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Ignore non-matching callbacks to fix flakiness

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This is a host-side tests that receives its network callbacks
through a custom AIDL that proxies them to this host-side
process. As this runs of the real callbacks from a real network,
this test receives unrelated callbacks – in particular calls to
onCapabilitiesUpdated to warn the process of updates of the
signal strength.
This skips these callbacks across the board by only matching
the expected callback. This will fix flakiness in the test.

Also, as a drive-by fix, this also checks the network in
the onBlockedStatusChanged callback. If the network object
is not the expected one, the test should not pass.

Bug: 160270536
Test: NetworkCallbackTests
Change-Id: I67c685ebfb2c5e2ee6f7615196eedea8292ca3ff
This commit is contained in:
Chalard Jean
2020-05-27 15:48:50 +09:00
parent 3cded8dc20
commit f70d762a55
1 changed files with 37 additions and 29 deletions
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66
tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkCallbackTest.java
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@@ -29,6 +29,7 @@ import static org.junit.Assert.fail;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.util.Log;
import org.junit.After;
import org.junit.Before;
@@ -141,15 +142,16 @@ public class NetworkCallbackTest extends AbstractRestrictBackgroundNetworkTestCa
}
public void expectBlockedStatusCallback(Network expectedNetwork, boolean expectBlocked) {
expectCallback(CallbackState.BLOCKED_STATUS, expectedNetwork,
expectBlocked);
expectCallback(CallbackState.BLOCKED_STATUS, expectedNetwork, expectBlocked);
}
public void waitBlockedStatusCallback(Network expectedNetwork, boolean expectBlocked) {
public void expectBlockedStatusCallbackEventually(Network expectedNetwork,
boolean expectBlocked) {
final long deadline = System.currentTimeMillis() + TEST_CALLBACK_TIMEOUT_MS;
do {
final CallbackInfo cb = nextCallback((int) (deadline - System.currentTimeMillis()));
if (cb.state == CallbackState.BLOCKED_STATUS) {
if (cb.state == CallbackState.BLOCKED_STATUS
&& cb.network.equals(expectedNetwork)) {
assertEquals(expectBlocked, cb.arg);
return;
}
@@ -157,17 +159,23 @@ public class NetworkCallbackTest extends AbstractRestrictBackgroundNetworkTestCa
fail("Didn't receive onBlockedStatusChanged()");
}
public void expectCapabilitiesCallback(Network expectedNetwork, boolean hasCapability,
int capability) {
final CallbackInfo cb = nextCallback(TEST_CALLBACK_TIMEOUT_MS);
final NetworkCapabilities cap = (NetworkCapabilities) cb.arg;
assertEquals(expectedNetwork, cb.network);
assertEquals(CallbackState.CAPABILITIES, cb.state);
if (hasCapability != cap.hasCapability(capability)) {
fail("NetworkCapabilities callback "
+ (hasCapability ? "missing expected" : "has unexpected")
+ " capability. " + cb);
}
public void expectCapabilitiesCallbackEventually(Network expectedNetwork, boolean hasCap,
int cap) {
final long deadline = System.currentTimeMillis() + TEST_CALLBACK_TIMEOUT_MS;
do {
final CallbackInfo cb = nextCallback((int) (deadline - System.currentTimeMillis()));
if (cb.state != CallbackState.CAPABILITIES
|| !expectedNetwork.equals(cb.network)
|| (hasCap != ((NetworkCapabilities) cb.arg).hasCapability(cap))) {
Log.i("NetworkCallbackTest#expectCapabilitiesCallback",
"Ignoring non-matching callback : " + cb);
continue;
}
// Found a match, return
return;
} while (System.currentTimeMillis() <= deadline);
fail("Didn't receive the expected callback to onCapabilitiesChanged(). Check the "
+ "log for a list of received callbacks, if any.");
}
}
@@ -194,8 +202,8 @@ public class NetworkCallbackTest extends AbstractRestrictBackgroundNetworkTestCa
// callback to ensure wifi is connected before the test and store the default network.
mNetwork = mTestNetworkCallback.expectAvailableCallbackAndGetNetwork();
// Check that the network is metered.
mTestNetworkCallback.expectCapabilitiesCallback(mNetwork, false /* hasCapability */,
NET_CAPABILITY_NOT_METERED);
mTestNetworkCallback.expectCapabilitiesCallbackEventually(mNetwork,
false /* hasCapability */, NET_CAPABILITY_NOT_METERED);
mTestNetworkCallback.expectBlockedStatusCallback(mNetwork, false);
}
@@ -215,28 +223,28 @@ public class NetworkCallbackTest extends AbstractRestrictBackgroundNetworkTestCa
// Enable restrict background
setRestrictBackground(true);
assertBackgroundNetworkAccess(false);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, true);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, true);
// Add to whitelist
addRestrictBackgroundWhitelist(mUid);
assertBackgroundNetworkAccess(true);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, false);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, false);
// Remove from whitelist
removeRestrictBackgroundWhitelist(mUid);
assertBackgroundNetworkAccess(false);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, true);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, true);
} finally {
mMeterednessConfiguration.resetNetworkMeteredness();
}
// Set to non-metered network
mMeterednessConfiguration.configureNetworkMeteredness(false);
mTestNetworkCallback.expectCapabilitiesCallback(mNetwork, true /* hasCapability */,
NET_CAPABILITY_NOT_METERED);
mTestNetworkCallback.expectCapabilitiesCallbackEventually(mNetwork,
true /* hasCapability */, NET_CAPABILITY_NOT_METERED);
try {
assertBackgroundNetworkAccess(true);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, false);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, false);
// Disable restrict background, should not trigger callback
setRestrictBackground(false);
@@ -253,30 +261,30 @@ public class NetworkCallbackTest extends AbstractRestrictBackgroundNetworkTestCa
// Enable Power Saver
setBatterySaverMode(true);
assertBackgroundNetworkAccess(false);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, true);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, true);
// Disable Power Saver
setBatterySaverMode(false);
assertBackgroundNetworkAccess(true);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, false);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, false);
} finally {
mMeterednessConfiguration.resetNetworkMeteredness();
}
// Set to non-metered network
mMeterednessConfiguration.configureNetworkMeteredness(false);
mTestNetworkCallback.expectCapabilitiesCallback(mNetwork, true /* hasCapability */,
NET_CAPABILITY_NOT_METERED);
mTestNetworkCallback.expectCapabilitiesCallbackEventually(mNetwork,
true /* hasCapability */, NET_CAPABILITY_NOT_METERED);
try {
// Enable Power Saver
setBatterySaverMode(true);
assertBackgroundNetworkAccess(false);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, true);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, true);
// Disable Power Saver
setBatterySaverMode(false);
assertBackgroundNetworkAccess(true);
mTestNetworkCallback.waitBlockedStatusCallback(mNetwork, false);
mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, false);
} finally {
mMeterednessConfiguration.resetNetworkMeteredness();
}