Class: ActiveMutator::Runner

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

Instance Method Summary collapse

Constructor Details

#initialize(config, reporter: nil) ⇒ Runner

Returns a new instance of Runner.



5
6
7
8
 
# File 'lib/active_mutator/runner.rb', line 5

def initialize(config, reporter: nil)
  @config = config
  @reporter = reporter || build_reporter
end

Instance Method Details

#call ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/active_mutator/runner.rb', line 10

def call
  ENV["ACTIVE_MUTATOR"] = "1"
  load_operators
  preload!
  preload_spec_helper!
  map = Baseline.new(root: @config.root).coverage_map(force: @config.force_baseline)
  @reporter.coverage_map = map if @reporter.respond_to?(:coverage_map=)
  subjects = discover_subjects
  analyses = subjects.map { |s| Engine.new.analyze(s) }
  mutations = analyses.flat_map(&:mutations)
  mutations = mutations.first(@config.max_mutants) if @config.max_mutants
  invalid_count = analyses.sum(&:invalid_count)

  fingerprints = Fingerprint.for_mutations(mutations, root: @config.root)
  ledger = AcceptedLedger.load(@config.root)
  scanned_files = prune_scope(subjects)
  warn_stale(ledger, fingerprints.values, scanned_files)

  items, pre_results = plan_work(mutations, map, ledger: ledger, fingerprints: fingerprints)
  return debug_plan(items, pre_results) if @config.debug_plan

  pre_results.each { |r| @reporter.on_result(r) }
  calibrators = if @config.adaptive_timeout
                  { parallel: TimeoutCalibrator.new, serial: TimeoutCalibrator.new }
                end
  scheduler = Scheduler.new(jobs: @config.jobs, on_result: @reporter.method(:on_result),
                            calibrators: calibrators)
  results = scheduler.run(items) + pre_results

  accept_survivors!(ledger, results, fingerprints, scanned_files) if @config.accept_survivors

  @reporter.summary(results, invalid_count: invalid_count)
  exit_code(results)
end

#exit_code(results) ⇒ Object 



69
70
71
72
73
74
75
76
77
 
# File 'lib/active_mutator/runner.rb', line 69

def exit_code(results)
  survived = results.count { |r| r.status == :survived }
  return 0 if survived.zero?
  return 1 unless @config.fail_at

  detected = results.count { |r| %i[killed timeout].include?(r.status) }
  score = detected * 100.0 / (detected + survived)
  score >= @config.fail_at ? 0 : 1
end

#plan_work(mutations, map, ledger: nil, fingerprints: {}) ⇒ Object

Returns [work_items, pre_results]. Public for unit testing.



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/active_mutator/runner.rb', line 46

def plan_work(mutations, map, ledger: nil, fingerprints: {})
  items = []
  pre_results = []
  mutations.each do |mutation|
    if ledger&.accepted?(fingerprints[mutation])
      pre_results << Result.new(mutation: mutation, status: :accepted, details: nil)
      next
    end
    example_ids = map.examples_for(mutation.subject.file, coverage_lines(mutation))
    if example_ids.empty?
      pre_results << Result.new(mutation: mutation, status: :uncovered, details: nil)
    else
      lane = example_ids.any? { |id| serial_example?(id) } ? :serial : :parallel
      variable = map.time_for(example_ids) * @config.timeout_factor
      boot_extra = lane == :serial ? @config.browser_boot_seconds : 0.0
      timeout = variable + @config.timeout_floor + boot_extra
      items << WorkItem.new(mutation: mutation, example_ids: example_ids,
                            timeout: timeout, lane: lane, variable: variable)
    end
  end
  [items, pre_results]
end