Module: SimpleCov::Combine::BranchesCombiner

Defined in:
lib/simplecov/combine/branches_combiner.rb

Overview

Combine different branch coverage results on single file.

Should be called through ‘SimpleCov.combine`.

Class Method Summary collapse

Class Method Details

.combine(coverage_a, coverage_b) ⇒ Hash

Return merged branches or the existed brach if other is missing.

Branches inside files are always same if they exist, the difference only in coverage count. Branch coverage report for any conditional case is built from hash, it’s key is a condition and it’s body is a hash << keys from condition and value is coverage rate >>. ex: branches =>{ [:if, 3, 8, 6, 8, 36] => 4, 8, 6, 8, 12] => 1, [:else, 5, 8, 6, 8, 36]=>2, other conditions…} We create copy of result and update it values depending on the combined branches coverage values.

Returns:

  • (Hash) 


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# File 'lib/simplecov/combine/branches_combiner.rb', line 23

def combine(coverage_a, coverage_b)
  coverage_a.merge(coverage_b) do |_condition, branches_inside_a, branches_inside_b|
    branches_inside_a.merge(branches_inside_b) do |_branch, a_count, b_count|
      a_count + b_count
    end
  end
end