Class: KnapsackPro::TestCaseDetectors::RSpecTestExampleDetector

Inherits:
Object
  • Object
show all
Defined in:
lib/knapsack_pro/test_case_detectors/rspec_test_example_detector.rb

Instance Method Summary collapse

Instance Method Details

#generate_json_report ⇒ Object 



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# File 'lib/knapsack_pro/test_case_detectors/rspec_test_example_detector.rb', line 6

def generate_json_report
  require 'rspec/core'

  cli_format =
    if Gem::Version.new(::RSpec::Core::Version::STRING) < Gem::Version.new('3.6.0')
      require_relative '../formatters/rspec_json_formatter'
      ['--format', KnapsackPro::Formatters::RSpecJsonFormatter.to_s]
    else
      ['--format', 'json']
    end

  ensure_report_dir_exists
  remove_old_json_report

  test_file_entities = slow_test_files

  if test_file_entities.empty?
    no_examples_json = { examples: [] }.to_json
    File.write(report_path, no_examples_json)
    return
  end

  cli_args = cli_format + [
    '--dry-run',
    '--no-color',
    '--out', report_path,
    '--default-path', test_dir,
  ] + KnapsackPro::TestFilePresenter.paths(test_file_entities)
  options = ::RSpec::Core::ConfigurationOptions.new(cli_args)
  exit_code = ::RSpec::Core::Runner.new(options).run($stderr, $stdout)
  if exit_code != 0
    debug_cmd = ([
      'bundle exec rspec',
    ] + cli_args).join(' ')

    KnapsackPro.logger.error('-'*10 + ' START of actionable error message ' + '-'*50)
    KnapsackPro.logger.error('RSpec (with a dry-run option) had a problem generating the report with test examples for the slow test files. Here is what you can do:')

    KnapsackPro.logger.error("a) Please look for an error message from RSpec in the output above or below. If you don't see anything, that is fine. Sometimes RSpec does not produce any errors in the output.")

    KnapsackPro.logger.error("b) Check if RSpec generated the report file #{report_path}. If the report exists, it may contain an error message. Here is a preview of the report file:")
    KnapsackPro.logger.error(report_content || 'N/A')

    KnapsackPro.logger.error('c) To reproduce the error manually, please run the following RSpec command. This way, you can find out what is causing the error. Please ensure you run the command in the same environment where the error occurred. For instance, if the error happens on the CI server, you should run the command in the CI environment:')
    KnapsackPro.logger.error(debug_cmd)

    KnapsackPro.logger.error('-'*10 + ' END of actionable error message ' + '-'*50)

    raise 'There was a problem while generating test examples for the slow test files. Please read the actionable error message above.'
  end
end

#slow_test_files ⇒ Object 



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# File 'lib/knapsack_pro/test_case_detectors/rspec_test_example_detector.rb', line 69

def slow_test_files
  if KnapsackPro::Config::Env.slow_test_file_pattern
    KnapsackPro::TestFileFinder.slow_test_files_by_pattern(adapter_class)
  else
    # read slow test files from JSON file on disk that was generated
    # by lib/knapsack_pro/base_allocator_builder.rb
    KnapsackPro::SlowTestFileDeterminer.read_from_json_report
  end
end

#test_file_example_paths ⇒ Object 



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# File 'lib/knapsack_pro/test_case_detectors/rspec_test_example_detector.rb', line 58

def test_file_example_paths
  raise "No report found at #{report_path}" unless File.exist?(report_path)

  json_report = File.read(report_path)
  hash_report = JSON.parse(json_report)
  hash_report
    .fetch('examples')
    .map { |e| e.fetch('id') }
    .map { |path_with_example_id| test_file_hash_for(path_with_example_id) }
end