Adding diagnostic logs

Author: vagisha-nidhi

src/coverlet.collector/InProcDataCollection/CoverletInProcDataCollector.cs

@@ -1,11 +1,13 @@
 using System;
 using System.Reflection;
+using Coverlet.Collector.Utilities;
 using Coverlet.Core.Instrumentation;
+using Microsoft.VisualStudio.TestPlatform.ObjectModel;
 using Microsoft.VisualStudio.TestPlatform.ObjectModel.DataCollection;
 using Microsoft.VisualStudio.TestPlatform.ObjectModel.DataCollector.InProcDataCollector;
 using Microsoft.VisualStudio.TestPlatform.ObjectModel.InProcDataCollector;
 
-namespace Coverlet.Collector.InProcDataCollector
+namespace Coverlet.Collector.DataCollection
 {
     public class CoverletInProcDataCollector : InProcDataCollection
     {
@@ -37,9 +39,13 @@ public void TestSessionEnd(TestSessionEndArgs testSessionEndArgs)
                 {
                     unloadModule.Invoke(null, new[] { null, EventArgs.Empty });
                 }
-                catch
+                catch(Exception ex)
                 {
                     // Ignore exceptions and continue with the unload
+                    if (EqtTrace.IsWarningEnabled)
+                    {
+                        EqtTrace.Warning("{0}: Failed to unload module with error: {1}", CoverletConstants.InProcDataCollectorName, ex);
+                    }
                 }
             }
         }
@@ -63,9 +69,13 @@ private static Type GetInstrumentationClass(Assembly assembly)
 
                 return null;
             }
-            catch
+            catch(Exception ex)
             {
                 // Avoid crashing if reflection fails.
+                if (EqtTrace.IsWarningEnabled)
+                {
+                    EqtTrace.Warning("{0}: Failed to get Instrumentation class with error: {1}", CoverletConstants.InProcDataCollectorName, ex);
+                }
                 return null;
             }
         }

src/coverlet.collector/Utilities/CoverletConstants.cs

@@ -19,5 +19,6 @@ internal static class CoverletConstants
         public const string TestSourcesPropertyName = "TestSources";
         public const string ReportFormatElementName = "Format";
         public const string DefaultExcludeFilter = "[coverlet.*]*";
+        public const string InProcDataCollectorName = "CoverletInProcDataCollector";
     }
 }