Class: Necropsy::Analyzers::Dynamic::CoverageImporter

Inherits:
Necropsy::Analyzer show all
Defined in:
lib/necropsy/analyzers/dynamic/coverage_importer.rb

Direct Known Subclasses

TracePointImporter

Instance Method Summary collapse

Methods inherited from Necropsy::Analyzer

#capabilities

Constructor Details

#initialize(config) ⇒ CoverageImporter

Returns a new instance of CoverageImporter.



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# File 'lib/necropsy/analyzers/dynamic/coverage_importer.rb', line 11

def initialize(config)
  @config = config || {}
end

Instance Method Details

#analyze(_graph, project) ⇒ Object 



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# File 'lib/necropsy/analyzers/dynamic/coverage_importer.rb', line 15

def analyze(_graph, project)
  source = config['source']
  return AnalyzerResult.empty unless source

  payload = load_payload(File.expand_path(source, project.root))
  observation = ObservationPolicy.metadata(payload, expected_revision: config['expected_source_revision'])
  malformed = []
  alive = node_references(payload).map do |raw_reference|
    node_id = normalized_or_raw(raw_reference, malformed, :node)
    AliveEvidence.new(
      node_id: node_id,
      evidence: evidence(
        kind: :alive,
        details: "Coverage marked #{reference_label(node_id)} as executed",
        metadata: observation.merge('node_reference' => node_id),
        grade: :observed,
        relation: :execution,
        source: { 'type' => profile.name.to_s, 'node_reference' => node_id },
        scope: ObservationPolicy.evidence_scope(observation).merge('node_reference' => node_id)
      )
    )
  end

  edge_evidences = edge_references(payload).filter_map do |edge|
    unless edge.is_a?(Hash)
      malformed << malformed_reference(:edge, edge)
      next
    end

    caller = edge['caller_id'] || edge[:caller_id]
    callee = edge['callee_id'] || edge[:callee_id]
    caller_id = normalized_or_raw(caller, malformed, :edge_caller)
    callee_id = normalized_or_raw(callee, malformed, :edge_callee)
    EdgeEvidence.new(
      caller_id: caller_id,
      callee_id: callee_id,
      evidence: evidence(
        kind: :call_edge,
        details: "Coverage observed #{reference_label(caller_id)} -> #{reference_label(callee_id)}",
        metadata: { 'caller_reference' => caller_id, 'callee_reference' => callee_id },
        grade: :observed,
        relation: :observed_call,
        source: {
          'type' => profile.name.to_s,
          'caller_reference' => caller_id,
          'callee_reference' => callee_id
        },
        scope: ObservationPolicy.evidence_scope(observation).merge(
          'caller_reference' => caller_id,
          'callee_reference' => callee_id
        )
      )
    )
  end
  observation = observation.merge('malformed_references' => malformed) unless malformed.empty?

  AnalyzerResult.new(
    edge_evidences: edge_evidences,
    alive_evidences: alive,
    uncertainties: {},
    observation: { 'coverage' => observation },
    resolutions: [],
    evidences: result_evidences(edge_evidences, alive)
  )
end

#profile ⇒ Object 



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# File 'lib/necropsy/analyzers/dynamic/coverage_importer.rb', line 81

def profile
  AnalyzerProfile.new(
    name: :coverage,
    kind: :dynamic,
    soundness: :observational,
    description: 'Imports method execution and observed edges from Ruby Coverage output.',
    version: Necropsy::VERSION,
    assumptions: ['positive_observations_only']
  )
end