About check-rust-coverage
A skill for finding Rust source lines not covered by tests. It accepts crate paths, including multiple paths or directories, and reports uncovered line numbers using `cargo llvm-cov` output.
Key features
- 01Accepts one or multiple crate paths
- 02Handles directories containing Rust crates
- 03Reports uncovered lines by file
Use cases
- 01Locate untested lines in a Rust crate
- 02Review coverage across several crates
Install
Copy the command and run it in a terminal.
$
npx skills add https:/After installing, type/check-rust-coveragein Claude Code to confirm it loaded.
Details
From the project READMECheck Rust Coverage
Determine which Rust lines are not covered by Rust tests.
Arguments
<path>: Path to a Rust crate.<path 1> <path 2>: Multiple crate paths.
If a path doesn't include src/, assume it to be in the src/redisearch_rs directory. E.g. numeric_range_tree becomes src/redisearch_rs/numeric_range_tree.
If a path points to a directory, consider all Rust crates in that directory.
Instructions
Run
cargo llvm-cov test --manifest-path <crate_directory>/Cargo.toml --quiet --json 2>/dev/null | jq -r '"Uncovered Lines:",
(.data[0].files[] |
select(.summary.lines.percent < 100) |
.filename as $f |
[.segments[] | select(.[2] == 0 and .[4] == true) | .[0]] |
unique |
if length > 0 then "\($f): \(join(", "))" else empty end
)'
to get the list of uncovered lines for each file in the target crate.
Comments
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