1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.net; 18 19 import android.os.Parcel; 20 import android.test.suitebuilder.annotation.SmallTest; 21 22 import junit.framework.TestCase; 23 24 import static org.junit.Assert.assertArrayEquals; 25 26 public class UidRangeTest extends TestCase { 27 28 static { 29 System.loadLibrary("frameworksnettestsjni"); 30 } 31 readAndWriteNative(byte[] inParcel)32 private static native byte[] readAndWriteNative(byte[] inParcel); getStart(byte[] inParcel)33 private static native int getStart(byte[] inParcel); getStop(byte[] inParcel)34 private static native int getStop(byte[] inParcel); 35 36 @SmallTest testNativeParcelUnparcel()37 public void testNativeParcelUnparcel() { 38 UidRange original = new UidRange(1234, Integer.MAX_VALUE); 39 40 byte[] inParcel = marshall(original); 41 byte[] outParcel = readAndWriteNative(inParcel); 42 UidRange roundTrip = unmarshall(outParcel); 43 44 assertEquals(original, roundTrip); 45 assertArrayEquals(inParcel, outParcel); 46 } 47 48 @SmallTest testIndividualNativeFields()49 public void testIndividualNativeFields() { 50 UidRange original = new UidRange(0x11115678, 0x22224321); 51 byte[] originalBytes = marshall(original); 52 53 assertEquals(original.start, getStart(originalBytes)); 54 assertEquals(original.stop, getStop(originalBytes)); 55 } 56 57 @SmallTest testSingleItemUidRangeAllowed()58 public void testSingleItemUidRangeAllowed() { 59 new UidRange(123, 123); 60 new UidRange(0, 0); 61 new UidRange(Integer.MAX_VALUE, Integer.MAX_VALUE); 62 } 63 64 @SmallTest testNegativeUidsDisallowed()65 public void testNegativeUidsDisallowed() { 66 try { 67 new UidRange(-2, 100); 68 fail("Exception not thrown for negative start UID"); 69 } catch (IllegalArgumentException expected) { 70 } 71 72 try { 73 new UidRange(-200, -100); 74 fail("Exception not thrown for negative stop UID"); 75 } catch (IllegalArgumentException expected) { 76 } 77 } 78 79 @SmallTest testStopLessThanStartDisallowed()80 public void testStopLessThanStartDisallowed() { 81 final int x = 4195000; 82 try { 83 new UidRange(x, x - 1); 84 fail("Exception not thrown for negative-length UID range"); 85 } catch (IllegalArgumentException expected) { 86 } 87 } 88 89 /** 90 * Write a {@link UidRange} into an empty parcel and return the underlying data. 91 * 92 * @see unmarshall(byte[]) 93 */ marshall(UidRange range)94 private static byte[] marshall(UidRange range) { 95 Parcel p = Parcel.obtain(); 96 range.writeToParcel(p, /* flags */ 0); 97 p.setDataPosition(0); 98 return p.marshall(); 99 } 100 101 /** 102 * Read raw bytes into a parcel, and read a {@link UidRange} back out of them. 103 * 104 * @see marshall(UidRange) 105 */ unmarshall(byte[] data)106 private static UidRange unmarshall(byte[] data) { 107 Parcel p = Parcel.obtain(); 108 p.unmarshall(data, 0, data.length); 109 p.setDataPosition(0); 110 return UidRange.CREATOR.createFromParcel(p); 111 } 112 } 113