2 * Copyright (C) 2011 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.dx.io;
19 import com.android.dx.util.ByteArrayByteInput;
20 import junit.framework.TestCase;
22 public final class EncodedValueReaderTest extends TestCase {
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());
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());
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());
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());
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());
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());
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());
96 public void testReadBoolean() {
97 assertEquals(true, readerOf(63).readBoolean());
98 assertEquals(false, readerOf(31).readBoolean());
101 public void testReadNull() {
102 readerOf(30).readNull();
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());
112 public void testReadWrongType() {
114 readerOf(0x17, 0xab).readField();
116 } catch (IllegalStateException expected) {
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];
125 return new EncodedValueReader(new ByteArrayByteInput(data));