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operators argument of mutate_file()
and mutate_package() to select the mutation operators by id
or family, e.g.
operators = c("default", "seq_idiom", "-bool_flip"). The
option mutator.operators sets it for a session. The new
mutation_operators() lists the operators.< to <=), ^,
%% and %/% swaps, removal of an
&&/|| operand,
break/next swaps, forced conditions,
off-by-one constants, empty strings, and R-specific operators:
TRUE/FALSE flips (also in argument defaults),
<<- to <-, && to
&, max to pmax,
[[ to [, seq_len(n) to
1:n, dropping drop = FALSE and other named
arguments, function swaps (any/all,
min/max, head/tail,
…), removal of wrappers such as rev() or
unique(), and removal of error handling
(tryCatch(), stop()). The replacement of
values by 42, which was disabled, is available as
value_42.&&/|| operand,
break/next,
TRUE/FALSE, <<-, named
argument, function swap and error handling operators. NA
type swaps (NA to NA_integer_, …) are no
longer in the default set, as most of their mutants are equivalent.
Results of mutate_package() therefore differ from earlier
versions.# mutator:ignore-start and
# mutator:ignore-file can list operator ids or families, to
exclude only those operators.mutate_package() reports the mutation score per
operator in summary$by_operator, printed with
isFullLog = TRUE.paste to paste0 with a single argument). A
message gives their number per file.Retry-After. Network errors are retried twice, and a
request may wait up to 30 minutes for the answer of a reasoning
model.operators input.mutator-source input selects cran (default),
r-universe, github, or local
(mutator is the package under test). When CRAN or r-universe cannot
provide the package, the workflow falls back to
PRL-PRG/mutator at the tag given by the new
mutator-ref input, which defaults to the release the
workflow is versioned with; set mutator-fallback: false to
fail instead. The existing mutator-spec input still accepts
a raw pak spec and now overrides mutator-source; it no
longer defaults to GitHub.This release addresses feedback received from CRAN during the review of the initial submission:
mutate_file(), so callers must explicitly choose where
mutant files are written.on.exit() in all package test-runner and coverage code
paths that temporarily change it.It also improves Windows support:
Sys.junction()) rather than symbolic links on Windows,
which unlink() cannot remove; this avoids leftover reparse
points and the accompanying R CMD check warnings.tinytest support. A package with an
inst/tinytest directory is now auto-detected and its
mutants are run in-process with pkgload::load_all() and
tinytest::run_test_dir(), without an install per mutant,
including coverage-guided test selection.strategy argument to
mutate_package() to override test-framework auto-detection.
Accepted values are "auto" (the default),
"testthat", "tinytest",
"tinytest-installed", and "installed".tinytest-installed strategy that installs each
mutant and runs tinytest::test_package(). It is a fallback
for packages whose in-process load diverges from an installed copy and
unlike the generic installed-tests fallback it still supports
coverage-guided selection.per_file coverage backend to forward the
package’s tests/testthat.R harness arguments (notably any
filter) to testthat::test_dir(), matching the
record_tests backend.record_tests coverage backend so it forwards
the selected CRAN mode consistently.imputesrcref from its default branch, replacing the removed
development-branch reference.These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.