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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.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
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.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
/**
* Unit tests for {@link com.android.server.wifi.SsidSetStoreData}.
*/
@SmallTest
public class SsidSetStoreDataTest {
private static final String TEST_NOTIFIER_NAME = "TestNetwork";
private static final String TEST_SSID1 = "SSID 1";
private static final String TEST_SSID2 = "SSID 2";
private static final String TEST_SSID_SET_XML_STRING =
"<set name=\"SSIDSet\">\n"
+ "<string>" + TEST_SSID1 + "</string>\n"
+ "<string>" + TEST_SSID2 + "</string>\n"
+ "</set>\n";
private static final byte[] TEST_SSID_SET_XML_BYTES =
TEST_SSID_SET_XML_STRING.getBytes(StandardCharsets.UTF_8);
@Mock SsidSetStoreData.DataSource mDataSource;
SsidSetStoreData mSsidSetStoreData;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
mSsidSetStoreData = new SsidSetStoreData(TEST_NOTIFIER_NAME, mDataSource);
}
/**
* 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());
mSsidSetStoreData.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
* @throws Exception
*/
private void deserializeData(byte[] data) throws Exception {
final XmlPullParser in = Xml.newPullParser();
final ByteArrayInputStream inputStream = new ByteArrayInputStream(data);
in.setInput(inputStream, StandardCharsets.UTF_8.name());
mSsidSetStoreData.deserializeData(in, in.getDepth(),
WifiConfigStore.ENCRYPT_CREDENTIALS_CONFIG_STORE_DATA_VERSION,
mock(WifiConfigStoreEncryptionUtil.class));
}
/**
* 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 {
when(mDataSource.getSsids()).thenReturn(new HashSet<String>());
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 deserializeEmptyStoreData() throws Exception {
deserializeData(new byte[0]);
verify(mDataSource, never()).setSsids(any(Set.class));
}
/**
* Verify that SsidSetStoreData is written to
* {@link WifiConfigStore#STORE_FILE_NAME_USER_GENERAL}.
*
* @throws Exception
*/
@Test
public void getUserStoreFileId() throws Exception {
assertEquals(WifiConfigStore.STORE_FILE_USER_GENERAL,
mSsidSetStoreData.getStoreFileId());
}
/**
* Verify that the store data is serialized correctly, matches the predefined test XML data.
*
* @throws Exception
*/
@Test
public void serializeSsidSet() throws Exception {
Set<String> ssidSet = new HashSet<>();
ssidSet.add(TEST_SSID1);
ssidSet.add(TEST_SSID2);
when(mDataSource.getSsids()).thenReturn(ssidSet);
byte[] actualData = serializeData();
assertTrue(Arrays.equals(TEST_SSID_SET_XML_BYTES, actualData));
}
/**
* Verify that the store data is deserialized correctly using the predefined test XML data.
*
* @throws Exception
*/
@Test
public void deserializeSsidSet() throws Exception {
Set<String> ssidSet = new HashSet<>();
ssidSet.add(TEST_SSID1);
ssidSet.add(TEST_SSID2);
deserializeData(TEST_SSID_SET_XML_BYTES);
verify(mDataSource).setSsids(eq(ssidSet));
}
/**
* Verify that a XmlPullParserException will be thrown when parsing a SSIDSet set with an
* unknown tag.
*
* @throws Exception
*/
@Test(expected = XmlPullParserException.class)
public void parseSetWithUnknownTag() throws Exception {
String ssidSet =
"<set name=\"SSIDSet\">\n"
+ "<string>" + TEST_SSID1 + "</string>\n"
+ "<string>" + TEST_SSID2 + "</string>\n"
+ "<Unknown>" + "badInput" + "</Unknown>" // Unknown tag.
+ "</set>\n";
deserializeData(ssidSet.getBytes(StandardCharsets.UTF_8));
}
}
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