FileDescriptorTest.java revision cc05ad238516f1303687aba4a978e24e57c0c07a 
1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package tests.api.java.io;
19
20import java.io.BufferedOutputStream;
21import java.io.File;
22import java.io.FileDescriptor;
23import java.io.FileInputStream;
24import java.io.FileOutputStream;
25import java.io.RandomAccessFile;
26
27import dalvik.annotation.TestLevel;
28import dalvik.annotation.TestTargetClass;
29import dalvik.annotation.TestTargetNew;
30
31@TestTargetClass(FileDescriptor.class)
32public class FileDescriptorTest extends junit.framework.TestCase {
33
34    private static String platformId = "JDK"
35            + System.getProperty("java.vm.version").replace('.', '-');
36
37    FileOutputStream fos;
38
39    BufferedOutputStream os;
40
41    FileInputStream fis;
42
43    File f;
44
45    /**
46     * @tests java.io.FileDescriptor#FileDescriptor()
47     */
48    @TestTargetNew(
49        level = TestLevel.COMPLETE,
50        method = "FileDescriptor",
51        args = {}
52    )
53    public void test_Constructor() {
54        // Test for method java.io.FileDescriptor()
55        FileDescriptor fd = new FileDescriptor();
56        assertTrue("Failed to create FileDescriptor",
57                fd instanceof FileDescriptor);
58    }
59
60    /**
61     * @tests java.io.FileDescriptor#sync()
62     */
63    @TestTargetNew(
64        level = TestLevel.SUFFICIENT,
65        notes = "SyncFailedException not checked since it is only thrown" +
66                "by the native implementation of sync().",
67        method = "sync",
68        args = {}
69    )
70       public void test_sync() throws Exception {
71        // Test for method void java.io.FileDescriptor.sync()
72        f = File.createTempFile("fd" + platformId, ".tst");
73        f.delete();
74        fos = new FileOutputStream(f.getPath());
75        fos.write("Test String".getBytes());
76        fis = new FileInputStream(f.getPath());
77        FileDescriptor fd = fos.getFD();
78        fd.sync();
79        int length = "Test String".length();
80        assertEquals("Bytes were not written after sync", length, fis
81                .available());
82
83        // Regression test for Harmony-1494
84        fd = fis.getFD();
85        fd.sync();
86        assertEquals("Bytes were not written after sync", length, fis
87                .available());
88
89        RandomAccessFile raf = new RandomAccessFile(f, "r");
90        fd = raf.getFD();
91        fd.sync();
92        raf.close();
93    }
94
95    /**
96     * @tests java.io.FileDescriptor#valid()
97     */
98    @TestTargetNew(
99        level = TestLevel.COMPLETE,
100        method = "valid",
101        args = {}
102    )
103    public void test_valid() {
104        // Test for method boolean java.io.FileDescriptor.valid()
105        try {
106            f = new File(System.getProperty("java.io.tmpdir"), "fd.tst");
107            f.delete();
108            os = new BufferedOutputStream(fos = new FileOutputStream(f
109                    .getPath()), 4096);
110            FileDescriptor fd = fos.getFD();
111            assertTrue("Valid fd returned false", fd.valid());
112            os.close();
113            assertTrue("Invalid fd returned true", !fd.valid());
114        } catch (Exception e) {
115            fail("Exception during test : " + e.getMessage());
116        }
117
118    }
119
120    /**
121     * Sets up the fixture, for example, open a network connection. This method
122     * is called before a test is executed.
123     */
124    protected void setUp() {
125    }
126
127    /**
128     * Tears down the fixture, for example, close a network connection. This
129     * method is called after a test is executed.
130     */
131    protected void tearDown() {
132        try {
133            os.close();
134        } catch (Exception e) {
135        }
136        try {
137            fis.close();
138        } catch (Exception e) {
139        }
140        try {
141            fos.close();
142        } catch (Exception e) {
143        }
144        try {
145            f.delete();
146        } catch (Exception e) {
147        }
148    }
149
150    protected void doneSuite() {
151    }
152}
153