[RFC PATCH 1/6] test/telemetry_json: print success or failure per subtest

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

rather than just printing out success or failure at the end of the test
only, print out "OK" or "ERROR" for each individual test case within the
overall test. As part of this, ensure each case returns 0 on success and
any other value on failure.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 app/test/test_telemetry_json.c | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

diff --git a/app/test/test_telemetry_json.c b/app/test/test_telemetry_json.c
index 790181d316..748b7cfe5a 100644
--- a/app/test/test_telemetry_json.c
+++ b/app/test/test_telemetry_json.c
@@ -102,8 +102,10 @@ test_large_array_element(void)
 
 	used = rte_tel_json_add_array_string(buf, sizeof(buf), used, str);
 	printf("%s: buf = '%s', expected = '%s'\n", __func__, buf, expected);
+	if (used != 0)
+		return -1;
 
-	return strlen(buf) != 0;
+	return strncmp(expected, buf, sizeof(buf));
 }
 
 static int
@@ -117,20 +119,33 @@ test_large_obj_element(void)
 
 	used = rte_tel_json_add_obj_u64(buf, sizeof(buf), used, str, 0);
 	printf("%s: buf = '%s', expected = '%s'\n", __func__, buf, expected);
+	if (used != 0)
+		return -1;
 
-	return strlen(buf) != 0;
+	return strncmp(expected, buf, sizeof(buf));
 }
 
+typedef int (*test_fn)(void);
+
 static int
 test_telemetry_json(void)
 {
-	if (test_basic_array() < 0 ||
-			test_basic_obj() < 0 ||
-			test_overflow_array() < 0 ||
-			test_overflow_obj() < 0 ||
-			test_large_array_element() < 0 ||
-			test_large_obj_element() < 0)
-		return -1;
+	unsigned int i;
+	test_fn fns[] = {
+			test_basic_array,
+			test_basic_obj,
+			test_overflow_array,
+			test_overflow_obj,
+			test_large_array_element,
+			test_large_obj_element,
+	};
+	for (i = 0; i < RTE_DIM(fns); i++)
+		if (fns[i]() == 0)
+			printf("OK\n");
+		else {
+			printf("ERROR\n");
+			return -1;
+		}
 	return 0;
 }
 
-- 
2.34.1