
  self.result_parser = result_parser
end

Instance Attribute Details

#reporter ⇒ Object

Returns the value of attribute reporter.



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# File 'lib/rspec/bisect/runner.rb', line 8

def reporter
  @reporter
end

#result_parser ⇒ Object

Returns the value of attribute result_parser.



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# File 'lib/rspec/bisect/runner.rb', line 8

def result_parser
  @result_parser
end

Instance Method Details

#examples_as_rspec_params(examples) ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 50

def examples_as_rspec_params(examples)
  examples.map { |e| "#{e['file_path']}:#{e['line_number']}" }.join ' '
end

#execute! ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 16

def execute!
  @options = {}
  def options
    @options
  end

  OptionParser.new do |opts|
    opts.banner = 'Usage: rspec-bisect [options]'

    opts.on('-s', '--seed N', Integer, 'Seed that causes order dependencies') do |s|
      options[:seed] = s
    end

    opts.on('--help', 'Show this message') do
      puts opts
      exit
    end
  end.parse!

  reporter.seed options[:seed]

  def rspec_seed_argument
    options[:seed].nil? ? '' : "--seed #{options[:seed]}"
  end

  result = Result.new `rspec --format json #{rspec_seed_argument}`
  parsed = result.as_json

  examples = parsed['examples']
  failure_count = parsed['summary']['failure_count']
  reporter.failing_tests failure_count

  failing_examples = examples.select { |e| e['status'] == 'failed' }

  def examples_as_rspec_params(examples)
    examples.map { |e| "#{e['file_path']}:#{e['line_number']}" }.join ' '
  end

  def run_examples_command(examples)
    "rspec #{examples_as_rspec_params(examples)} #{rspec_seed_argument}"
  end

  def run_examples(examples)
    `#{run_examples_command(examples)}`
  end

  def last_command_passed?
    $?.exitstatus == 0
  end

  def last_command_failed?
    not last_command_passed?
  end

  def progress_bar(additional_options)
    ProgressBar.create({format: '%t |%w>%i| %c/%C |%e'}.merge(additional_options))
  end

  dependent_examples_progress = progress_bar title: 'Detecting Dependent Examples',
                                             total: failing_examples.size

  order_dependent_examples = failing_examples.select do |example|
    run_examples([example])
    passed = last_command_passed?
    dependent_examples_progress.increment
    passed
  end

  reporter.order_dependent_examples order_dependent_examples

  order_dependent_examples.each do |example|
    reporter.determining_culprits example

    culprit_progress = progress_bar title: 'Determining culprits',
                                    total: nil,
                                    format: '%t |%i| %c potential culprits'

    culprits = examples.take_while do |e|
      example['file_path'] != e['file_path'] ||
          example['line_number'] != e['line_number']
    end

    culprit_progress.progress = culprits.size

    culprit_count_theory = 1
    while culprits.size > culprit_count_theory
      found_useless_group = false
      culprits.each_slice(culprits.size / (culprit_count_theory + 1)) do |excluded_culprits|
        culprit_progress.progress = culprits.size

        culprit_group = culprits - excluded_culprits
        run_examples culprit_group + [example]

        culprit_progress.progress = culprits.size
        if last_command_failed?
          culprits = culprit_group

          found_useless_group = true
          break
        end
      end

      culprit_count_theory += 1 unless found_useless_group
    end

    culprit_progress.stop

    reporter.culprits culprits, example

    reporter.report_failure run_examples_command culprits + [example]
  end
end

#last_command_failed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rspec/bisect/runner.rb', line 66

def last_command_failed?
  not last_command_passed?
end

#last_command_passed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rspec/bisect/runner.rb', line 62

def last_command_passed?
  $?.exitstatus == 0
end

#options ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 18

def options
  @options
end

#progress_bar(additional_options) ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 70

def progress_bar(additional_options)
  ProgressBar.create({format: '%t |%w>%i| %c/%C |%e'}.merge(additional_options))
end

#rspec_seed_argument ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 37

def rspec_seed_argument
  options[:seed].nil? ? '' : "--seed #{options[:seed]}"
end

#run_examples(examples) ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 58

def run_examples(examples)
  `#{run_examples_command(examples)}`
end

#run_examples_command(examples) ⇒ Object 



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# File 'lib/rspec/bisect/runner.rb', line 54

def run_examples_command(examples)
  "rspec #{examples_as_rspec_params(examples)} #{rspec_seed_argument}"
end