[PATCH 8/8] msgb/test: Add test case for error cases

[Jacob Erlbeck]

Include a test for msgb_trim.

Sponsored-by: On-Waves ehf
---
 tests/msgb/msgb_test.c  | 22 ++++++++++++++++++++++
 tests/msgb/msgb_test.ok |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/tests/msgb/msgb_test.c b/tests/msgb/msgb_test.c
index e6cb33e..8839a2e 100644
--- a/tests/msgb/msgb_test.c
+++ b/tests/msgb/msgb_test.c
@@ -121,6 +121,27 @@ static void test_msgb_api()
        msgb_free(msg);
 }

+static void test_msgb_api_errors()
+{
+       struct msgb *msg = msgb_alloc_headroom(4096, 128, "data");
+       volatile int e = 0;
+       int rc;
+
+       printf("Testing the msgb API error handling\n");
+
+       osmo_set_panic_handler(osmo_panic_raise);
+
+       if (OSMO_PANIC_TRY(&e))
+               msgb_trim(msg, -1);
+       OSMO_ASSERT(e != 0);
+
+       rc = msgb_trim(msg, 4096 + 500);
+       OSMO_ASSERT(rc == -1);
+
+       msgb_free(msg);
+       osmo_set_panic_handler(NULL);
+}
+
 static void test_msgb_copy()
 {
        struct msgb *msg = msgb_alloc_headroom(4096, 128, "data");
@@ -263,6 +284,7 @@ int main(int argc, char **argv)
        osmo_init_logging(&info);

        test_msgb_api();
+       test_msgb_api_errors();
        test_msgb_copy();
        test_msgb_resize_area();

diff --git a/tests/msgb/msgb_test.ok b/tests/msgb/msgb_test.ok
index 4cb76a9..6603fe7 100644
--- a/tests/msgb/msgb_test.ok
+++ b/tests/msgb/msgb_test.ok
@@ -18,6 +18,8 @@ Test msgb_hexdump
 Buffer: (L1=data-124) 00 00 00 00 00 00 00 00 [L2]> 00 00 00 00 [L3]> 
(L4=tail+4) 
 Buffer: (L1=data-124) 00 00 00 00 00 00 00 00 [L2]> (L3+8) 00 00 00 00 
(L4=tail+4) 
 Buffer: (L1=data-124) 00 00 00 00 00 00 00 00 [L2]> 00 00 00 00 (L3 out of 
range) (L4=tail+4) 
+Testing the msgb API error handling
+msgb(%p): Negative length is not allowed
 Testing msgb_copy
 Src: [L1]> 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 [L2]> 
14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 [L3]> 28 29 2a 2b 
2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b [L4]> 3c 3d 3e 3f 40 41 42 43 
44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 
 Dst: [L1]> 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 [L2]> 
14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 [L3]> 28 29 2a 2b 
2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b [L4]> 3c 3d 3e 3f 40 41 42 43 
44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 
-- 
1.9.1