Make sure that the ethrotate behavior occurs as expected.

Signed-off-by: Joe Hershberger <joe.hershber...@ni.com>
Reviewed-by: Simon Glass <s...@chromium.org>

---

Changes in v6: None
Changes in v5:
-Added a test for skipping un-probe-able devices

Changes in v4:
-Added testing for ethrotate

Changes in v3: None
Changes in v2: None

 test/dm/eth.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/test/dm/eth.c b/test/dm/eth.c
index 96e3c46..9b55013 100644
--- a/test/dm/eth.c
+++ b/test/dm/eth.c
@@ -80,3 +80,45 @@ static int dm_test_eth_prime(struct dm_test_state *dms)
        return 0;
 }
 DM_TEST(dm_test_eth_prime, DM_TESTF_SCAN_FDT);
+
+static int dm_test_eth_rotate(struct dm_test_state *dms)
+{
+       char ethaddr[18];
+
+       /* Invalidate eth1's MAC address */
+       NetPingIP = string_to_ip("1.1.2.2");
+       strcpy(ethaddr, getenv("eth1addr"));
+       setenv("eth1addr", NULL);
+
+       /* Make sure that the default is to rotate to the next interface */
+       setenv("ethact", "eth@10004000");
+       ut_assertok(NetLoop(PING));
+       ut_asserteq_str("eth@10002000", getenv("ethact"));
+
+       /* If ethrotate is no, then we should fail on a bad MAC */
+       setenv("ethact", "eth@10004000");
+       setenv("ethrotate", "no");
+       ut_asserteq(-1, NetLoop(PING));
+       ut_asserteq_str("eth@10004000", getenv("ethact"));
+
+       /* Restore the env */
+       setenv("eth1addr", ethaddr);
+       setenv("ethrotate", NULL);
+
+       /* Invalidate eth0's MAC address */
+       strcpy(ethaddr, getenv("ethaddr"));
+       setenv(".flags", "ethaddr");
+       setenv("ethaddr", NULL);
+
+       /* Make sure we can skip invalid devices */
+       setenv("ethact", "eth@10004000");
+       ut_assertok(NetLoop(PING));
+       ut_asserteq_str("eth@10004000", getenv("ethact"));
+
+       /* Restore the env */
+       setenv("ethaddr", ethaddr);
+       setenv(".flags", NULL);
+
+       return 0;
+}
+DM_TEST(dm_test_eth_rotate, DM_TESTF_SCAN_FDT);
-- 
1.7.11.5

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