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
17package com.android.dex;
18
19import com.android.dex.util.ByteArrayByteInput;
20import junit.framework.TestCase;
21
22public 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