adb: win32: test USB kick on resume from sleep/hibernation
Unittest for a5b06b0ff8d7c99ce2678f61536cbf1430783dba. Works by
simulating resume from sleep/hibernation by sending a Windows message.
Test: python3 -m unittest test_adb.PowerTest
Change-Id: I78510f30c012f68eda39764da522dbf8d03f2576
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>
diff --git a/adb/test_adb.py b/adb/test_adb.py
index cde2b22..7e73818 100755
--- a/adb/test_adb.py
+++ b/adb/test_adb.py
@@ -490,6 +490,58 @@
self.assertEqual(_devices(server_port), [])
+@unittest.skipUnless(sys.platform == "win32", "requires Windows")
+class PowerTest(unittest.TestCase):
+ def test_resume_usb_kick(self):
+ """Resuming from sleep/hibernate should kick USB devices."""
+ try:
+ usb_serial = subprocess.check_output(["adb", "-d", "get-serialno"]).strip()
+ except subprocess.CalledProcessError:
+ # If there are multiple USB devices, we don't have a way to check whether the selected
+ # device is USB.
+ raise unittest.SkipTest('requires single USB device')
+
+ try:
+ serial = subprocess.check_output(["adb", "get-serialno"]).strip()
+ except subprocess.CalledProcessError:
+ # Did you forget to select a device with $ANDROID_SERIAL?
+ raise unittest.SkipTest('requires $ANDROID_SERIAL set to a USB device')
+
+ # Test only works with USB devices because adb _power_notification_thread does not kick
+ # non-USB devices on resume event.
+ if serial != usb_serial:
+ raise unittest.SkipTest('requires USB device')
+
+ # Run an adb shell command in the background that takes a while to complete.
+ proc = subprocess.Popen(['adb', 'shell', 'sleep', '5'])
+
+ # Wait for startup of adb server's _power_notification_thread.
+ time.sleep(0.1)
+
+ # Simulate resuming from sleep/hibernation by sending Windows message.
+ import ctypes
+ from ctypes import wintypes
+ HWND_BROADCAST = 0xffff
+ WM_POWERBROADCAST = 0x218
+ PBT_APMRESUMEAUTOMATIC = 0x12
+
+ PostMessageW = ctypes.windll.user32.PostMessageW
+ PostMessageW.restype = wintypes.BOOL
+ PostMessageW.argtypes = (wintypes.HWND, wintypes.UINT, wintypes.WPARAM, wintypes.LPARAM)
+ result = PostMessageW(HWND_BROADCAST, WM_POWERBROADCAST, PBT_APMRESUMEAUTOMATIC, 0)
+ if not result:
+ raise ctypes.WinError()
+
+ # Wait for connection to adb shell to be broken by _power_notification_thread detecting the
+ # Windows message.
+ start = time.time()
+ proc.wait()
+ end = time.time()
+
+ # If the power event was detected, the adb shell command should be broken very quickly.
+ self.assertLess(end - start, 2)
+
+
def main():
"""Main entrypoint."""
random.seed(0)