WifiNetworkFactory: Send match callback on registration

If the UI registers its callback to the platform and if we already have
some matching results for the request, send it immediately to the UI.
Otherwise, we'll need to wait for the next scan results to present users
with matches.

Bug: 134712530
Test: atest com.android.server.wifi
Test: Manually verified with CtsVerifier tests that the UI does not
start out with a blank page (because the matched networks are already
found by using the cached results).

Change-Id: Ice7f89952c0a71c181ea5de58e417c02e7f2bf91

1 files changed, 49 insertions, 12 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/WifiNetworkFactoryTest.java b/tests/wifitests/src/com/android/server/wifi/WifiNetworkFactoryTest.java
index c5d401a21..ad6394c99 100644
--- a/tests/wifitests/src/com/android/server/wifi/WifiNetworkFactoryTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/WifiNetworkFactoryTest.java
@@ -1001,13 +1001,8 @@ public class WifiNetworkFactoryTest extends WifiBaseTest {
 
         verifyPeriodicScans(0, PERIODIC_SCAN_INTERVAL_MS);
 
-        ArgumentCaptor<List<ScanResult>> matchedScanResultsCaptor =
-                ArgumentCaptor.forClass(List.class);
-        verify(mNetworkRequestMatchCallback).onMatch(matchedScanResultsCaptor.capture());
-
-        assertNotNull(matchedScanResultsCaptor.getValue());
         // We expect no network match in this case.
-        assertEquals(0, matchedScanResultsCaptor.getValue().size());
+        verify(mNetworkRequestMatchCallback, never()).onMatch(any());
 
         // Don't increment metrics until we have a match
         verify(mWifiMetrics, never()).incrementNetworkRequestApiMatchSizeHistogram(anyInt());
@@ -1046,13 +1041,8 @@ public class WifiNetworkFactoryTest extends WifiBaseTest {
 
         verifyPeriodicScans(0, PERIODIC_SCAN_INTERVAL_MS);
 
-        ArgumentCaptor<List<ScanResult>> matchedScanResultsCaptor =
-                ArgumentCaptor.forClass(List.class);
-        verify(mNetworkRequestMatchCallback).onMatch(matchedScanResultsCaptor.capture());
-
-        assertNotNull(matchedScanResultsCaptor.getValue());
         // We expect no network match in this case.
-        assertEquals(0, matchedScanResultsCaptor.getValue().size());
+        verify(mNetworkRequestMatchCallback, never()).onMatch(any());
     }
 
     /**
@@ -2583,6 +2573,53 @@ public class WifiNetworkFactoryTest extends WifiBaseTest {
         verify(mWifiMetrics).incrementNetworkRequestApiNumUserApprovalBypass();
     }
 
+    /**
+     * Verify network specifier matching for a specifier containing a specific SSID match using
+     * 4 WPA_PSK scan results, each with unique SSID when the UI callback registration is delayed.
+     */
+    @Test
+    public void testNetworkSpecifierMatchSuccessUsingLiteralSsidMatchCallbackRegistrationDelayed()
+            throws Exception {
+        // Setup scan data for open networks.
+        setupScanData(SCAN_RESULT_TYPE_WPA_PSK,
+                TEST_SSID_1, TEST_SSID_2, TEST_SSID_3, TEST_SSID_4);
+
+        // Setup network specifier for open networks.
+        PatternMatcher ssidPatternMatch =
+                new PatternMatcher(TEST_SSID_1, PatternMatcher.PATTERN_LITERAL);
+        Pair<MacAddress, MacAddress> bssidPatternMatch =
+                Pair.create(MacAddress.ALL_ZEROS_ADDRESS, MacAddress.ALL_ZEROS_ADDRESS);
+        WifiConfiguration wifiConfiguration = new WifiConfiguration();
+        wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
+        WifiNetworkSpecifier specifier = new WifiNetworkSpecifier(
+                ssidPatternMatch, bssidPatternMatch, wifiConfiguration, TEST_UID_1,
+                TEST_PACKAGE_NAME_1);
+
+        mNetworkRequest.networkCapabilities.setNetworkSpecifier(specifier);
+        mWifiNetworkFactory.needNetworkFor(mNetworkRequest, 0);
+
+        validateUiStartParams(true);
+
+        verifyPeriodicScans(0, PERIODIC_SCAN_INTERVAL_MS);
+
+        // Ensure we did not send any match callbacks, until the callback is registered
+        verify(mNetworkRequestMatchCallback, never()).onMatch(any());
+
+        // Register the callback & ensure we triggered the on match callback.
+        mWifiNetworkFactory.addCallback(mAppBinder, mNetworkRequestMatchCallback,
+                TEST_CALLBACK_IDENTIFIER);
+        ArgumentCaptor<List<ScanResult>> matchedScanResultsCaptor =
+                ArgumentCaptor.forClass(List.class);
+        verify(mNetworkRequestMatchCallback).onMatch(matchedScanResultsCaptor.capture());
+
+        assertNotNull(matchedScanResultsCaptor.getValue());
+        // We only expect 1 network match in this case.
+        validateScanResults(matchedScanResultsCaptor.getValue(), mTestScanDatas[0].getResults()[0]);
+
+        verify(mWifiMetrics).incrementNetworkRequestApiMatchSizeHistogram(
+                matchedScanResultsCaptor.getValue().size());
+    }
+
     private void sendNetworkRequestAndSetupForConnectionStatus() throws RemoteException {
         sendNetworkRequestAndSetupForConnectionStatus(TEST_SSID_1);
     }