autotests: README for twoNetworksTest

autotests/test2AP/README.txt

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+twoNetworksTest: connect to network A. disconnect from network A.
+                 connect to network B. disconnect from network B.
+
+Start with test-runner:
+   Test-runner looks at the hw.conf file and creates radios using
+   hwsim and reads the conf file(s) defined under [HOSTAPD] section
+
+1. Just start test-runner from under <iwd>/tools directory and it
+   will automatically run the tests.
+   cd <iwd>/tools
+   sudo ./test-runner -v
+
+Run stand-alone:
+Pre-requisites:
+1. Ensure you have hostapd installed.
+2. Verify that the kernel has mac80211_hwsim.
+
+Setup:
+1. Create radios using mac80211_hwsim. For most tests, we need 4 radios.
+    sudo modprobe mac80211_hwsim radios=4
+2. Enable network interfaces:
+    sudo ifconfig wlan2 up
+    sudo ifconfig wlan3 up
+
+Run test (e.g. twoNetworksTest test):
+1. Start hostapd, with a config file as an argument.
+    You can use the IntelWIFI.conf and PersonalWIFI.conf
+    file in autotests/test2AP directory.
+    sudo ./hostapd <path to autotests dir/test2AP/IntelWIFI.conf>
+    sudo ./hostapd <path to autotests dir/test2AP/PersonalWIFI.conf>
+
+Note: You might need to edit the *.conf file and change wln0 and wln1
+      to wlan0 and wlan1 respectively.
+
+2. Start iwd.
+    sudo iwd
+3. Start twoNetworksTest test (inside autotests/test2AP directory).
+    cd <iwd>/autotests/test2AP
+    ./twoNetworksTest.py
+
+Optional changes:
+1. You can provide your own config file to hostapd. If so, then you would need to
+    change the assert inside the test to the name of the ssid in your test.
+    self.assertEqual(connectedNetworkName, "IntelWIFI")