2 // MemoryMappedFileTest.cs
5 // Zoltan Varga (vargaz@gmail.com)
7 // (C) 2009 Novell, Inc. (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.IO.MemoryMappedFiles;
36 using NUnit.Framework;
38 namespace MonoTests.System.IO.MemoryMappedFiles {
41 public class MemoryMappedFileTest {
43 void AssertThrows<ExType> (Action del) where ExType : Exception {
51 Assert.IsTrue (thrown);
54 static string tempDir = Path.Combine (Path.GetTempPath (), typeof (MemoryMappedFileTest).FullName);
59 protected void SetUp () {
60 if (Directory.Exists (tempDir))
61 Directory.Delete (tempDir, true);
63 Directory.CreateDirectory (tempDir);
65 fname = Path.Combine (tempDir, "basic.txt");
67 using (StreamWriter sw = new StreamWriter (fname)) {
68 sw.WriteLine ("Hello!");
69 sw.WriteLine ("World!");
74 protected void TearDown () {
75 if (Directory.Exists (tempDir))
76 Directory.Delete (tempDir, true);
80 public void Basic () {
81 var file = MemoryMappedFile.CreateFromFile (fname, FileMode.Open);
83 using (var stream = file.CreateViewStream ()) {
84 TextReader r = new StreamReader (stream);
89 Assert.AreEqual ("Hello!", s);
91 Assert.AreEqual ("World!", s);
96 public void CreateFromFile_Null () {
97 AssertThrows<ArgumentNullException> (delegate () {
98 MemoryMappedFile.CreateFromFile (null);
103 public void CreateViewStream_Offsets () {
104 var file = MemoryMappedFile.CreateFromFile (fname, FileMode.Open);
106 using (var stream = file.CreateViewStream (2, 3)) {
107 byte[] arr = new byte [128];
109 int len = stream.Read (arr, 0, 128);
111 Assert.AreEqual (3, len);
113 Assert.AreEqual ('l', (char)arr [0]);
114 Assert.AreEqual ('l', (char)arr [1]);
115 Assert.AreEqual ('o', (char)arr [2]);
120 public void CreateViewStream_Rights () {
121 var file = MemoryMappedFile.CreateFromFile (fname, FileMode.Open);
123 using (var stream = file.CreateViewStream (0, 0, MemoryMappedFileAccess.Read)) {
124 AssertThrows<NotSupportedException> (delegate () {
125 stream.WriteByte (0);
129 using (var stream = file.CreateViewStream (0, 0, MemoryMappedFileAccess.Write)) {
130 AssertThrows<NotSupportedException> (delegate () {
137 public unsafe void CreateViewBasic () {
138 var file = MemoryMappedFile.CreateFromFile (fname, FileMode.Open);
140 using (var v = file.CreateViewAccessor ()) {
144 var handle = v.SafeMemoryMappedViewHandle;
148 handle.AcquirePointer (ref b);
150 for (int i = 0; i < 5; ++i)
153 handle.ReleasePointer ();
156 Assert.AreEqual ("Hello", s);
161 public unsafe void ViewReadArray () {
162 var file = MemoryMappedFile.CreateFromFile (fname, FileMode.Open);
164 using (var v = file.CreateViewAccessor ()) {
165 var a = new byte [5];
166 var n = v.ReadArray (0, a, 0, 5);
167 Assert.AreEqual (5, n);
168 var s = new string (Array.ConvertAll (a, b => (char)b));
169 Assert.AreEqual ("Hello", s);