1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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22  */
23 
24 /**
25  * @test
26  * @bug 4679743 8148624
27  * @summary Test parts of DeflaterInputStream code that don't really do I/O.
28  */
29 
30 import java.io.*;
31 import java.util.zip.*;
32 
33 public class ConstructDeflaterInput {
34 
35     static class MyDeflater extends Deflater {
36         volatile boolean ended = false;
end()37         public void end() {
38             ended = true;
39             super.end();
40         }
41     }
42 
realMain(String[] args)43     public static void realMain(String[] args) throws Throwable {
44         final MyDeflater def = new MyDeflater();
45         ByteArrayInputStream bais = new ByteArrayInputStream(
46             "hello, world".getBytes());
47         DeflaterInputStream dis = null;
48         byte[] b = new byte[512];
49 
50         // Check construction
51         //
52         try {
53             dis = new DeflaterInputStream(null);
54             fail();
55         } catch (NullPointerException ex) {
56             pass();
57         }
58 
59         try {
60             dis = new DeflaterInputStream(bais, null);
61             fail();
62         } catch (NullPointerException ex) {
63             pass();
64         }
65 
66         try {
67             dis = new DeflaterInputStream(bais, def, 0);
68             fail();
69         } catch (IllegalArgumentException ex) {
70             pass();
71         }
72 
73         // Check sanity checks in read methods
74         //
75         dis = new DeflaterInputStream(bais, def);
76 
77         try {
78             dis.read(null, 5, 2);
79             fail();
80         } catch (NullPointerException ex) {
81             pass();
82         }
83 
84         try {
85             dis.read(b, -1, 0);
86             fail();
87         } catch (IndexOutOfBoundsException ex) {
88             pass();
89         }
90 
91         try {
92             dis.read(b, 0, -1);
93             fail();
94         } catch (IndexOutOfBoundsException ex) {
95             pass();
96         }
97 
98         try {
99             dis.read(b, 0, 600);
100             fail();
101         } catch (IndexOutOfBoundsException ex) {
102             pass();
103         }
104 
105         int len = 0;
106         try {
107             len = dis.read(b, 0, 0);
108             check(len == 0);
109         } catch (IndexOutOfBoundsException ex) {
110             fail("Read of length 0 should return 0, but returned " + len);
111         }
112 
113         try {
114             dis.skip(-1);
115             fail();
116         } catch (IllegalArgumentException ex) {
117             pass();
118         }
119 
120         // Check unsupported operations
121         //
122         check(!dis.markSupported());
123         check(dis.available() == 1);
124         check(!def.ended);
125         try {
126             dis.reset();
127             fail();
128         } catch (IOException ex) {
129             pass();
130         }
131 
132         // Check close
133         //
134         dis.close();
135         check(!def.ended);
136 
137         try {
138             dis.available();
139             fail();
140         } catch (IOException ex) {
141             pass();
142         }
143 
144         try {
145             int x = dis.read();
146             fail();
147         } catch (IOException ex) {
148             pass();
149         }
150 
151         try {
152             dis.skip(1);
153             fail();
154         } catch (IOException ex) {
155             pass();
156         }
157         java.lang.ref.Reference.reachabilityFence(def);
158     }
159 
160     //--------------------- Infrastructure ---------------------------
161     static volatile int passed = 0, failed = 0;
pass()162     static void pass() {passed++;}
fail()163     static void fail() {failed++; Thread.dumpStack();}
fail(String msg)164     static void fail(String msg) {System.out.println(msg); fail();}
unexpected(Throwable t)165     static void unexpected(Throwable t) {failed++; t.printStackTrace();}
check(boolean cond)166     static void check(boolean cond) {if (cond) pass(); else fail();}
equal(Object x, Object y)167     static void equal(Object x, Object y) {
168         if (x == null ? y == null : x.equals(y)) pass();
169         else fail(x + " not equal to " + y);}
main(String[] args)170     public static void main(String[] args) throws Throwable {
171         try {realMain(args);} catch (Throwable t) {unexpected(t);}
172         System.out.println("\nPassed = " + passed + " failed = " + failed);
173         if (failed > 0) throw new AssertionError("Some tests failed");}
174 }
175