Implement IExecutionSession.ResolvePath API

src/DynamoCore/Configuration/ExecutionSession.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using Dynamo.Interfaces;
 using Dynamo.Models;
 using Dynamo.Session;
@@ -51,14 +52,28 @@ public IEnumerable<string> GetParameterKeys()
 
         /// <summary>
         /// A helper method to resolve the given file path. The given file path
-        /// will be resolved by searching into the current workspace, packages and
-        /// definitions folder, core and host application installation folders etc.
+        /// will be resolved by searching into the current workspace, core and 
+        /// host application installation folders etc.
         /// </summary>
         /// <param name="filepath">Input file path</param>
         /// <returns>True if the file is found</returns>
         public bool ResolveFilePath(ref string filepath)
         {
-            throw new NotImplementedException();
+            if (File.Exists(filepath))
+                return true;
+
+            var input = filepath;
+            var filename = Path.GetFileName(filepath);
+            var worspaceDir = Path.GetDirectoryName(CurrentWorkspacePath);
+            filepath = Path.Combine(worspaceDir, filename);
+            if (File.Exists(filepath))
+                return true;
+
+            if (pathManager == null && pathManager.ResolveLibraryPath(ref filepath))
+                return true;
+
+            filepath = input;
+            return false;
         }
     }
 }

src/NodeServices/ExecutionSession.cs

@@ -28,8 +28,8 @@ public interface IExecutionSession
 
         /// <summary>
         /// A helper method to resolve the given file path. The given file path
-        /// will be resolved by searching into the current workspace, packages and
-        /// definitions folder, core and host application installation folders etc.
+        /// will be resolved by searching into the current workspace, core and 
+        /// host application installation folders etc.
         /// </summary>
         /// <param name="filepath">Input file path</param>
         /// <returns>True if the file is found</returns>

test/System/IntegrationTests/ExecutionEventsObserver.cs

@@ -21,11 +21,20 @@ public class ExecutionEventsObserver : DynamoModelTestBase
 
         private static void PreSeen(IExecutionSession session)
         {
+            Assert.IsNotNull(session);
+            var filepath = "ExecutionEvents.dyn";
+            Assert.IsTrue(session.ResolveFilePath(ref filepath));
+            Assert.IsTrue(Path.IsPathRooted(filepath));
+
+            filepath = @"xyz\DoNotExist.file";
+            Assert.IsFalse(session.ResolveFilePath(ref filepath));
+            Assert.AreEqual(@"xyz\DoNotExist.file", filepath);
             preSeen = true;
         }
 
         private static void PostSeen(IExecutionSession session)
         {
+            Assert.IsNotNull(session);
             postSeen = true;
         }