Tasks Log.HasLoggedError now respects MSBuildWarningsAsErrors

ref/Microsoft.Build.Framework/net/Microsoft.Build.Framework.cs

@@ -211,6 +211,10 @@ public partial interface IBuildEngine7 : Microsoft.Build.Framework.IBuildEngine,
     {
         bool AllowFailureWithoutError { get; set; }
     }
+    public partial interface IBuildEngine8 : Microsoft.Build.Framework.IBuildEngine, Microsoft.Build.Framework.IBuildEngine2, Microsoft.Build.Framework.IBuildEngine3, Microsoft.Build.Framework.IBuildEngine4, Microsoft.Build.Framework.IBuildEngine5, Microsoft.Build.Framework.IBuildEngine6, Microsoft.Build.Framework.IBuildEngine7
+    {
+        bool ShouldTreatWarningAsError(string warningCode);
+    }
     public partial interface ICancelableTask : Microsoft.Build.Framework.ITask
     {
         void Cancel();

ref/Microsoft.Build.Framework/netstandard/Microsoft.Build.Framework.cs

@@ -211,6 +211,10 @@ public partial interface IBuildEngine7 : Microsoft.Build.Framework.IBuildEngine,
     {
         bool AllowFailureWithoutError { get; set; }
     }
+    public partial interface IBuildEngine8 : Microsoft.Build.Framework.IBuildEngine, Microsoft.Build.Framework.IBuildEngine2, Microsoft.Build.Framework.IBuildEngine3, Microsoft.Build.Framework.IBuildEngine4, Microsoft.Build.Framework.IBuildEngine5, Microsoft.Build.Framework.IBuildEngine6, Microsoft.Build.Framework.IBuildEngine7
+    {
+        bool ShouldTreatWarningAsError(string warningCode);
+    }
     public partial interface ICancelableTask : Microsoft.Build.Framework.ITask
     {
         void Cancel();

ref/Microsoft.Build.Utilities.Core/net/Microsoft.Build.Utilities.Core.cs

@@ -353,6 +353,7 @@ public abstract partial class Task : Microsoft.Build.Framework.ITask
         public Microsoft.Build.Framework.IBuildEngine5 BuildEngine5 { get { throw null; } }
         public Microsoft.Build.Framework.IBuildEngine6 BuildEngine6 { get { throw null; } }
         public Microsoft.Build.Framework.IBuildEngine7 BuildEngine7 { get { throw null; } }
+        public Microsoft.Build.Framework.IBuildEngine8 BuildEngine8 { get { throw null; } }
         protected string HelpKeywordPrefix { get { throw null; } set { } }
         public Microsoft.Build.Framework.ITaskHost HostObject { get { throw null; } set { } }
         public Microsoft.Build.Utilities.TaskLoggingHelper Log { get { throw null; } }

ref/Microsoft.Build.Utilities.Core/netstandard/Microsoft.Build.Utilities.Core.cs

@@ -198,6 +198,7 @@ public abstract partial class Task : Microsoft.Build.Framework.ITask
         public Microsoft.Build.Framework.IBuildEngine5 BuildEngine5 { get { throw null; } }
         public Microsoft.Build.Framework.IBuildEngine6 BuildEngine6 { get { throw null; } }
         public Microsoft.Build.Framework.IBuildEngine7 BuildEngine7 { get { throw null; } }
+        public Microsoft.Build.Framework.IBuildEngine8 BuildEngine8 { get { throw null; } }
         protected string HelpKeywordPrefix { get { throw null; } set { } }
         public Microsoft.Build.Framework.ITaskHost HostObject { get { throw null; } set { } }
         public Microsoft.Build.Utilities.TaskLoggingHelper Log { get { throw null; } }

src/Build.UnitTests/BackEnd/CustomLogAndReturnTask.cs

@@ -0,0 +1,39 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using Microsoft.Build.Framework;
+using Microsoft.Build.Utilities;
+namespace Microsoft.Build.UnitTests
+{
+    public class CustomLogAndReturnTask : Task
+    {
+        public string WarningCode { get; set; }
+
+        public string ErrorCode { get; set; }
+
+        public bool ReturnHasLoggedErrors { get; set; }
+
+        [Required]
+        public bool Return { get; set; }
+
+        // Unused for now, created for task batching.
+        public ITaskItem[] Sources { get; set; }
+
+        /// <summary>
+        /// This task returns and logs what you want based on the running test.
+        /// </summary>
+        public override bool Execute()
+        {
+            if(!string.IsNullOrEmpty(WarningCode))
+            {
+                Log.LogWarning(null, WarningCode, null, null, 0, 0, 0, 0, "Warning Logged!", null);
+            }
+
+            if(!string.IsNullOrEmpty(ErrorCode))
+            {
+                Log.LogError(null, ErrorCode, null, null, 0, 0, 0, 0, "Error Logged!", null);
+            }
+            return ReturnHasLoggedErrors ? !Log.HasLoggedErrors : Return;
+        }
+    }
+}

src/Build.UnitTests/BackEnd/MockLoggingService.cs

@@ -557,6 +557,11 @@ public bool HasBuildSubmissionLoggedErrors(int submissionId)
             return false;
         }
 
+        public HashSet<string> GetWarningsToBeLoggedAsErrorsByProject(BuildEventContext context)
+        {
+            throw new NotImplementedException();
+        }
+
         #endregion
     }
 }