tests: Verify scan behavior

Signed-hostap: Jouni Malinen <j@w1.fi>

tests/hwsim/test_scan.py

@@ -0,0 +1,88 @@
+#!/usr/bin/python
+#
+# Scanning tests
+# Copyright (c) 2013, Jouni Malinen <j@w1.fi>
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import time
+import logging
+logger = logging.getLogger()
+
+import hostapd
+
+def check_scan(dev, params):
+    dev.dump_monitor()
+    id = dev.request("SCAN " + params)
+    if "FAIL" in id:
+        raise Exception("Failed to start scan")
+    id = int(id)
+
+    ev = dev.wait_event(["CTRL-EVENT-SCAN-STARTED"])
+    if ev is None:
+        raise Exception("Scan did not start")
+    if "id=" + str(id) not in ev:
+        raise Exception("Scan id not included in start event")
+
+    ev = dev.wait_event(["CTRL-EVENT-SCAN-RESULTS"])
+    if ev is None:
+        raise Exception("Scan did not complete")
+    if "id=" + str(id) not in ev:
+        raise Exception("Scan id not included in completed event")
+
+def test_scan(dev, apdev):
+    """Control interface behavior on scan parameters"""
+    hostapd.add_ap(apdev[0]['ifname'], { "ssid": "test-scan" })
+    bssid = apdev[0]['bssid']
+
+    logger.info("Full scan")
+    check_scan(dev[0], "use_id=1")
+
+    logger.info("Limited channel scan")
+    check_scan(dev[0], "freq=2412-2462,5180 use_id=1")
+    if int(dev[0].get_bss(bssid)['age']) > 1:
+        raise Exception("Unexpectedly old BSS entry")
+
+    # wait long enough to allow next scans to be verified not to find the AP
+    time.sleep(2)
+
+    logger.info("Passive single-channel scan")
+    check_scan(dev[0], "freq=2457 passive=1 use_id=1")
+    logger.info("Active single-channel scan")
+    check_scan(dev[0], "freq=2452 passive=0 use_id=1")
+    if int(dev[0].get_bss(bssid)['age']) < 2:
+        raise Exception("Unexpectedly updated BSS entry")
+
+    logger.info("Active single-channel scan on AP's operating channel")
+    check_scan(dev[0], "freq=2412 passive=0 use_id=1")
+    if int(dev[0].get_bss(bssid)['age']) > 1:
+        raise Exception("Unexpectedly old BSS entry")
+
+def test_scan_only(dev, apdev):
+    """Control interface behavior on scan parameters with type=only"""
+    hostapd.add_ap(apdev[0]['ifname'], { "ssid": "test-scan" })
+    bssid = apdev[0]['bssid']
+
+    logger.info("Full scan")
+    check_scan(dev[0], "type=only use_id=1")
+
+    logger.info("Limited channel scan")
+    check_scan(dev[0], "type=only freq=2412-2462,5180 use_id=1")
+    if int(dev[0].get_bss(bssid)['age']) > 1:
+        raise Exception("Unexpectedly old BSS entry")
+
+    # wait long enough to allow next scans to be verified not to find the AP
+    time.sleep(2)
+
+    logger.info("Passive single-channel scan")
+    check_scan(dev[0], "type=only freq=2457 passive=1 use_id=1")
+    logger.info("Active single-channel scan")
+    check_scan(dev[0], "type=only freq=2452 passive=0 use_id=1")
+    if int(dev[0].get_bss(bssid)['age']) < 2:
+        raise Exception("Unexpectedly updated BSS entry")
+
+    logger.info("Active single-channel scan on AP's operating channel")
+    check_scan(dev[0], "type=only freq=2412 passive=0 use_id=1")
+    if int(dev[0].get_bss(bssid)['age']) > 1:
+        raise Exception("Unexpectedly old BSS entry")

tests/hwsim/wpasupplicant.py

@@ -416,7 +416,7 @@ class WpaSupplicant:
             return self.group_form_result(ev, expect_failure, go_neg_res)
         raise Exception("P2P_CONNECT failed")
 
-    def wait_event(self, events, timeout):
+    def wait_event(self, events, timeout=10):
         count = 0
         while count < timeout * 10:
             count = count + 1