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-rw-r--r--t/README6
-rw-r--r--t/test-lib.sh42
2 files changed, 44 insertions, 4 deletions
diff --git a/t/README b/t/README
index 52c77ae936..9952261299 100644
--- a/t/README
+++ b/t/README
@@ -82,6 +82,12 @@ appropriately before running "make".
numbers matching <pattern>. The number matched against is
simply the running count of the test within the file.
+-x::
+ Turn on shell tracing (i.e., `set -x`) during the tests
+ themselves. Implies `--verbose`. Note that this can cause
+ failures in some tests which redirect and test the
+ output of shell functions. Use with caution.
+
-d::
--debug::
This may help the person who is developing a new test.
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 0f4a67bfc6..cf19339cce 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -233,6 +233,10 @@ do
--root=*)
root=$(expr "z$1" : 'z[^=]*=\(.*\)')
shift ;;
+ -x)
+ trace=t
+ verbose=t
+ shift ;;
*)
echo "error: unknown test option '$1'" >&2; exit 1 ;;
esac
@@ -517,10 +521,39 @@ maybe_setup_valgrind () {
fi
}
+# This is a separate function because some tests use
+# "return" to end a test_expect_success block early
+# (and we want to make sure we run any cleanup like
+# "set +x").
+test_eval_inner_ () {
+ # Do not add anything extra (including LF) after '$*'
+ eval "
+ test \"$trace\" = t && set -x
+ $*"
+}
+
test_eval_ () {
- # This is a separate function because some tests use
- # "return" to end a test_expect_success block early.
- eval </dev/null >&3 2>&4 "$*"
+ # We run this block with stderr redirected to avoid extra cruft
+ # during a "-x" trace. Once in "set -x" mode, we cannot prevent
+ # the shell from printing the "set +x" to turn it off (nor the saving
+ # of $? before that). But we can make sure that the output goes to
+ # /dev/null.
+ #
+ # The test itself is run with stderr put back to &4 (so either to
+ # /dev/null, or to the original stderr if --verbose was used).
+ {
+ test_eval_inner_ "$@" </dev/null >&3 2>&4
+ test_eval_ret_=$?
+ if test "$trace" = t
+ then
+ set +x
+ if test "$test_eval_ret_" != 0
+ then
+ say_color error >&4 "error: last command exited with \$?=$test_eval_ret_"
+ fi
+ fi
+ } 2>/dev/null
+ return $test_eval_ret_
}
test_run_ () {
@@ -531,7 +564,8 @@ test_run_ () {
eval_ret=$?
teardown_malloc_check
- if test -z "$immediate" || test $eval_ret = 0 || test -n "$expecting_failure"
+ if test -z "$immediate" || test $eval_ret = 0 ||
+ test -n "$expecting_failure" && test "$test_cleanup" != ":"
then
setup_malloc_check
test_eval_ "$test_cleanup"