sha1-lookup: handle duplicate keys with GIT_USE_LOOKUP

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 52510094add59b508e1581ffebfa555e7249561c..fac9234d3c688ed588da6844163c5d0e712ba3ab 100644 (file)
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -679,3 +679,20 @@ test_create_repo () {
                mv .git/hooks .git/hooks-disabled
        ) || exit
 }
+
+# This function helps on symlink challenged file systems when it is not
+# important that the file system entry is a symbolic link.
+# Use test_ln_s_add instead of "ln -s x y && git add y" to add a
+# symbolic link entry y to the index.
+
+test_ln_s_add () {
+       if test_have_prereq SYMLINKS
+       then
+               ln -s "$1" "$2" &&
+               git update-index --add "$2"
+       else
+               printf '%s' "$1" >"$2" &&
+               ln_s_obj=$(git hash-object -w "$2") &&
+               git update-index --add --cacheinfo 120000 $ln_s_obj "$2"
+       fi
+}