/*
* Copyright by the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.bitcoinj.protocols.channels;
import org.bitcoinj.core.*;
import org.bitcoinj.wallet.Wallet;
import org.bitcoinj.wallet.WalletExtension;
import org.bitcoin.paymentchannel.Protos;
import org.easymock.Capture;
import org.easymock.EasyMock;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.spongycastle.crypto.params.KeyParameter;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import static org.bitcoin.paymentchannel.Protos.TwoWayChannelMessage;
import static org.bitcoin.paymentchannel.Protos.TwoWayChannelMessage.MessageType.*;
import static org.bitcoinj.protocols.channels.PaymentChannelClient.VersionSelector.VERSION_1;
import static org.bitcoinj.protocols.channels.PaymentChannelClient.VersionSelector.VERSION_2;
import static org.bitcoinj.protocols.channels.PaymentChannelClient.VersionSelector.VERSION_2_ALLOW_1;
import static org.easymock.EasyMock.capture;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.replay;
import static org.junit.Assert.assertEquals;
@RunWith(Parameterized.class)
public class PaymentChannelClientTest {
private Wallet wallet;
private ECKey ecKey;
private Sha256Hash serverHash;
private IPaymentChannelClient.ClientConnection connection;
public Coin maxValue;
public Capture<TwoWayChannelMessage> clientVersionCapture;
public int defaultTimeWindow = 86340;
/**
* We use parameterized tests to run the client channel tests with each
* version of the channel.
*/
@Parameterized.Parameters(name = "{index}: PaymentChannelClientTest({0})")
public static Collection<PaymentChannelClient.DefaultClientChannelProperties> data() {
return Arrays.asList(
new PaymentChannelClient.DefaultClientChannelProperties() {
@Override
public PaymentChannelClient.VersionSelector versionSelector() { return VERSION_1;}
},
new PaymentChannelClient.DefaultClientChannelProperties() {
@Override
public PaymentChannelClient.VersionSelector versionSelector() { return VERSION_2_ALLOW_1;}
},
new PaymentChannelClient.DefaultClientChannelProperties() {
@Override
public PaymentChannelClient.VersionSelector versionSelector() { return VERSION_2;}
}
);
}
@Parameterized.Parameter
public IPaymentChannelClient.ClientChannelProperties clientChannelProperties;
@Before
public void before() {
wallet = createMock(Wallet.class);
ecKey = createMock(ECKey.class);
maxValue = Coin.COIN;
serverHash = Sha256Hash.of("serverId".getBytes());
connection = createMock(IPaymentChannelClient.ClientConnection.class);
clientVersionCapture = new Capture<TwoWayChannelMessage>();
}
@Test
public void shouldSendClientVersionOnChannelOpen() throws Exception {
PaymentChannelClient dut = new PaymentChannelClient(wallet, ecKey, maxValue, serverHash, null, clientChannelProperties, connection);
connection.sendToServer(capture(clientVersionCapture));
EasyMock.expect(wallet.getExtensions()).andReturn(new HashMap<String, WalletExtension>());
replay(connection, wallet);
dut.connectionOpen();
assertClientVersion(defaultTimeWindow);
}
@Test
public void shouldSendTimeWindowInClientVersion() throws Exception {
final long timeWindow = 4000;
KeyParameter userKey = null;
PaymentChannelClient dut =
new PaymentChannelClient(wallet, ecKey, maxValue, serverHash, userKey, new PaymentChannelClient.DefaultClientChannelProperties() {
@Override
public long timeWindow() {
return timeWindow;
}
@Override
public PaymentChannelClient.VersionSelector versionSelector() {
return clientChannelProperties.versionSelector();
}
}, connection);
connection.sendToServer(capture(clientVersionCapture));
EasyMock.expect(wallet.getExtensions()).andReturn(new HashMap<String, WalletExtension>());
replay(connection, wallet);
dut.connectionOpen();
assertClientVersion(4000);
}
private void assertClientVersion(long expectedTimeWindow) {
final TwoWayChannelMessage response = clientVersionCapture.getValue();
final TwoWayChannelMessage.MessageType type = response.getType();
assertEquals("Wrong type " + type, CLIENT_VERSION, type);
final Protos.ClientVersion clientVersion = response.getClientVersion();
final int major = clientVersion.getMajor();
final int requestedVersion = clientChannelProperties.versionSelector().getRequestedMajorVersion();
assertEquals("Wrong major version " + major, requestedVersion, major);
final long actualTimeWindow = clientVersion.getTimeWindowSecs();
assertEquals("Wrong timeWindow " + actualTimeWindow, expectedTimeWindow, actualTimeWindow );
}
}