some test and fixes and

Author: petesramek

src/PolylineAlgorithm/Abstraction/AbstractPolylineDecoder.cs

@@ -7,7 +7,7 @@
 using PolylineAlgorithm.Diagnostics;
 using PolylineAlgorithm.Internal;
 using PolylineAlgorithm.Internal.Diagnostics;
-using PolylineAlgorithm.Internal.Logging;
+using PolylineAlgorithm.Internal.Diagnostics;
 using System.Runtime.CompilerServices;
 
 namespace PolylineAlgorithm.Abstraction {

src/PolylineAlgorithm/Abstraction/AbstractPolylineEncoder.cs

@@ -9,7 +9,7 @@ namespace PolylineAlgorithm.Abstraction;
 using PolylineAlgorithm;
 using PolylineAlgorithm.Internal;
 using PolylineAlgorithm.Internal.Diagnostics;
-using PolylineAlgorithm.Internal.Logging;
+using PolylineAlgorithm.Internal.Diagnostics;
 using System;
 using System.Buffers;
 using System.Diagnostics;
@@ -132,7 +132,7 @@ public TPolyline Encode(ReadOnlySpan<TCoordinate> coordinates) {
         static int GetMaxBufferLength(int count) {
             Debug.Assert(count > 0, "Count must be greater than zero.");
 
-            int requestedBufferLength = count * Defaults.Polyline.Block.Length.Max;
+            int requestedBufferLength = count * 2 * Defaults.Polyline.Block.Length.Max;
 
             Debug.Assert(requestedBufferLength > 0, "Requested buffer length must be greater than zero.");
 

src/PolylineAlgorithm/Internal/CoordinateDelta.cs

@@ -69,5 +69,4 @@ public void Next(int latitude, int longitude) {
     public override readonly string ToString() =>
         $"{{ Coordinate: {{ Latitude: {_current.Latitude}, Longitude: {_current.Longitude} }}, " +
         $"Delta: {{ Latitude: {Latitude}, Longitude: {Longitude} }} }}";
-
 }

src/PolylineAlgorithm/Internal/Defaults.cs

@@ -101,12 +101,12 @@ internal static class Length {
                 /// <summary>
                 /// The minimum number of characters required to represent an encoded value.
                 /// </summary>
-                internal const int Min = 2;
+                internal const int Min = 1;
 
                 /// <summary>
                 /// The maximum number of characters allowed to represent an encoded value.
                 /// </summary>
-                internal const int Max = 14;
+                internal const int Max = 7;
             }
         }
     }

src/PolylineAlgorithm/Internal/Diagnostics/LogDebugExtensions.cs

@@ -3,7 +3,7 @@
 // Licensed under the MIT License. See LICENSE file in the project root for full license information.
 //
 
-namespace PolylineAlgorithm.Internal.Logging;
+namespace PolylineAlgorithm.Internal.Diagnostics;
 
 using Microsoft.Extensions.Logging;
 

src/PolylineAlgorithm/Internal/Diagnostics/LogWarningExtensions.cs

@@ -3,7 +3,7 @@
 // Licensed under the MIT License. See LICENSE file in the project root for full license information.
 //
 
-namespace PolylineAlgorithm.Internal.Logging;
+namespace PolylineAlgorithm.Internal.Diagnostics;
 
 using Microsoft.Extensions.Logging;
 

src/PolylineAlgorithm/PolylineEncoding.cs

@@ -443,7 +443,7 @@ public static void ValidateBlockLength(ReadOnlySpan<char> polyline) {
 
             if (polyline[i] < End) {
                 foundBlockEnd = true;
-                if (blockLen > 7) {
+                if (blockLen > Defaults.Polyline.Block.Length.Max) {
                     ExceptionGuard.ThrowPolylineBlockTooLong(i - blockLen + 1);
                 }
                 blockLen = 0;