LineageOS/android_packages_modules_Connectivity
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Merge "Test that if an RA sets the same prefix as DNS, nothing happens."

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Lorenzo Colitti
2020-05-24 10:59:40 +00:00
committed by Gerrit Code Review
parent b10df0da89 16b28e2b22
commit eafdd034f8
1 changed files with 25 additions and 1 deletions
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26
tests/net/java/com/android/server/ConnectivityServiceTest.java
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@@ -6354,12 +6354,36 @@ public class ConnectivityServiceTest {
expectNat64PrefixChange(callback, mCellNetworkAgent, pref64FromDns);
inOrder.verify(mMockNetd).clatdStart(iface, pref64FromDns.toString());
// If the RA prefix reappears, clatd is restarted and prefix discovery is stopped.
// If an RA advertises the same prefix that was discovered by DNS, nothing happens: prefix
// discovery is not stopped, and there are no callbacks.
lp.setNat64Prefix(pref64FromDns);
mCellNetworkAgent.sendLinkProperties(lp);
callback.assertNoCallback();
inOrder.verify(mMockNetd, never()).clatdStop(iface);
inOrder.verify(mMockNetd, never()).clatdStart(eq(iface), anyString());
inOrder.verify(mMockDnsResolver, never()).stopPrefix64Discovery(netId);
inOrder.verify(mMockDnsResolver, never()).startPrefix64Discovery(netId);
// If the RA is later withdrawn, nothing happens again.
lp.setNat64Prefix(null);
mCellNetworkAgent.sendLinkProperties(lp);
callback.assertNoCallback();
inOrder.verify(mMockNetd, never()).clatdStop(iface);
inOrder.verify(mMockNetd, never()).clatdStart(eq(iface), anyString());
inOrder.verify(mMockDnsResolver, never()).stopPrefix64Discovery(netId);
inOrder.verify(mMockDnsResolver, never()).startPrefix64Discovery(netId);
// If the RA prefix changes, clatd is restarted and prefix discovery is stopped.
lp.setNat64Prefix(pref64FromRa);
mCellNetworkAgent.sendLinkProperties(lp);
expectNat64PrefixChange(callback, mCellNetworkAgent, pref64FromRa);
inOrder.verify(mMockNetd).clatdStop(iface);
inOrder.verify(mMockDnsResolver).stopPrefix64Discovery(netId);
// Stopping prefix discovery results in a prefix removed notification.
mService.mNetdEventCallback.onNat64PrefixEvent(netId, false /* added */,
pref64FromDnsStr, 96);
inOrder.verify(mMockNetd).clatdStart(iface, pref64FromRa.toString());
inOrder.verify(mMockDnsResolver, never()).startPrefix64Discovery(netId);