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/*
* Copyright (C) 2019 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.wifi;
import static org.junit.Assert.*;
import static org.mockito.Mockito.*;
import android.util.Xml;
import androidx.test.filters.SmallTest;
import com.android.internal.util.FastXmlSerializer;
import com.android.server.wifi.util.WifiConfigStoreEncryptionUtil;
import org.junit.Before;
import org.junit.Test;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlSerializer;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;
/**
* Unit tests for {@link com.android.server.wifi.RandomizedMacStoreData}.
*/
@SmallTest
public class RandomizedMacStoreDataTest {
private static final String TEST_MAC_ADDRESS_1 = "da:a1:19:0:0:0";
private static final String TEST_MAC_ADDRESS_2 = "ff:ff:ff:0:0:0";
private static final String TEST_CONFIG_KEY_1 = "TP-LINK_B6C1_5GWPA_PSK";
private static final String TEST_CONFIG_KEY_2 = "GoogleGuest-LegacyNONE";
private RandomizedMacStoreData mRandomizedMacStoreData;
@Before
public void setUp() throws Exception {
mRandomizedMacStoreData = new RandomizedMacStoreData();
}
/**
* Helper function for serializing data to a XML block.
*
* @return byte[] of the XML data
* @throws Exception
*/
private byte[] serializeData() throws Exception {
final XmlSerializer out = new FastXmlSerializer();
final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
out.setOutput(outputStream, StandardCharsets.UTF_8.name());
mRandomizedMacStoreData.serializeData(out, mock(WifiConfigStoreEncryptionUtil.class));
out.flush();
return outputStream.toByteArray();
}
/**
* Helper function for parsing data from a XML block.
*
* @param data XML data to parse from
* @return Map from configKey to MAC address
* @throws Exception
*/
private Map<String, String> deserializeData(byte[] data) throws Exception {
final XmlPullParser in = Xml.newPullParser();
final ByteArrayInputStream inputStream = new ByteArrayInputStream(data);
in.setInput(inputStream, StandardCharsets.UTF_8.name());
mRandomizedMacStoreData.deserializeData(in, in.getDepth(),
WifiConfigStore.ENCRYPT_CREDENTIALS_CONFIG_STORE_DATA_VERSION,
mock(WifiConfigStoreEncryptionUtil.class));
return mRandomizedMacStoreData.getMacMapping();
}
/**
* Verify that serializing empty Map causes no crash and no data should be serialized.
*
* @throws Exception
*/
@Test
public void serializeEmptyMap() throws Exception {
assertEquals(0, serializeData().length);
}
/**
* Verify that parsing an empty data doesn't cause any crash and no configuration should
* be deserialized.
*
* @throws Exception
*/
@Test
public void deserializeEmptyData() throws Exception {
assertTrue(deserializeData(new byte[0]).isEmpty());
}
/**
* Verify that RandomizedMacStoreData is written to
* {@link WifiConfigStore#STORE_FILE_SHARED_GENERAL}.
*
* @throws Exception
*/
@Test
public void getSharedStoreFileId() throws Exception {
assertEquals(WifiConfigStore.STORE_FILE_SHARED_GENERAL,
mRandomizedMacStoreData.getStoreFileId());
}
/**
* Verify that MAC address mapping data is serialized and deserialized correctly.
* @throws Exception
*/
@Test
public void testSerializeDeserialize() throws Exception {
Map<String, String> macMap = new HashMap<>();
macMap.put(TEST_CONFIG_KEY_1, TEST_MAC_ADDRESS_1);
macMap.put(TEST_CONFIG_KEY_2, TEST_MAC_ADDRESS_2);
mRandomizedMacStoreData.setMacMapping(macMap);
byte[] data = serializeData();
Map<String, String> deserializedMap = deserializeData(data);
assertEquals(macMap, deserializedMap);
}
}
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