The Android Open Source Project | b5de22c | 2012-04-01 00:00:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 libcore.java.util.zip; |
| 18 | |
| 19 | import java.io.ByteArrayInputStream; |
| 20 | import java.io.ByteArrayOutputStream; |
| 21 | import java.io.IOException; |
| 22 | import java.io.InputStream; |
| 23 | import java.util.Arrays; |
| 24 | import java.util.zip.DeflaterInputStream; |
| 25 | import java.util.zip.InflaterInputStream; |
| 26 | import junit.framework.TestCase; |
| 27 | |
| 28 | public final class DeflaterInputStreamTest extends TestCase { |
| 29 | |
| 30 | public void testReadByteByByte() throws IOException { |
| 31 | byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; |
| 32 | InputStream in = new DeflaterInputStream(new ByteArrayInputStream(data)); |
| 33 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| 34 | |
| 35 | assertEquals(1, in.available()); |
| 36 | int b; |
| 37 | while ((b = in.read()) != -1) { |
| 38 | out.write(b); |
| 39 | } |
| 40 | assertEquals(0, in.available()); |
| 41 | |
| 42 | assertEquals(Arrays.toString(data), Arrays.toString(inflate(out.toByteArray()))); |
| 43 | |
| 44 | in.close(); |
| 45 | try { |
| 46 | in.available(); |
| 47 | fail(); |
| 48 | } catch (IOException expected) { |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | public byte[] inflate(byte[] bytes) throws IOException { |
| 53 | java.io.InputStream in = new InflaterInputStream(new ByteArrayInputStream(bytes)); |
| 54 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| 55 | byte[] buffer = new byte[1024]; |
| 56 | int count; |
| 57 | while ((count = in.read(buffer)) != -1) { |
| 58 | out.write(buffer, 0, count); |
| 59 | } |
| 60 | return out.toByteArray(); |
| 61 | } |
| 62 | |
| 63 | public void testReadWithBuffer() throws IOException { |
| 64 | byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; |
| 65 | byte[] buffer = new byte[8]; |
| 66 | InputStream in = new DeflaterInputStream(new ByteArrayInputStream(data)); |
| 67 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| 68 | assertEquals(1, in.available()); |
| 69 | int count; |
| 70 | while ((count = in.read(buffer, 0, 5)) != -1) { |
| 71 | assertTrue(count <= 5); |
| 72 | out.write(buffer, 0, count); |
| 73 | } |
| 74 | assertEquals(0, in.available()); |
| 75 | |
| 76 | assertEquals(Arrays.toString(data), Arrays.toString(inflate(out.toByteArray()))); |
| 77 | |
| 78 | in.close(); |
| 79 | try { |
| 80 | in.available(); |
| 81 | fail(); |
| 82 | } catch (IOException expected) { |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | public void testReadExceptions() throws IOException { |
| 87 | byte[] data = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; |
| 88 | byte[] buffer = new byte[8]; |
| 89 | InputStream in = new DeflaterInputStream(new ByteArrayInputStream(data)); |
| 90 | try { |
| 91 | in.read(buffer, 0, 10); |
| 92 | fail(); |
| 93 | } catch (IndexOutOfBoundsException expected) { |
| 94 | } |
| 95 | try { |
| 96 | in.read(null, 0, 5); |
| 97 | fail(); |
| 98 | } catch (NullPointerException expected) { |
| 99 | } |
| 100 | try { |
| 101 | in.read(buffer, -1, 5); |
| 102 | fail(); |
| 103 | } catch (IndexOutOfBoundsException expected) { |
| 104 | } |
| 105 | in.close(); |
| 106 | try { |
| 107 | in.read(buffer, 0, 5); |
| 108 | fail(); |
| 109 | } catch (IOException expected) { |
| 110 | } |
| 111 | } |
| 112 | } |