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/*
* Copyright (C) 2016 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.assertFalse;
import static org.junit.Assert.assertTrue;
import androidx.test.filters.SmallTest;
import org.junit.Test;
import java.util.HashMap;
import java.util.Map;
/**
* Unit tests for {@link com.android.server.wifi.IMSIParameter}.
*/
@SmallTest
public class IMSIParameterTest {
/**
* Data points for testing function {@link IMSIParameter#build}.
*/
private static final Map<String, IMSIParameter> BUILD_PARAM_TEST_MAP = new HashMap<>();
static {
BUILD_PARAM_TEST_MAP.put(null, null);
BUILD_PARAM_TEST_MAP.put("", null);
BUILD_PARAM_TEST_MAP.put("1234a123", null); // IMSI contained invalid character.
BUILD_PARAM_TEST_MAP.put("1234567890123451", null); // IMSI exceeding max length.
BUILD_PARAM_TEST_MAP.put("123456789012345", new IMSIParameter("123456789012345", false));
BUILD_PARAM_TEST_MAP.put("1234*", new IMSIParameter("1234", true));
}
/**
* Verify the expectations of {@link IMSIParameter#build} function using the predefined
* test data {@link #BUILD_PARAM_TEST_MAP}.
*
* @throws Exception
*/
@Test
public void verifyBuildIMSIParameter() throws Exception {
for (Map.Entry<String, IMSIParameter> entry : BUILD_PARAM_TEST_MAP.entrySet()) {
assertEquals(entry.getValue(), IMSIParameter.build(entry.getKey()));
}
}
/**
* Verify that attempt to match a null IMSI will not cause any crash and should return false.
*
* @throws Exception
*/
@Test
public void matchesNullImsi() throws Exception {
IMSIParameter param = new IMSIParameter("1234", false);
assertFalse(param.matchesImsi(null));
}
/**
* Verify that an IMSIParameter containing a full IMSI will only match against an IMSI of the
* same value.
*
* @throws Exception
*/
@Test
public void matchesImsiWithFullImsi() throws Exception {
IMSIParameter param = new IMSIParameter("1234", false);
// Full IMSI requires exact matching.
assertFalse(param.matchesImsi("123"));
assertFalse(param.matchesImsi("12345"));
assertTrue(param.matchesImsi("1234"));
}
/**
* Verify that an IMSIParameter containing a prefix IMSI will match against any IMSI that
* starts with the same prefix.
*
* @throws Exception
*/
@Test
public void matchesImsiWithPrefixImsi() throws Exception {
IMSIParameter param = new IMSIParameter("1234", true);
// Prefix IMSI will match any IMSI that starts with the same prefix.
assertFalse(param.matchesImsi("123"));
assertTrue(param.matchesImsi("12345"));
assertTrue(param.matchesImsi("1234"));
}
/**
* Verify that attempt to match a null MCC-MNC will not cause any crash and should return
* false.
*
* @throws Exception
*/
@Test
public void matchesNullMccMnc() throws Exception {
IMSIParameter param = new IMSIParameter("1234", false);
assertFalse(param.matchesMccMnc(null));
}
/**
* Verify that an IMSIParameter containing a full IMSI will only match against a 6 digit
* MCC-MNC that is a prefix of the IMSI.
*
* @throws Exception
*/
@Test
public void matchesMccMncFullImsi() throws Exception {
IMSIParameter param = new IMSIParameter("1234567890", false);
assertFalse(param.matchesMccMnc("1234567")); // Invalid length for MCC-MNC
assertFalse(param.matchesMccMnc("12345")); // Invalid length for MCC-MNC
assertTrue(param.matchesMccMnc("123456"));
}
/**
* Verify that an IMSIParameter containing an IMSI prefix that's less than 6 digits
* will match against any 6-digit MCC-MNC that starts with the same prefix.
*
* @throws Exception
*/
@Test
public void matchesMccMncWithPrefixImsiLessThanMccMncLength() throws Exception {
IMSIParameter param = new IMSIParameter("12345", true);
assertFalse(param.matchesMccMnc("123448")); // Prefix mismatch
assertFalse(param.matchesMccMnc("12345")); // Invalid length for MCC-MNC
assertFalse(param.matchesMccMnc("1234567")); // Invalid length for MCC-MNC
assertTrue(param.matchesMccMnc("123457"));
assertTrue(param.matchesMccMnc("123456"));
}
/**
* Verify that an IMSIParameter containing an IMSI prefix that's more than 6 digits
* will only match against a 6-digit MCC-MNC that matches the first 6-digit of the prefix.
*
* @throws Exception
*/
@Test
public void matchesMccMncWithPrefixImsiMoreThanMccMncLength() throws Exception {
IMSIParameter param = new IMSIParameter("1234567890", true);
assertFalse(param.matchesMccMnc("12345")); // Invalid length for MCC-MNC
assertFalse(param.matchesMccMnc("1234567")); // Invalid length for MCC-MNC
assertTrue(param.matchesMccMnc("123456"));
}
}
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