Class: GitTest

Inherits:
Thor
  • Object
show all
Defined in:
lib/git_test.rb

Constant Summary collapse

LHS = 
'changed_items'
RHS = 
'impacted_items'

Instance Method Summary collapse

Instance Method Details

#join ⇒ Object 



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# File 'lib/git_test.rb', line 59

def join
  begin
    mapping = CSV.read(options[:mapping], headers: true, skip_lines: /#/)
  rescue CSV::MalformedCSVError, ArgumentError => e
    $stderr.puts "An error occured when parsing the mapping file '#{options[:mapping]}:\n #{e}"
    exit 1
  end

  begin
    change_rec = CSV.read(options[:change_recommendation], headers: true)
  rescue CSV::MalformedCSVError, ArgumentError => e
    $stderr.puts "An error occured when parsing the change recommendation '#{options[:change_recommendation]}:\n #{e}"
    exit 1
  end


  # print header
  CSV {|r| r << %w(#{LHS} #{RHS} support #{LHS}_tested_by #{RHS}_tested_by)}
  change_rec.each do |row|
    lhs = row['lhs']
    rhs = row['rhs']
    support = row["support"].to_r.to_f
    # find relevant tests
    lhs_tests = []
    rhs_tests = []
    mapping.each do |mapping_row|
      pattern = Regexp.new(mapping_row["pattern"], Regexp::IGNORECASE)
      test = mapping_row["test"]
      if lhs =~ pattern
        lhs_tests << test
      end

      if rhs =~ pattern
        rhs_tests << test
      end
    end
    # print new row
    CSV {|r| r << [lhs, rhs, support, (lhs_tests.empty? ? nil : lhs_tests.join(",")), (rhs_tests.empty? ? nil : rhs_tests.join(","))]}
  end                          
end

#plan ⇒ Object 



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# File 'lib/git_test.rb', line 10

def plan
  begin
    change_rec = CSV.read(options[:change_recommendation], headers: true)
  rescue CSV::MalformedCSVError, ArgumentError => e
    $stderr.puts "An error occured when parsing the change recommendation '#{options[:change_recommendation]}':\n #{e}"
    exit 1
  end


  test_plan = Hash.new
  coverage = {LHS => Set.new, RHS => Set.new}

  change_rec.each do |row|
    support = row["support"].to_r.to_f
    # find relevant tests
    [LHS,RHS].each do |side|
      tests = (row["#{side}_tested_by"].nil? ? [] : row["#{side}_tested_by"].split(","))
      tests.each do |test|
        coverage[side] << row[side]
        if test_plan[test].nil?
          test_plan[test] = {'cg' => 0, LHS => 0, RHS => 0}
        end
        test_plan[test]['cg'] += support
        test_plan[test][side] += 1
      end
    end
  end
  # normalize the cumulative gain
  max_cg = test_plan.map {|_,v| v['cg']}.max
  test_plan.each {|test,v| test_plan[test]['cg'] = v['cg']/max_cg}

  # print warnings to stderr if any
  [LHS,RHS].each do |side|
    items_in_plan = change_rec.map {|row| row[side]}.to_set
    if coverage[side].size < items_in_plan.size
      uncovered = items_in_plan - coverage[side]
      $stderr.puts "#{uncovered.size} #{side.gsub('_',' ')} were not covered by at least 1 test. The first 10 were: \n #{uncovered.take(10).join("\n")}"
    end
  end
  # print testplan to stdout
  $stdout.puts "test,impact,#{LHS}_covered,#{RHS}_covered"
  test_plan.sort_by {|k,v| [v[LHS],v[RHS]].max}.each do |test,v|
    $stdout.puts "#{test},#{v['cg']},#{v[LHS]},#{v[RHS]}"
  end
end