test suite: t-tstunt: When looking for real thing, strip stunt from PATH

Otherwise if we run this again in a fresh environment, the wrapper may
be on PATH even though DGIT_TEST_REAL_<FOO> is not set.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 8 insertions, 1 deletions

diff --git a/tests/lib b/tests/lib
index 1def3d3..1af0288 100644
--- a/tests/lib
+++ b/tests/lib
@@ -801,7 +801,14 @@ t-tstunt--save-real () {
 	local rc
 	local real
 	set +e
-	real=$(type -p "$f")
+	real=$(
+		p=":$PATH:"
+		p="${p/:"$tmp/tstunt":/:}"
+		p="${p%:}"
+		p="${p#:}"
+		PATH="$p"
+		type -p "$f"
+	)
 	rc=$?
 	set -e