ConnectivityServiceTest: mark flaky test as such
This patch extracts into its own independent test a test sub-block looking
for a race condition when not waiting on handlers to become idle:
there is no way to prevent the race from not happening when looking for
it this way. This makes the test flakky.
This new independent test is tagged with @FlakkyTest(tolerance = 3).
Test: ConnectivityServiceTest passes, with higher probability.
Bug: 31479480
(cherry picked from commit c8c1027762d66c12c9c153ccbb8f80acdee8571c)
Change-Id: I3c702bd981ed80ed606be0fb52d61eb3d7195a6f
diff --git a/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java b/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
index c5a5678..794d028 100644
--- a/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
+++ b/services/tests/servicestests/src/com/android/server/ConnectivityServiceTest.java
@@ -68,6 +68,7 @@
import android.os.SystemClock;
import android.provider.Settings;
import android.test.AndroidTestCase;
+import android.test.FlakyTest;
import android.test.mock.MockContentResolver;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.SmallTest;
@@ -215,8 +216,20 @@
mService.waitForIdle();
assertEquals(i, mCm.getNetworkCapabilities(n).getSignalStrength());
}
+ }
+
+ @FlakyTest(tolerance = 3)
+ public void testNotWaitingForIdleCausesRaceConditions() {
+ // Bring up a network that we can use to send messages to ConnectivityService.
+ ConditionVariable cv = waitForConnectivityBroadcasts(1);
+ mWiFiNetworkAgent = new MockNetworkAgent(TRANSPORT_WIFI);
+ mWiFiNetworkAgent.connect(false);
+ waitFor(cv);
+ Network n = mWiFiNetworkAgent.getNetwork();
+ assertNotNull(n);
// Ensure that not calling waitForIdle causes a race condition.
+ final int attempts = 50; // Causes the test to take about 200ms on bullhead-eng.
for (int i = 0; i < attempts; i++) {
mWiFiNetworkAgent.setSignalStrength(i);
if (i != mCm.getNetworkCapabilities(n).getSignalStrength()) {