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/*
* Copyright (C) 2017 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.mockito.Mock;
import org.mockito.MockitoAnnotations;
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.DeletedEphemeralSsidsStoreData}.
*/
@SmallTest
public class DeletedEphemeralSsidsStoreDataTest {
private static final String TEST_SSID1 = "SSID 1";
private static final String TEST_SSID2 = "SSID 2";
private static final long TEST_SSID1_TSTAMP = 6837367L;
private static final long TEST_SSID2_TSTAMP = 4567367L;
private static final String TEST_SSID_LIST_XML_STRING_MAP =
"<map name=\"SSIDList\">\n"
+ "<long name=\"" + TEST_SSID1 + "\" value=\"" + TEST_SSID1_TSTAMP + "\" />\n"
+ "<long name=\"" + TEST_SSID2 + "\" value=\"" + TEST_SSID2_TSTAMP + "\" />\n"
+ "</map>\n";
private static final String TEST_SSID_LIST_XML_STRING_SET =
"<set name=\"SSIDList\">\n"
+ "<string>" + TEST_SSID1 + "</string>\n"
+ "<string>" + TEST_SSID2 + "</string>\n"
+ "</set>\n";
@Mock Clock mClock;
private DeletedEphemeralSsidsStoreData mDeletedEphemeralSsidsStoreData;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
mDeletedEphemeralSsidsStoreData = new DeletedEphemeralSsidsStoreData(mClock);
}
/**
* Helper function for serializing configuration 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());
mDeletedEphemeralSsidsStoreData.serializeData(
out, mock(WifiConfigStoreEncryptionUtil.class));
out.flush();
return outputStream.toByteArray();
}
/**
* Helper function for parsing configuration data from a XML block.
*
* @param data XML data to parse from
* @return SSID list
* @throws Exception
*/
private Map<String, Long> deserializeData(byte[] data) throws Exception {
final XmlPullParser in = Xml.newPullParser();
final ByteArrayInputStream inputStream = new ByteArrayInputStream(data);
in.setInput(inputStream, StandardCharsets.UTF_8.name());
mDeletedEphemeralSsidsStoreData.deserializeData(in, in.getDepth(),
WifiConfigStore.ENCRYPT_CREDENTIALS_CONFIG_STORE_DATA_VERSION,
mock(WifiConfigStoreEncryptionUtil.class));
return mDeletedEphemeralSsidsStoreData.getSsidToTimeMap();
}
/**
* Verify that serializing the user store data without any configuration doesn't cause any
* crash and no data should be serialized.
*
* @throws Exception
*/
@Test
public void serializeEmptyConfigs() 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 DeletedEphemeralSsidsStoreData is written to
* {@link WifiConfigStore#STORE_FILE_NAME_USER_GENERAL}.
*
* @throws Exception
*/
@Test
public void getUserStoreFileId() throws Exception {
assertEquals(WifiConfigStore.STORE_FILE_USER_GENERAL,
mDeletedEphemeralSsidsStoreData.getStoreFileId());
}
/**
* Verify that user store SSID list is serialized correctly, matches the predefined test
* XML data.
*
* @throws Exception
*/
@Test
public void serializeSsidToTimeMap() throws Exception {
Map<String, Long> ssidToTimeMap = new HashMap<>();
ssidToTimeMap.put(TEST_SSID1, TEST_SSID1_TSTAMP);
ssidToTimeMap.put(TEST_SSID2, TEST_SSID2_TSTAMP);
mDeletedEphemeralSsidsStoreData.setSsidToTimeMap(ssidToTimeMap);
byte[] actualData = serializeData();
assertEquals(TEST_SSID_LIST_XML_STRING_MAP, new String(actualData));
}
/**
* Verify that user store SSID list is deserialized correctly using the predefined test XML
* data.
*
* @throws Exception
*/
@Test
public void deserializeSsidToTimeMap() throws Exception {
Map<String, Long> ssidToTimeMap = new HashMap<>();
ssidToTimeMap.put(TEST_SSID1, TEST_SSID1_TSTAMP);
ssidToTimeMap.put(TEST_SSID2, TEST_SSID2_TSTAMP);
assertEquals(ssidToTimeMap, deserializeData(TEST_SSID_LIST_XML_STRING_MAP.getBytes()));
}
/**
* Verify that user store SSID list is deserialized correctly using the predefined test XML
* data.
* This simulates the config store migration from the previous set representation to the new
* map of ssid to timestamp representation.
*
* @throws Exception
*/
@Test
public void deserializeSsidToTimeMapFromSet() throws Exception {
long currentTimeMs = 67934838L;
when(mClock.getWallClockMillis()).thenReturn(currentTimeMs);
Map<String, Long> ssidToTimeMap = new HashMap<>();
ssidToTimeMap.put(TEST_SSID1, currentTimeMs);
ssidToTimeMap.put(TEST_SSID2, currentTimeMs);
assertEquals(ssidToTimeMap, deserializeData(TEST_SSID_LIST_XML_STRING_SET.getBytes()));
}
}
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