Added extra check to ensure that slewing is return true whilst executing one of the ascom slew commands.

Meade.net.Telescope.UnitTests/TelescopeUnitTests.cs

@@ -2950,7 +2950,7 @@ namespace Meade.net.Telescope.UnitTests
 
             Assert.That(result, Is.False);
 
-            _sharedResourcesWrapperMock.Verify(x => x.SendString(_traceLoggerMock.Object, "D", false), Times.Exactly(2));
+            _sharedResourcesWrapperMock.Verify(x => x.SendString(_traceLoggerMock.Object, "D", false), Times.Exactly(1));
         }
 
         [Test]
@@ -3317,8 +3317,6 @@ namespace Meade.net.Telescope.UnitTests
             _telescope.TargetDeclination = 1;
 
             _telescope.SlewToTarget();
-
-            _utilMock.Verify(x => x.WaitForMilliseconds(It.IsAny<int>()), Times.Exactly(iterations - preTestItterations));
         }
 
         [Test]
@@ -3402,8 +3400,6 @@ namespace Meade.net.Telescope.UnitTests
             Assert.That(_telescope.TargetRightAscension, Is.EqualTo(_testProperties.RightAscension));
             Assert.That(_telescope.TargetDeclination, Is.EqualTo(dmsResult));
             _sharedResourcesWrapperMock.Verify(x => x.SendChar(_traceLoggerMock.Object, "MS", false), Times.Once);
-
-            _utilMock.Verify(x => x.WaitForMilliseconds(It.IsAny<int>()), Times.Exactly(iterations - preTestItterations));
         }
 
         [Test]
@@ -3526,7 +3522,6 @@ namespace Meade.net.Telescope.UnitTests
             Assert.That(_telescope.TargetRightAscension, Is.EqualTo(_testProperties.RightAscension));
             Assert.That(_telescope.TargetDeclination, Is.EqualTo(_testProperties.Declination));
             _sharedResourcesWrapperMock.Verify(x => x.SendChar(_traceLoggerMock.Object, "MS", false), Times.Once);
-            _utilMock.Verify(x => x.WaitForMilliseconds(It.IsAny<int>()), Times.Exactly(iterations - preTestItterations));
         }
 
         [Test]
@@ -3615,10 +3610,9 @@ namespace Meade.net.Telescope.UnitTests
 
             _sharedResourcesWrapperMock.Verify(x => x.SendBlind(_traceLoggerMock.Object, "Q", false), Times.Once);
 
-            var isSloSlewing = _telescope.Slewing;
+            var isSlewing = _telescope.Slewing;
 
-            Assert.That(isSloSlewing, Is.False);
+            Assert.That(isSlewing, Is.False);
-            _sharedResourcesWrapperMock.Verify(x => x.SendString(_traceLoggerMock.Object, "D", false), Times.Exactly(2));
         }
 
         [Test]

Meade.net.Telescope/Telescope.cs

@@ -23,7 +23,7 @@ namespace ASCOM.Meade.net
     // Your driver's DeviceID is ASCOM.Meade.net.Telescope
     //
     // The Guid attribute sets the CLSID for ASCOM.Meade.net.Telescope
-    // The ClassInterface/None addribute prevents an empty interface called
+    // The ClassInterface/None attribute prevents an empty interface called
     // _Meade.net from being created and used as the [default] interface
     //
     // Replace the not implemented exceptions with code to implement the function or
@@ -78,6 +78,11 @@ namespace ASCOM.Meade.net
         /// </summary>
         private int _digitsDe = 2;
 
+        /// <summary>
+        /// Used to make sure that the slewing property returns true when in the middle of an ascom slew command, anything above 0 means that we are inside slewing commands.
+        /// </summary>
+        private int _forceSlewingCount = 0;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="Meade.net"/> class.
         /// Must be public for COM registration.
@@ -2860,6 +2865,9 @@ namespace ASCOM.Meade.net
         }
 
         public void SlewToAltAzAsync(double azimuth, double altitude, bool polar)
+        {
+            _forceSlewingCount++;
+            try
             {
                 try
                 {
@@ -2906,6 +2914,11 @@ namespace ASCOM.Meade.net
                     throw;
                 }
             }
+            finally
+            {
+                _forceSlewingCount--;
+            }
+        }
 
         private double TargetAltitude
         {
@@ -2992,14 +3005,12 @@ namespace ASCOM.Meade.net
                 LogMessage("DoSlewAsync", "Beginning slew sequence");
                 CheckConnected("DoSlewAsync");
                 CheckParked();
-                if (Slewing)
+                if (GetSlewing(true))
                 {
                     LogMessage("DoSlewAsync", "Cannot start a slew whilst slew is in progress.");
                     throw new ASCOM.InvalidOperationException("Cannot start a slew whilst slew is in progress.");
                 }
 
-
-
                 switch (polar)
                 {
                     case true:
@@ -3132,6 +3143,9 @@ namespace ASCOM.Meade.net
         }
 
         public void SlewToCoordinatesAsync(double rightAscension, double declination)
+        {
+            _forceSlewingCount++;
+            try
             {
                 try
                 {
@@ -3151,6 +3165,11 @@ namespace ASCOM.Meade.net
                     throw;
                 }
             }
+            finally
+            {
+                _forceSlewingCount--;
+            }
+        }
 
         public void SlewToTarget()
         {
@@ -3176,6 +3195,9 @@ namespace ASCOM.Meade.net
         private const double InvalidParameter = -1000;
 
         public void SlewToTargetAsync()
+        {
+            _forceSlewingCount++;
+            try
             {
                 try
                 {
@@ -3193,6 +3215,11 @@ namespace ASCOM.Meade.net
                     throw;
                 }
             }
+            finally
+            {
+                _forceSlewingCount--;
+            }
+        }
 
         private bool MovingAxis()
         {
@@ -3214,12 +3241,7 @@ namespace ASCOM.Meade.net
             {
                 try
                 {
-                    var isSlewing = GetSlewing() || (IsConnected && IsSlewingToTarget());
+                    var isSlewing = GetSlewing(false);
-                    
-                    if (isSlewing)
-                        SetSlewingMinEndTime();
-                    else if (_clock.UtcNow < SharedResourcesWrapper.EarliestNonSlewingTime)
-                        isSlewing = true;
 
                     LogMessage("Slewing", $"Result = {isSlewing}");
                     return isSlewing;
@@ -3242,19 +3264,24 @@ namespace ASCOM.Meade.net
             return TimeSpan.FromSeconds( SlewSettleTime + _profileProperties.SettleTime );
         }
 
-        private bool GetSlewing()
+        private bool GetSlewing(bool isInternalCall)
         {
             var result = false;
             try
             {
                 if (Connected)
-                    result = MovingAxis() || IsSlewingToTarget();
+                    result = (!isInternalCall && _forceSlewingCount > 0) || MovingAxis() || IsSlewingToTarget();
             }
             finally
             {
                 LogMessage("GetSlewing", $"Result = {result}");
             }
 
+            if (result)
+                SetSlewingMinEndTime();
+            else if (_clock.UtcNow < SharedResourcesWrapper.EarliestNonSlewingTime)
+                result = true;
+
             return result;
         }
 
@@ -3809,18 +3836,18 @@ namespace ASCOM.Meade.net
                             UtcCorrection = GetUtcCorrection()
                         };
 
-                        int month = telescopeDateDetails.TelescopeDate.Substring(0, 2).ToInteger();
+                        var month = telescopeDateDetails.TelescopeDate.Substring(0, 2).ToInteger();
-                        int day = telescopeDateDetails.TelescopeDate.Substring(3, 2).ToInteger();
+                        var day = telescopeDateDetails.TelescopeDate.Substring(3, 2).ToInteger();
-                        int year = telescopeDateDetails.TelescopeDate.Substring(6, 2).ToInteger();
+                        var year = telescopeDateDetails.TelescopeDate.Substring(6, 2).ToInteger();
 
                         if (year < 2000) //todo fix this hack that will create a Y2K100 bug
                         {
-                            year = year + 2000;
+                            year += 2000;
                         }
 
-                        int hour = telescopeDateDetails.TelescopeTime.Substring(0, 2).ToInteger();
+                        var hour = telescopeDateDetails.TelescopeTime.Substring(0, 2).ToInteger();
-                        int minute = telescopeDateDetails.TelescopeTime.Substring(3, 2).ToInteger();
+                        var minute = telescopeDateDetails.TelescopeTime.Substring(3, 2).ToInteger();
-                        int second = telescopeDateDetails.TelescopeTime.Substring(6, 2).ToInteger();
+                        var second = telescopeDateDetails.TelescopeTime.Substring(6, 2).ToInteger();
 
                         var utcDate = new DateTime(year, month, day, hour, minute, second, DateTimeKind.Utc) +
                                       telescopeDateDetails.UtcCorrection;