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/*
* Copyright (C) 2021 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.net.module.util;
import static com.android.testutils.MiscAsserts.assertThrows;
import static org.mockito.ArgumentMatchers.argThat;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import android.net.INetd;
import android.net.InterfaceConfigurationParcel;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import java.util.Arrays;
@RunWith(AndroidJUnit4.class)
@SmallTest
public class NetdUtilsTest {
@Mock private INetd mNetd;
private static final String IFACE = "TEST_IFACE";
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
}
private void setupFlagsForInterfaceConfiguration(String[] flags) throws Exception {
final InterfaceConfigurationParcel config = new InterfaceConfigurationParcel();
config.flags = flags;
when(mNetd.interfaceGetCfg(eq(IFACE))).thenReturn(config);
}
private void verifyMethodsAndArgumentsOfSetInterface(boolean ifaceUp) throws Exception {
final String[] flagsContainDownAndUp = new String[] {"flagA", "down", "flagB", "up"};
final String[] flagsForInterfaceDown = new String[] {"flagA", "down", "flagB"};
final String[] flagsForInterfaceUp = new String[] {"flagA", "up", "flagB"};
final String[] expectedFinalFlags;
setupFlagsForInterfaceConfiguration(flagsContainDownAndUp);
if (ifaceUp) {
// "down" flag will be removed from flagsContainDownAndUp when interface is up. Set
// expectedFinalFlags to flagsForInterfaceUp.
expectedFinalFlags = flagsForInterfaceUp;
NetdUtils.setInterfaceUp(mNetd, IFACE);
} else {
// "up" flag will be removed from flagsContainDownAndUp when interface is down. Set
// expectedFinalFlags to flagsForInterfaceDown.
expectedFinalFlags = flagsForInterfaceDown;
NetdUtils.setInterfaceDown(mNetd, IFACE);
}
verify(mNetd).interfaceSetCfg(
argThat(config ->
// Check if actual flags are the same as expected flags.
// TODO: Have a function in MiscAsserts to check if two arrays are the same.
CollectionUtils.all(Arrays.asList(expectedFinalFlags),
flag -> Arrays.asList(config.flags).contains(flag))
&& CollectionUtils.all(Arrays.asList(config.flags),
flag -> Arrays.asList(expectedFinalFlags).contains(flag))));
}
@Test
public void testSetInterfaceUp() throws Exception {
verifyMethodsAndArgumentsOfSetInterface(true /* ifaceUp */);
}
@Test
public void testSetInterfaceDown() throws Exception {
verifyMethodsAndArgumentsOfSetInterface(false /* ifaceUp */);
}
@Test
public void testRemoveAndAddFlags() throws Exception {
final String[] flags = new String[] {"flagA", "down", "flagB"};
// Add an invalid flag and expect to get an IllegalStateException.
assertThrows(IllegalStateException.class,
() -> NetdUtils.removeAndAddFlags(flags, "down" /* remove */, "u p" /* add */));
}
}
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