add usb type-c to ethernet test

Signed-off-by: Maciej Kisielewski <maciej.kisielewski@canonical.com> 

1 files changed, 43 insertions, 0 deletions

diff --git a/bin/net_if_watcher.py b/bin/net_if_watcher.py
new file mode 100755
index 0000000..0ba61df
--- /dev/null
+++ b/bin/net_if_watcher.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+# Copyright 2018 Canonical Ltd.
+# All rights reserved.
+#
+# Written by:
+# Maciej Kisielewski <maciej.kisielewski@canonical.com>
+"""
+Detect insertion of a new network interface.
+"""
+
+from pathlib import Path
+import time
+
+
+def get_ifaces():
+ return set([i.name for i in Path("/sys/class/net").iterdir()])
+
+
+def main():
+ print("INSERT NOW")
+ starting_ifaces = get_ifaces()
+ attempts = 20
+ while attempts > 0:
+ now_ifaces = get_ifaces()
+ # check if something disappeared
+ if not starting_ifaces == now_ifaces & starting_ifaces:
+ raise SystemExit("Interface(s) disappeared: {}".format(
+ ", ".join(list(starting_ifaces - now_ifaces))))
+ new_ifaces = now_ifaces - starting_ifaces
+ if new_ifaces:
+ print()
+ print("New interface(s) detected: {}".format(
+ ", ".join(list(new_ifaces))))
+ return
+ time.sleep(1)
+ print('.', end='', flush=True)
+ attempts -= 1
+ print()
+ raise SystemExit("Failed to detect new network interface")
+
+
+if __name__ == '__main__':
+ main()