1 /* 2 * Copyright (C) 2011 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 com.android.dex; 18 19 import com.android.dex.util.ByteArrayByteInput; 20 import junit.framework.TestCase; 21 22 public final class EncodedValueReaderTest extends TestCase { 23 24 public void testReadByte() { 25 assertEquals((byte) 0x80, readerOf(0, 0x80).readByte()); 26 assertEquals((byte) 0xff, readerOf(0, 0xff).readByte()); 27 assertEquals((byte) 0x00, readerOf(0, 0x00).readByte()); 28 assertEquals((byte) 0x01, readerOf(0, 0x01).readByte()); 29 assertEquals((byte) 0x7f, readerOf(0, 0x7f).readByte()); 30 } 31 32 public void testReadShort() { 33 assertEquals((short) 0x8000, readerOf(34, 0x00, 0x80).readShort()); 34 assertEquals((short) 0, readerOf( 2, 0x00).readShort()); 35 assertEquals((short) 0xab, readerOf(34, 0xab, 0x00).readShort()); 36 assertEquals((short) 0xabcd, readerOf(34, 0xcd, 0xab).readShort()); 37 assertEquals((short) 0x7FFF, readerOf(34, 0xff, 0x7f).readShort()); 38 } 39 40 public void testReadInt() { 41 assertEquals(0x80000000, readerOf(100, 0x00, 0x00, 0x00, 0x80).readInt()); 42 assertEquals( 0x00, readerOf( 4, 0x00).readInt()); 43 assertEquals( 0xab, readerOf( 36, 0xab, 0x00).readInt()); 44 assertEquals( 0xabcd, readerOf( 68, 0xcd, 0xab, 0x00).readInt()); 45 assertEquals( 0xabcdef, readerOf(100, 0xef, 0xcd, 0xab, 0x00).readInt()); 46 assertEquals(0xabcdef01, readerOf(100, 0x01, 0xef, 0xcd, 0xab).readInt()); 47 assertEquals(0x7fffffff, readerOf(100, 0xff, 0xff, 0xff, 127).readInt()); 48 } 49 50 public void testReadLong() { 51 assertEquals(0x8000000000000000L, readerOf( -26, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80).readLong()); 52 assertEquals( 0x00L, readerOf( 6, 0x00).readLong()); 53 assertEquals( 0xabL, readerOf( 38, 0xab, 0x00).readLong()); 54 assertEquals( 0xabcdL, readerOf( 70, 0xcd, 0xab, 0x00).readLong()); 55 assertEquals( 0xabcdefL, readerOf( 102, 0xef, 0xcd, 0xab, 0x00).readLong()); 56 assertEquals( 0xabcdef01L, readerOf(-122, 0x01, 0xef, 0xcd, 0xab, 0x00).readLong()); 57 assertEquals( 0xabcdef0123L, readerOf( -90, 0x23, 0x01, 0xef, 0xcd, 0xab, 0x00).readLong()); 58 assertEquals( 0xabcdef012345L, readerOf( -58, 0x45, 0x23, 0x01, 0xef, 0xcd, 0xab, 0x00).readLong()); 59 assertEquals( 0xabcdef01234567L, readerOf( -26, 0x67, 0x45, 0x23, 0x01, 0xef, 0xcd, 0xab, 0x00).readLong()); 60 assertEquals(0xabcdef0123456789L, readerOf( -26, 0x89, 0x67, 0x45, 0x23, 0x01, 0xef, 0xcd, 0xab).readLong()); 61 assertEquals(0x7fffffffffffffffL, readerOf( -26, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f).readLong()); 62 } 63 64 public void testReadFloat() { 65 assertEquals(Float.NEGATIVE_INFINITY, readerOf(48, -128, -1).readFloat()); 66 assertEquals(Float.POSITIVE_INFINITY, readerOf(48, -128, 127).readFloat()); 67 assertEquals(Float.NaN, readerOf(48, -64, 127).readFloat()); 68 assertEquals(-0.0f, readerOf(16, -128).readFloat()); 69 assertEquals(0.0f, readerOf(16, 0).readFloat()); 70 assertEquals(0.5f, readerOf(16, 63).readFloat()); 71 assertEquals(1f, readerOf(48, -128, 63).readFloat()); 72 assertEquals(1.0E06f, readerOf(80, 36, 116, 73).readFloat()); 73 assertEquals(1.0E12f, readerOf(112, -91, -44, 104, 83).readFloat()); 74 } 75 76 public void testReadDouble() { 77 assertEquals(Double.NEGATIVE_INFINITY, readerOf(49, -16, -1).readDouble()); 78 assertEquals(Double.POSITIVE_INFINITY, readerOf(49, -16, 127).readDouble()); 79 assertEquals(Double.NaN, readerOf(49, -8, 127).readDouble()); 80 assertEquals(-0.0, readerOf(17, -128).readDouble()); 81 assertEquals(0.0, readerOf(17, 0).readDouble()); 82 assertEquals(0.5, readerOf(49, -32, 63).readDouble()); 83 assertEquals(1.0, readerOf(49, -16, 63).readDouble()); 84 assertEquals(1.0E06, readerOf(113, -128, -124, 46, 65).readDouble()); 85 assertEquals(1.0E12, readerOf(-111, -94, -108, 26, 109, 66).readDouble()); 86 assertEquals(1.0E24, readerOf(-15, -76, -99, -39, 121, 67, 120, -22, 68).readDouble()); 87 } 88 89 public void testReadChar() { 90 assertEquals('\u0000', readerOf( 3, 0x00).readChar()); 91 assertEquals('\u00ab', readerOf( 3, 0xab).readChar()); 92 assertEquals('\uabcd', readerOf(35, 0xcd, 0xab).readChar()); 93 assertEquals('\uffff', readerOf(35, 0xff, 0xff).readChar()); 94 } 95 96 public void testReadBoolean() { 97 assertEquals(true, readerOf(63).readBoolean()); 98 assertEquals(false, readerOf(31).readBoolean()); 99 } 100 101 public void testReadNull() { 102 readerOf(30).readNull(); 103 } 104 105 public void testReadReference() { 106 assertEquals( 0xab, readerOf(0x17, 0xab).readString()); 107 assertEquals( 0xabcd, readerOf(0x37, 0xcd, 0xab).readString()); 108 assertEquals( 0xabcdef, readerOf(0x57, 0xef, 0xcd, 0xab).readString()); 109 assertEquals(0xabcdef01, readerOf(0x77, 0x01, 0xef, 0xcd, 0xab).readString()); 110 } 111 112 public void testReadWrongType() { 113 try { 114 readerOf(0x17, 0xab).readField(); 115 fail(); 116 } catch (IllegalStateException expected) { 117 } 118 } 119 120 private EncodedValueReader readerOf(int... bytes) { 121 byte[] data = new byte[bytes.length]; 122 for (int i = 0; i < bytes.length; i++) { 123 data[i] = (byte) bytes[i]; 124 } 125 return new EncodedValueReader(new ByteArrayByteInput(data)); 126 } 127 } 128
