tests: run scenarios selected by name

nix-build tests -A only --argstr only REGEX runs the scenarios whose
names match the regular expression REGEX in a single VM test, like the
smoke test, e.g. --argstr only 'lock-hooks-.*' for lock-hooks on all
three kinds of targets.

1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index a95eb24..8661a21 100644
--- a/README.md
+++ b/README.md
@@ -747,6 +747,7 @@ nix-build tests -A flake          # the test for one source type
 nix-build tests -A exhaustive     # all exhaustive tests
 nix-build tests -A exhaustive.git # the remaining combinations of one test
 nix-build tests -A rsync-3-5-0    # the scenarios depending on rsync's version
+nix-build tests -A only --argstr only 'lock-hooks-.*'  # scenarios by name
 nix-build tests -A jq             # populate's programs for flakes, without VMs
 ```