| /* |
| * 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 android.net.wifi.util; |
| |
| import static android.net.wifi.util.HexEncoding.decode; |
| import static android.net.wifi.util.HexEncoding.encode; |
| import static android.net.wifi.util.HexEncoding.encodeToString; |
| |
| import junit.framework.TestCase; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.Arrays; |
| import java.util.Locale; |
| |
| /** Copied from {@link libcore.libcore.util.HexEncodingTest}. */ |
| public class HexEncodingTest extends TestCase { |
| |
| public void testEncodeByte() { |
| Object[][] testCases = new Object[][]{ |
| {0x01, "01"}, |
| {0x09, "09"}, |
| {0x0A, "0A"}, |
| {0x0F, "0F"}, |
| {0x10, "10"}, |
| {0x1F, "1F"}, |
| {0x20, "20"}, |
| {0x7F, "7F"}, |
| {0x80, "80"}, |
| {0xFF, "FF"}, |
| }; |
| for (Object[] testCase : testCases) { |
| Number toEncode = (Number) testCase[0]; |
| String expected = (String) testCase[1]; |
| |
| String actualUpper = encodeToString(toEncode.byteValue(), true /* upperCase */); |
| assertEquals(upper(expected), actualUpper); |
| |
| String actualLower = encodeToString(toEncode.byteValue(), false /* upperCase */); |
| assertEquals(lower(expected), actualLower); |
| } |
| } |
| |
| public void testEncodeBytes() { |
| Object[][] testCases = new Object[][]{ |
| {"avocados".getBytes(StandardCharsets.UTF_8), "61766F6361646F73"}, |
| }; |
| |
| for (Object[] testCase : testCases) { |
| byte[] bytes = (byte[]) testCase[0]; |
| String encodedLower = lower((String) testCase[1]); |
| String encodedUpper = upper((String) testCase[1]); |
| |
| assertArraysEqual(encodedUpper.toCharArray(), encode(bytes)); |
| assertArraysEqual(encodedUpper.toCharArray(), encode(bytes, true /* upperCase */)); |
| assertArraysEqual(encodedLower.toCharArray(), encode(bytes, false /* upperCase */)); |
| |
| assertArraysEqual(bytes, decode(encode(bytes), false /* allowSingleChar */)); |
| |
| // Make sure we can handle lower case hex encodings as well. |
| assertArraysEqual(bytes, |
| decode(encodedLower.toCharArray(), false /* allowSingleChar */)); |
| } |
| } |
| |
| public void testDecode_allow4Bit() { |
| assertArraysEqual(new byte[]{6}, decode("6".toCharArray(), true)); |
| assertArraysEqual(new byte[]{6, 0x76}, decode("676".toCharArray(), true)); |
| } |
| |
| public void testDecode_disallow4Bit() { |
| try { |
| decode("676".toCharArray(), false /* allowSingleChar */); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testDecode_invalid() { |
| try { |
| decode("DEADBARD".toCharArray(), false /* allowSingleChar */); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| |
| // This demonstrates a difference in behaviour from apache commons : apache |
| // commons uses Character.isDigit and would successfully decode a string with |
| // arabic and devanagari characters. |
| try { |
| decode("६१٧٥٥F6361646F73".toCharArray(), false /* allowSingleChar */); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| |
| try { |
| decode("#%6361646F73".toCharArray(), false /* allowSingleChar */); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| private static void assertArraysEqual(char[] lhs, char[] rhs) { |
| assertEquals(new String(lhs), new String(rhs)); |
| } |
| |
| private static void assertArraysEqual(byte[] lhs, byte[] rhs) { |
| assertEquals(Arrays.toString(lhs), Arrays.toString(rhs)); |
| } |
| |
| private static String lower(String string) { |
| return string.toLowerCase(Locale.ROOT); |
| } |
| |
| private static String upper(String string) { |
| return string.toUpperCase(Locale.ROOT); |
| } |
| } |