Add test cases for command-line parsing

Preparation for refactoring command-line parsing.
All these test cases pass.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/internal.h b/internal.h
index c2f504a..ba7d719 100644
--- a/internal.h
+++ b/internal.h
@@ -94,6 +94,10 @@ struct cmd_context {
 	struct ifreq ifr;	/* ifreq suitable for ethtool ioctl */
 };
 
+#ifdef TEST_ETHTOOL
+int test_cmdline(const char *args);
+#endif
+
 int send_ioctl(struct cmd_context *ctx, void *cmd);
 
 /* National Semiconductor DP83815, DP83816 */