1 files changed, 67 insertions, 0 deletions
diff --git a/test/unit/ppp/test_pppos.c b/test/unit/ppp/test_pppos.c
new file mode 100644
index 00000000000..2b9aee810f8
--- /dev/null
+++ b/test/unit/ppp/test_pppos.c
@@ -0,0 +1,67 @@
+#include "test_pppos.h"
+
+#include "lwip/netif.h"
+#include "netif/ppp/pppos.h"
+#include "netif/ppp/ppp.h"
+
+#if PPP_SUPPORT && PPPOS_SUPPORT
+static struct netif pppos_netif;
+static ppp_pcb *ppp;
+
+static u32_t ppp_output_cb(ppp_pcb *pcb, const void *data, u32_t len, void *ctx)
+{
+  LWIP_UNUSED_ARG(pcb);
+  LWIP_UNUSED_ARG(data);
+  LWIP_UNUSED_ARG(len);
+  LWIP_UNUSED_ARG(ctx);
+
+  return  0;
+}
+
+static void ppp_link_status_cb(ppp_pcb *pcb, int err_code, void *ctx)
+{
+  LWIP_UNUSED_ARG(pcb);
+  LWIP_UNUSED_ARG(err_code);
+  LWIP_UNUSED_ARG(ctx);
+}
+
+static void pppos_setup(void)
+{
+  ppp = pppos_create(&pppos_netif, ppp_output_cb, ppp_link_status_cb, NULL);
+  fail_if(ppp == NULL);
+  ppp_connect(ppp, 0);
+}
+
+static void pppos_teardown(void)
+{
+}
+
+START_TEST(test_pppos_empty_packet_with_valid_fcs)
+{
+  u8_t two_breaks[] = { 0x7e, 0, 0, 0x7e };
+  u8_t other_packet[] = { 0x7e, 0x7d, 0x20, 0x00, 0x7e };
+  /* Set internal states of the underlying pcb */
+  pppos_pcb *pppos = (pppos_pcb *)ppp->link_ctx_cb;
+ 
+  LWIP_UNUSED_ARG(_i);
+
+  pppos->open = 1;  /* Pretend the connection is open already */
+  pppos->in_accm[0] = 0xf0;  /* Make sure 0x0's are not escaped chars */
+
+  pppos_input(ppp, two_breaks, sizeof(two_breaks));
+  pppos_input(ppp, other_packet, sizeof(other_packet));
+
+}
+END_TEST
+
+/** Create the suite including all tests for this module */
+Suite *
+pppos_suite(void)
+{
+  testfunc tests[] = {
+    TESTFUNC(test_pppos_empty_packet_with_valid_fcs)
+  };
+  return create_suite("PPPOS", tests, sizeof(tests)/sizeof(testfunc), pppos_setup, pppos_teardown);
+}
+
+#endif /* PPP_SUPPORT && PPPOS_SUPPORT */