Merge branch 'sm/mv-dry-run-update'

Code clean-up.

* sm/mv-dry-run-update:
  mv: remove unneeded 'if (!show_only)'
  t7001: add test case for --dry-run

builtin/mv.c

@@ -286,8 +286,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
 
 		pos = cache_name_pos(src, strlen(src));
 		assert(pos >= 0);
-		if (!show_only)
-			rename_cache_entry_at(pos, dst);
+		rename_cache_entry_at(pos, dst);
 	}
 
 	if (gitmodules_modified)