CD parity information database test

CUETools/CUETools.TestParity/CDRepairEncodeTest.cs

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+using System;
+using CUETools.CDRepair;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using CUETools.Codecs;
+
+namespace CUETools.TestParity
+{
+    
+    
+    /// <summary>
+    ///This is a test class for CDRepairEncodeTest and is intended
+    ///to contain all CDRepairEncodeTest Unit Tests
+    ///</summary>
+	[TestClass()]
+	public class CDRepairEncodeTest
+	{
+
+		const int finalSampleCount = 44100 * 60 * 10; // 10 minutes long
+		//const int stride = finalSampleCount * 2 / 32768;
+		const int stride = 10 * 588 * 2;
+		// CD has maximum of 360.000 sectors; 
+		// If stride equals 10 sectors (10 sectors * 588 samples * 2 words),
+		// then maximum sequence length is 36.000 sectors.
+		// 36.000 is less than (65535 - npar), so we're ok here.
+		// npar == 8 provides error correction for 4 samples out of every 36k,
+		// i.e. at best one sample per 9k can be repaired.
+		// Parity data per one CD requires 10 * 588 * 4 * npar bytes,
+		// which equals 188.160b == 184kb
+		// We might consider shorter strides to reduce parity data size,
+		// but it probably should still be a multiple of 588 * 2;
+		// (or the size of CD CIRC buffer?)
+
+		const int npar = 8;
+		static byte[] wav = new byte[finalSampleCount * 4];
+
+		private TestContext testContextInstance;
+
+		/// <summary>
+		///Gets or sets the test context which provides
+		///information about and functionality for the current test run.
+		///</summary>
+		public TestContext TestContext
+		{
+			get
+			{
+				return testContextInstance;
+			}
+			set
+			{
+				testContextInstance = value;
+			}
+		}
+
+		#region Additional test attributes
+		// 
+		//You can use the following additional attributes as you write your tests:
+		//
+		//Use ClassInitialize to run code before running the first test in the class
+		[ClassInitialize()]
+		public static void MyClassInitialize(TestContext testContext)
+		{
+			new Random(2423).NextBytes(wav);
+		}
+
+		//Use ClassCleanup to run code after all tests in a class have run
+		//[ClassCleanup()]
+		//public static void MyClassCleanup()
+		//{
+		//}
+		//
+		//Use TestInitialize to run code before running each test
+		//[TestInitialize()]
+		//public void MyTestInitialize()
+		//{
+		//}
+		//
+		//Use TestCleanup to run code after each test has run
+		//[TestCleanup()]
+		//public void MyTestCleanup()
+		//{
+		//}
+		//
+		#endregion
+
+
+		/// <summary>
+		///A test for Write
+		///</summary>
+		[TestMethod()]
+		public void CDRepairEncodeWriteTest()
+		{
+			AudioBuffer buff = new AudioBuffer(AudioPCMConfig.RedBook, 0);
+			CDRepairEncode encode = new CDRepairEncode(finalSampleCount, stride, npar, false);
+			buff.Prepare(wav, finalSampleCount);
+			encode.Write(buff);
+			encode.Close();
+			Assert.AreEqual<byte>(8, encode.Parity[0]);
+			Assert.AreEqual<uint>(2278257733, encode.CRC);
+		}
+	}
+}