test_runner: skip branches entirely on ignored lines#61845
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test_runner: skip branches entirely on ignored lines#61845drtootsie wants to merge 1 commit intonodejs:mainnodejs/node:mainfrom drtootsie:fix-coverage-ignore-branchesdrtootsie/node:fix-coverage-ignore-branchesCopy head branch name to clipboard
drtootsie wants to merge 1 commit intonodejs:mainnodejs/node:mainfrom
drtootsie:fix-coverage-ignore-branchesdrtootsie/node:fix-coverage-ignore-branchesCopy head branch name to clipboard
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Fixes: nodejs#61586 When a branch is entirely on ignored lines (via c8 ignore comments), it should not appear in the BRDA output at all, rather than appearing with 0 coverage. Modified the branch coverage logic to check if all lines in the branch are ignored before adding to branchReports and incrementing totalBranches. This ensures ignored branches don't pollute coverage reports.
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Review requested:
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pmarchini
reviewed
Feb 16, 2026
| range.ignoredLines === range.lines.length) { | ||
| branchesCovered++; | ||
| // Skip branches that are entirely on ignored lines | ||
| if (range.ignoredLines !== range.lines.length) { |
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Could you please cover these changes with tests?
Member
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I believe this is a duplicate of #61598 |
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Fixes: #61586
Summary
When a branch is entirely on ignored lines (via c8 ignore comments), it should not appear in the BRDA output at all, rather than appearing with 0 coverage.
Changes
Modified the branch coverage logic in
lib/internal/test_runner/coverage.jsto check if all lines in the branch are ignored before:branchReportsarraytotalBranchescounterThis ensures ignored branches don't pollute coverage reports.
Testing
Requires building Node.js and running the test suite:
./configure && make -j4 make test-only