Merge "Fix flaky testTcpBufferReset"

        String[] values = tcpBufferSizes.split(",");

        String rmemValues = String.join(" ", values[0], values[1], values[2]);

        String wmemValues = String.join(" ", values[3], values[4], values[5]);

        waitForIdle();

        verify(mMockNetd, atLeastOnce()).setTcpRWmemorySize(rmemValues, wmemValues);

        reset(mMockNetd);

    }

    @Test

    public void testTcpBufferReset() throws Exception {

        final String testTcpBufferSizes = "1,2,3,4,5,6";

        final NetworkRequest networkRequest = new NetworkRequest.Builder()

                .addTransportType(TRANSPORT_CELLULAR)

                .addCapability(NET_CAPABILITY_INTERNET)

                .build();

        final TestNetworkCallback networkCallback = new TestNetworkCallback();

        mCm.registerNetworkCallback(networkRequest, networkCallback);

        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);

        reset(mMockNetd);

        // Switching default network updates TCP buffer sizes.

        mCellNetworkAgent.connect(false);

        networkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);

        verifyTcpBufferSizeChange(ConnectivityService.DEFAULT_TCP_BUFFER_SIZES);

        // Change link Properties should have updated tcp buffer size.

        LinkProperties lp = new LinkProperties();

        lp.setTcpBufferSizes(testTcpBufferSizes);

        mCellNetworkAgent.sendLinkProperties(lp);

        networkCallback.expectCallback(CallbackRecord.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);

        verifyTcpBufferSizeChange(testTcpBufferSizes);

        // Clean up.

        mCellNetworkAgent.disconnect();

        networkCallback.expectCallback(CallbackRecord.LOST, mCellNetworkAgent);

        networkCallback.assertNoCallback();

        mCm.unregisterNetworkCallback(networkCallback);

    }

    @Test