remote-helpers: add tests for testgit helper

diff --git a/diff-no-index.c b/diff-no-index.c
index 4ebc1dbd87d9b90ad2aaa5c7d4601761e2d1d724..aae8e7accc1ff955bd76c62b379b37f343f61cc4 100644 (file)
--- a/diff-no-index.c
+++ b/diff-no-index.c
@@ -201,8 +201,8 @@ void diff_no_index(struct rev_info *revs,
                        return;
        }
        if (argc != i + 2)
-               die("git diff %s takes two paths",
-                   no_index ? "--no-index" : "[--no-index]");
+               usagef("git diff %s <path> <path>",
+                      no_index ? "--no-index" : "[--no-index]");
 
        diff_setup(&revs->diffopt);
        for (i = 1; i < argc - 2; ) {