Add sig_failover_acceptance test.

acceptance/sig_failover_acceptance/Test.topo

@@ -0,0 +1,18 @@
+--- # Topology for sig_failover_acceptance test.
+defaults:
+  zookeepers:
+    1:
+      addr: 127.0.0.1
+ASes:
+  "1-ff00:0:110":
+    core: true
+    mtu: 1400
+  "1-ff00:0:111":
+    cert_issuer: 1-ff00:0:110
+links:
+  - {a: "1-ff00:0:110#1", b: "1-ff00:0:111#1", linkAtoB: CHILD}
+  - {a: "1-ff00:0:110#2", b: "1-ff00:0:111#2", linkAtoB: CHILD}
+CAs:
+  CA1-1:
+    ISD: 1
+    commonName: CA1-1

acceptance/sig_failover_acceptance/test

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# This test checks whether path failover in SIG works as expected.
+# It sets up two ASes connected by two paths. It disables one path
+# and checks whether IP traffic is still going through. Then it
+# enables the first path and disables the other one. It tries to pass
+# IP packets between the ASes again.
+
+PROGRAM=`basename "$0"`
+COMMAND="$1"
+TEST_NAME="sig_failover"
+TEST_TOPOLOGY="acceptance/sig_failover_acceptance/Test.topo"
+
+. acceptance/sigutil/common.sh
+
+test_run() {
+    set -e
+    # Make sure that pings go through in a vanilla setup.
+    ./bin/sig_ping_acceptance -d -log.console info
+    # Disable one of the two paths between the ASes by stopping the corresponding BR.
+    ./tools/dc stop scion_br1-ff00_0_110-2
+    # Make sure that the pings still get through.
+    ./bin/sig_ping_acceptance -d -log.console info
+    # Enable the disabled path, disable the other path.
+    ./tools/dc start scion_br1-ff00_0_110-2
+    ./tools/dc stop scion_br1-ff00_0_110-1
+    # Make sure that the pings still get through.
+    ./bin/sig_ping_acceptance -d -log.console info
+    # Enable both paths again.
+    ./tools/dc start scion_br1-ff00_0_110-1
+    # Make sure that the pings still get through.
+    ./bin/sig_ping_acceptance -d -log.console info
+}
+
+shift
+do_command $PROGRAM $COMMAND $TEST_NAME "$@"

acceptance/sigutil/common.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-TEST_TOPOLOGY="topology/Tiny.topo"
+TEST_TOPOLOGY=${TEST_TOPOLOGY:-topology/Tiny.topo}
 SRC_IA=${SRC_IA:-1-ff00:0:111}
 DST_IA=${DST_IA:-1-ff00:0:112}