dt_compute_untested_functions: Compute untested functions from coverage using srcref spans...

In test.assessr: Assessing Package Test Reliability and Quality

Compute untested functions from coverage using srcref spans (internal)

Description

Identifies package functions that were not executed by the provided coverage object. A function is considered untested if no line within its srcref span (from start_line to end_line) has a positive execution count in covr::tally_coverage().

Usage

dt_compute_untested_functions(pkg_name, coverage)

Arguments

pkg_name	character(1). The package name whose namespace is inspected for functions (asNamespace(pkg_name)).
coverage	A coverage object as returned by covr (e.g., covr::environment_coverage() or covr::package_coverage()), consumable by covr::tally_coverage().

Value

data.frame with one row per untested function and columns:

function_name

Function symbol in the package namespace.

file

Absolute, normalized path to the source file containing the function.

start_line

Start line (inclusive) from the function's srcref.

end_line

End line (inclusive) from the function's srcref.

Returns an empty data.frame with these columns if (a) the coverage table is empty, (b) no functions have an srcref, or (c) all functions had at least one executed line within their span.

Details

• Functions without an srcref are skipped.

• Files are matched by basename between the coverage table and the function’s srcref source path to make the join resilient to differing absolute paths in temporary build trees.

• A line is considered executed when its coverage value is a finite number greater than zero.

See Also

tally_coverage

test.assessr documentation built on April 30, 2026, 5:06 p.m.