covr-inserted trace codeWorkarounds to allow the package to continue to work while running covr
with minimal changes to the package code.
h_covr_active()h_covr_detrace(expr)
h_is_covr_trace(expr)
h_covr_detrace_call(expr)
A logical value or transformed expression with calls to
covr:::count removed.
(language)
an R expression or call to test or strip of
covr trace counters.
h_covr_active(): Determine whether covr is currently running
h_covr_detrace(): Remove covr traces from an expression
h_is_covr_trace(): Determine whether the current expression is a covr-modified expression
h_covr_detrace_call(): Extract the original expression from a covr-modified expression
When using covr, the source code for package objects are modified to add
callbacks for each expression to log its execution. Given an arbitrary
expression, such as:
expr
The code will be modified before executing any package code to look like:
if (TRUE) {
covr:::count("file.R:1:2:3:4:5:6:7:8")
expr
}
These functions are used for stripping expressions of this code so that the
package continues to work as intended while running tests as part of running
covr to calculate package coverage.
This method is non-exhaustive, covering only a subset of covr's tracing
behaviors necessary for this package.