#349: FastFeatureDetector does not work

src/OpenCvSharp/modules/features2d/FastFeatureDetector.cs

@@ -23,9 +23,9 @@ public class FastFeatureDetector : Feature2D
         /// <summary>
         /// 
         /// </summary>
-        protected FastFeatureDetector(IntPtr ptr)
+        protected FastFeatureDetector(IntPtr p)
         {
-            ptrObj = new Ptr(ptr);
+            ptrObj = new Ptr(p);
             ptr = ptrObj.Get();
         }
 

test/OpenCvSharp.Tests/features2d/FastFeatureDetectorTest.cs

@@ -0,0 +1,29 @@
+using System;
+using NUnit.Framework;
+
+namespace OpenCvSharp.Tests.Features2D
+{
+    // ReSharper disable once InconsistentNaming
+
+    [TestFixture]
+    public class FastFeatureDetectorTest : TestBase
+    {
+        [Test]
+        public void CreateAndDispose()
+        {
+            var surf = FastFeatureDetector.Create();
+            surf.Dispose();
+        }
+
+        [Test]
+        public void Detect()
+        {
+            KeyPoint[] keyPoints;
+            using (var gray = Image("lenna.png", 0))
+            using (var orb = FastFeatureDetector.Create())
+                keyPoints = orb.Detect(gray);
+
+            Console.WriteLine($"KeyPoint has {keyPoints.Length} items.");
+        }
+    }
+}