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/*
* Copyright (C) 2022 The Android Open Source Project
*
* 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 com.android.server.net;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
import android.content.Context;
import android.net.INetd;
import android.net.MacAddress;
import android.os.Handler;
import android.os.test.TestLooper;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import com.android.net.module.util.BaseNetdUnsolicitedEventListener;
import com.android.net.module.util.IBpfMap;
import com.android.net.module.util.InterfaceParams;
import com.android.net.module.util.Struct.U32;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
@RunWith(AndroidJUnit4.class)
@SmallTest
public final class BpfInterfaceMapUpdaterTest {
private static final int TEST_INDEX = 1;
private static final int TEST_INDEX2 = 2;
private static final String TEST_INTERFACE_NAME = "test1";
private static final String TEST_INTERFACE_NAME2 = "test2";
private final TestLooper mLooper = new TestLooper();
private BaseNetdUnsolicitedEventListener mListener;
private BpfInterfaceMapUpdater mUpdater;
@Mock private IBpfMap<U32, InterfaceMapValue> mBpfMap;
@Mock private INetd mNetd;
@Mock private Context mContext;
private class TestDependencies extends BpfInterfaceMapUpdater.Dependencies {
@Override
public IBpfMap<U32, InterfaceMapValue> getInterfaceMap() {
return mBpfMap;
}
@Override
public InterfaceParams getInterfaceParams(String ifaceName) {
if (ifaceName.equals(TEST_INTERFACE_NAME)) {
return new InterfaceParams(TEST_INTERFACE_NAME, TEST_INDEX,
MacAddress.ALL_ZEROS_ADDRESS);
} else if (ifaceName.equals(TEST_INTERFACE_NAME2)) {
return new InterfaceParams(TEST_INTERFACE_NAME2, TEST_INDEX2,
MacAddress.ALL_ZEROS_ADDRESS);
}
return null;
}
@Override
public INetd getINetd(Context ctx) {
return mNetd;
}
}
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
when(mNetd.interfaceGetList()).thenReturn(new String[] {TEST_INTERFACE_NAME});
mUpdater = new BpfInterfaceMapUpdater(mContext, new Handler(mLooper.getLooper()),
new TestDependencies());
}
private void verifyStartUpdater() throws Exception {
mUpdater.start();
mLooper.dispatchAll();
final ArgumentCaptor<BaseNetdUnsolicitedEventListener> listenerCaptor =
ArgumentCaptor.forClass(BaseNetdUnsolicitedEventListener.class);
verify(mNetd).registerUnsolicitedEventListener(listenerCaptor.capture());
mListener = listenerCaptor.getValue();
verify(mBpfMap).updateEntry(eq(new U32(TEST_INDEX)),
eq(new InterfaceMapValue(TEST_INTERFACE_NAME)));
}
@Test
public void testUpdateInterfaceMap() throws Exception {
verifyStartUpdater();
mListener.onInterfaceAdded(TEST_INTERFACE_NAME2);
mLooper.dispatchAll();
verify(mBpfMap).updateEntry(eq(new U32(TEST_INDEX2)),
eq(new InterfaceMapValue(TEST_INTERFACE_NAME2)));
// Check that when onInterfaceRemoved is called, nothing happens.
mListener.onInterfaceRemoved(TEST_INTERFACE_NAME);
mLooper.dispatchAll();
verifyNoMoreInteractions(mBpfMap);
}
}
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