[PATCH 3/3] test/argparse: add test for repeated arguments

[Bruce Richardson <bruce.richardson@intel.com>]

Add a test case to check that argparse throws an error when an argument
is repeated on the commandline without the SUPPORT_MULTI flag. Also test
that multiple arguments are correctly handled with the flag.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 app/test/test_argparse.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/app/test/test_argparse.c b/app/test/test_argparse.c
index 57b85c4bf0..0a229752fa 100644
--- a/app/test/test_argparse.c
+++ b/app/test/test_argparse.c
@@ -329,6 +329,38 @@ test_argparse_invalid_option(void)
 	return 0;
 }
 
+static int
+test_argparse_invalid_repeated_option(void)
+{
+	/* test that we allow repeated args only with the MULTI flag */
+	struct rte_argparse *obj;
+	char *argv[3];
+	int ret;
+
+	/* check that we error out with two "-a" flags */
+	obj = test_argparse_init_obj();
+	obj->args[0].val_saver = NULL;
+	obj->args[1].val_saver = NULL;
+	argv[0] = test_strdup(obj->prog_name);
+	argv[1] = test_strdup("-a");
+	argv[2] = test_strdup("-a");
+	ret = rte_argparse_parse(obj, 3, argv);
+	TEST_ASSERT(ret == -EINVAL, "Argparse did not error out with two '-a' flags!");
+
+	obj = test_argparse_init_obj();
+	obj->args[0].val_saver = NULL;
+	obj->args[1].val_saver = NULL;
+	obj->args[0].flags |= RTE_ARGPARSE_FLAG_SUPPORT_MULTI;
+	/* check that we allow two "-a" flags with MULTI flag set */
+	argv[0] = test_strdup(obj->prog_name);
+	argv[1] = test_strdup("-a");
+	argv[2] = test_strdup("-a");
+	ret = rte_argparse_parse(obj, 3, argv);
+	TEST_ASSERT(ret == 3, "Argparse failed to handle duplicate '-a' flags!");
+
+	return 0;
+}
+
 static int
 test_argparse_opt_autosave_parse_int_of_no_val(void)
 {
@@ -864,6 +896,7 @@ static struct unit_test_suite argparse_test_suite = {
 		TEST_CASE(test_argparse_invalid_arg_flags),
 		TEST_CASE(test_argparse_invalid_arg_repeat),
 		TEST_CASE(test_argparse_invalid_option),
+		TEST_CASE(test_argparse_invalid_repeated_option),
 		TEST_CASE(test_argparse_opt_autosave_parse_int_of_no_val),
 		TEST_CASE(test_argparse_opt_autosave_parse_int_of_required_val),
 		TEST_CASE(test_argparse_opt_autosave_parse_int_of_optional_val),
-- 
2.48.1