Add unti test files - UnitTestData from http://office.datagis.com/pub…

…/FreeImage/FreeImage.NET/packages/FreeImage.NET-3.13.1-1-src.zip found from https://sourceforge.net/p/freeimage/discussion/36110/thread/17994e1f/

Wrapper/FreeImage.NET/cs/UnitTestData/MarshallerBug/Bug.cs

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+// This sample code shows a bug in the .NET marshaller.
+// Native C++ functions returning a string (char*) sometimes
+// are not marshalled correctly throwing an exception.
+// This is the reason why the .NET wrapper converts
+// the char-pointer manually into a .NET string.
+
+using System;
+using System.Text;
+using System.Runtime.InteropServices;
+
+public static class FreeImage
+{
+	private const string dllName = "FreeImage.dll";
+
+	[DllImport(dllName, EntryPoint = "FreeImage_GetFormatFromFIF")]
+	[return: MarshalAs(UnmanagedType.LPStr)]
+	public static extern string GetFormatFromFIF(int format);
+
+	[DllImport(dllName, EntryPoint = "FreeImage_GetFIFExtensionList")]
+	[return: MarshalAs(UnmanagedType.LPStr)]
+	public static extern string GetFIFExtensionList(int format);
+
+	[DllImport(dllName, EntryPoint = "FreeImage_GetFIFDescription")]
+	[return: MarshalAs(UnmanagedType.LPStr)]
+	public static extern string GetFIFDescription(int format);
+
+	[DllImport(dllName, EntryPoint = "FreeImage_GetFIFRegExpr")]
+	[return: MarshalAs(UnmanagedType.LPStr)]
+	public static extern string GetFIFRegExpr(int format);
+
+	[DllImport(dllName, EntryPoint = "FreeImage_GetFIFMimeType")]
+	[return: MarshalAs(UnmanagedType.LPStr)]
+	public static extern string GetFIFMimeType(int format);
+
+	[DllImport(dllName, EntryPoint = "FreeImage_GetFIFCount")]
+	public static extern int GetFIFCount();
+}
+
+public class Program
+{
+	public static bool[,] getmatrix(int fifCount)
+	{
+		bool[,] matrix = new bool[5, fifCount];
+
+		int j = 0;
+
+		for (int i = 0; i < fifCount; i++)
+		{
+			bool success = true;
+			try
+			{
+				FreeImage.GetFormatFromFIF(i);
+			}
+			catch
+			{
+				success = false;
+			}
+			matrix[j, i] = success;
+		}
+		j++;
+
+		for (int i = 0; i < fifCount; i++)
+		{
+			bool success = true;
+			try
+			{
+				FreeImage.GetFIFExtensionList(i);
+			}
+			catch
+			{
+				success = false;
+			}
+			matrix[j, i] = success;
+		}
+		j++;
+
+		for (int i = 0; i < fifCount; i++)
+		{
+			bool success = true;
+			try
+			{
+				FreeImage.GetFIFDescription(i);
+			}
+			catch
+			{
+				success = false;
+			}
+			matrix[j, i] = success;
+		}
+		j++;
+
+		for (int i = 0; i < fifCount; i++)
+		{
+			bool success = true;
+			try
+			{
+				FreeImage.GetFIFRegExpr(i);
+			}
+			catch
+			{
+				success = false;
+			}
+			matrix[j, i] = success;
+		}
+		j++;
+
+		for (int i = 0; i < fifCount; i++)
+		{
+			bool success = true;
+			try
+			{
+				FreeImage.GetFIFMimeType(i);
+			}
+			catch
+			{
+				success = false;
+			}
+			matrix[j, i] = success;
+		}
+
+		return matrix;
+	}
+
+	public static void Main()
+	{
+		int fifCount = FreeImage.GetFIFCount();
+		bool[,] matrix = getmatrix(fifCount);
+
+		Console.Clear();
+		Console.WriteLine("1: GetFormatFromFIF");
+		Console.WriteLine("2: GetFIFExtensionList");
+		Console.WriteLine("3: GetFIFDescription");
+		Console.WriteLine("4: GetFIFRegExpr");
+		Console.WriteLine("5: GetFIFMimeType");
+		Console.Write(Environment.NewLine);
+
+		Console.Write("FIF:\t");
+		for (int x = 1; x < 6; x++)
+			Console.Write("{0}:\t", x);
+
+		Console.Write(Environment.NewLine);
+
+		for (int k = 0; k < fifCount; k++)
+		{
+			Console.Write("{0}:\t", k);
+			for (int l = 0; l < 5; l++)
+			{
+				Console.Write(matrix[l, k] ? "1\t" : "0\t");
+			}
+			Console.Write(Environment.NewLine);
+		}
+	}
+}

Wrapper/FreeImage.NET/cs/UnitTestData/NUnit.txt

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+NUnit 2.x is needed for FreeImage .NET wrapper unit tests. It can be
+downloaded from http://www.nunit.org/
+
+After installing NUnit, double click on the NUnit project file
+FreeImage.NET.nunit located in the FreeImage .NET wrapper Source folder
+to load the project.
+
+The FreeImage .NET wrapper unit test project UnitTest.csproj, located
+under Source\UnitTest, must be compiled in 'Debug' mode prior to opening
+the NUnit project.
+
+The FreeImage .NET wrapper unit test project UnitTest.csproj currently
+relies on the FreeImage .NET wrapper single source file, created by the
+Source File Merger, located in the Source\SourceFileMerger folder.