Code Coverage & LCOV Viewer

Code Coverage reads LCOV, Cobertura, JaCoCo and Clover reports, marks covered and missed source lines, and lists file totals in the Explorer.

Code Coverage marks covered lines, branch counts and file percentages in VS Code

Free

Reads lcov.info, Cobertura XML, JaCoCo XML and Clover XML
Marks covered and missed lines in the editor
Shows file totals and the least-covered files in the Explorer and in a summary page (Code Coverage: Show Summary)
Reads one report per folder, so a test run that writes both lcov.info and clover.xml is counted once
Works locally with no sign-in and no network calls

Zovo Pro tools

Zovo Pro: USD 19 once covers these project workflows.

Diff coverage for lines changed against main
Export line and branch results as HTML or Markdown
Save coverage history and check a threshold with JSON output for CI

Each Pro tool has 3 free tries. Pro tools run only when you use their commands, the links in the summary page or the Zovo Pro entries when you right-click a report or a covered file in the Explorer. You can hide them with the codeCoverage.showProTools setting. Coverage files and source stay on your computer.

Use it

Put an LCOV or XML report anywhere in the workspace. Code Coverage finds lcov.info, coverage.xml, jacoco.xml and clover.xml files. When one folder holds several formats of the same run, it reads lcov.info first, then Cobertura, JaCoCo and Clover. Use Code Coverage: Refresh Reports to reload them. You can change the report paths in Settings.

Limits

The first release reads local report files and doesn’t launch a test runner. When reports share a source line, the highest hit count is used; Clover branch counts aren’t available. The report search is capped at 100 matches per pattern. Source paths are resolved from the workspace root. An absolute path written on another machine (for example in CI) is matched to the same path ending inside the workspace. Diff coverage needs Git and a local main ref and checks committed changes between main and HEAD.

Support Zovo

Zovo Pro: USD 19 once, every Zovo viewer. Get Zovo Pro on GitHub Sponsors to turn on the Pro tools in this extension and in the other Zovo extensions you use. The free features stay free.

Zovo extensions have no ads and no tracking. They are made by theluckystrike on GitHub. You can also support the work with no Pro:

Need your format supported?

Open a format request with a sample file, and I reply there whether it can be done. For USD 299 once, through this GitHub Sponsors tier, I add your file format or a missing feature to this extension, with tests, within 7 days.

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See all Zovo extensions on the Marketplace.

License

MIT