Class: ActiveMutator::Baseline

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

Overview

Runs the host suite once, instrumented, in a subprocess. Produces and caches the CoverageMap. Invalidation is coarse: any digest change in app,lib/**/*.rb or the configured spec paths triggers a full re-run.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root:, spec_paths: ["spec"], cache_dir: File.join(root, ".active_mutator")) ⇒ Baseline

Returns a new instance of Baseline.



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# File 'lib/active_mutator/baseline.rb', line 10

def initialize(root:, spec_paths: ["spec"], cache_dir: File.join(root, ".active_mutator"))
  @root = root
  @spec_paths = spec_paths
  @cache_dir = cache_dir
  @out_path = File.join(cache_dir, "coverage.json")
end

Instance Attribute Details

#last_refresh ⇒ Object (readonly)

Returns the value of attribute last_refresh.



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# File 'lib/active_mutator/baseline.rb', line 17

def last_refresh
  @last_refresh
end

Instance Method Details

#coverage_map(force: false) ⇒ Object 



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# File 'lib/active_mutator/baseline.rb', line 19

def coverage_map(force: false)
  digests = current_digests
  if !force && File.exist?(@out_path)
    map = CoverageMap.load(@out_path)
    # A spec_paths change silently degrades the delta classifier: files
    # under a removed spec path just vanish from the digest scan, so
    # BaselineDelta treats their stale example records as untouched
    # source coverage instead of dropping them. Force a full rebuild
    # whenever the configured spec_paths differ from what the cache was
    # stamped with.
    if stored_spec_paths(map) == @spec_paths && map.fresh?(digests)
      @last_refresh = :cached
      return map
    end
    if stored_spec_paths(map) == @spec_paths && map.version == 2
      delta = BaselineDelta.compute(old_digests: stored_digests(map), new_digests: digests,
                                    coverage_map: map, root: @root, spec_paths: @spec_paths)
      unless delta.full?
        run_partial!(delta)
        stamp_digests(digests)
        @last_refresh = :partial
        return CoverageMap.load(@out_path)
      end
    end
  end
  run_baseline!
  stamp_digests(digests)
  @last_refresh = :full
  CoverageMap.load(@out_path)
end