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DiscImageChef.Tests/Checksums/CRC32.cs

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+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : CRC16.cs
+// Version        : 1.0
+// Author(s)      : Natalia Portillo
+//
+// Component      : Component
+//
+// Revision       : $Revision$
+// Last change by : $Author$
+// Date           : $Date$
+//
+// --[ Description ] ----------------------------------------------------------
+//
+// Description
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright (C) 2011-2015 Claunia.com
+// ****************************************************************************/
+// //$Id$
+using System;
+using NUnit.Framework;
+using DiscImageChef.Checksums;
+using System.IO;
+
+namespace DiscImageChef.Tests.Checksums
+{
+    [TestFixture]
+    public class CRC16
+    {
+        static readonly byte[] ExpectedEmpty = { 0x00, 0x00 };
+        static readonly byte[] ExpectedRandom = { 0x2d, 0x6d };
+
+        [Test]
+        public void CRC16EmptyFile()
+        {
+            byte[] result = CRC16Context.File(Path.Combine(Consts.TestFilesRoot, "checksums", "empty"));
+            Assert.AreEqual(ExpectedEmpty, result);
+        }
+
+        [Test]
+        public void CRC16EmptyData()
+        {
+            byte[] data = new byte[1048576];
+            FileStream fs = new FileStream(Path.Combine(Consts.TestFilesRoot, "checksums", "empty"), FileMode.Open, FileAccess.Read);
+            fs.Read(data, 0, 1048576);
+            fs.Close();
+            fs.Dispose();
+            CRC16Context.Data(data, out byte[] result);
+            Assert.AreEqual(ExpectedEmpty, result);
+        }
+
+        [Test]
+        public void CRC16EmptyInstance()
+        {
+            byte[] data = new byte[1048576];
+            FileStream fs = new FileStream(Path.Combine(Consts.TestFilesRoot, "checksums", "empty"), FileMode.Open, FileAccess.Read);
+            fs.Read(data, 0, 1048576);
+            fs.Close();
+            fs.Dispose();
+            CRC16Context ctx = new CRC16Context();
+            ctx.Init();
+            ctx.Update(data);
+            byte[] result = ctx.Final();
+            Assert.AreEqual(ExpectedEmpty, result);
+        }
+
+        [Test]
+        public void CRC16RandomFile()
+        {
+            byte[] result = CRC16Context.File(Path.Combine(Consts.TestFilesRoot, "checksums", "random"));
+            Assert.AreEqual(ExpectedRandom, result);
+        }
+
+        [Test]
+        public void CRC16RandomData()
+        {
+            byte[] data = new byte[1048576];
+            FileStream fs = new FileStream(Path.Combine(Consts.TestFilesRoot, "checksums", "random"), FileMode.Open, FileAccess.Read);
+            fs.Read(data, 0, 1048576);
+            fs.Close();
+            fs.Dispose();
+            CRC16Context.Data(data, out byte[] result);
+            Assert.AreEqual(ExpectedRandom, result);
+        }
+
+        [Test]
+        public void CRC16RandomInstance()
+        {
+            byte[] data = new byte[1048576];
+            FileStream fs = new FileStream(Path.Combine(Consts.TestFilesRoot, "checksums", "random"), FileMode.Open, FileAccess.Read);
+            fs.Read(data, 0, 1048576);
+            fs.Close();
+            fs.Dispose();
+            CRC16Context ctx = new CRC16Context();
+            ctx.Init();
+            ctx.Update(data);
+            byte[] result = ctx.Final();
+            Assert.AreEqual(ExpectedRandom, result);
+        }
+    }
+}