add output paths as one of causes to reanalyze solution cralwer. (#31181)

output paths are not specifically affecting semantics of code but some analyzer such as source based test discovery requires it to generate correct data. so they want to be re-analyzed when those are changed as well.

since output path are rarely get changed. decide to add it as one of cause to reanalyze projects.

src/EditorFeatures/Test/SolutionCrawler/WorkCoordinatorTests.cs

@@ -286,6 +286,42 @@ public async Task Project_AnalyzerOptions_Change()
             }
         }
 
+        [Fact]
+        public async Task Project_OutputFilePath_Change()
+        {
+            using (var workspace = new WorkCoordinatorWorkspace(SolutionCrawler))
+            {
+                var solutionInfo = GetInitialSolutionInfo_2Projects_10Documents(workspace);
+                workspace.OnSolutionAdded(solutionInfo);
+                await WaitWaiterAsync(workspace.ExportProvider);
+
+                var projectId = workspace.CurrentSolution.Projects.First(p => p.Name == "P1").Id;
+                var newSolution = workspace.CurrentSolution.WithProjectOutputFilePath(projectId, "/newPath");
+                var worker = await ExecuteOperation(workspace, w => w.ChangeProject(projectId, newSolution));
+
+                Assert.Equal(5, worker.SyntaxDocumentIds.Count);
+                Assert.Equal(5, worker.DocumentIds.Count);
+            }
+        }
+
+        [Fact]
+        public async Task Project_OutputRefFilePath_Change()
+        {
+            using (var workspace = new WorkCoordinatorWorkspace(SolutionCrawler))
+            {
+                var solutionInfo = GetInitialSolutionInfo_2Projects_10Documents(workspace);
+                workspace.OnSolutionAdded(solutionInfo);
+                await WaitWaiterAsync(workspace.ExportProvider);
+
+                var projectId = workspace.CurrentSolution.Projects.First(p => p.Name == "P1").Id;
+                var newSolution = workspace.CurrentSolution.WithProjectOutputRefFilePath(projectId, "/newPath");
+                var worker = await ExecuteOperation(workspace, w => w.ChangeProject(projectId, newSolution));
+
+                Assert.Equal(5, worker.SyntaxDocumentIds.Count);
+                Assert.Equal(5, worker.DocumentIds.Count);
+            }
+        }
+
         [Fact]
         public async Task Test_NeedsReanalysisOnOptionChanged()
         {

src/Features/Core/Portable/SolutionCrawler/WorkCoordinator.cs

@@ -506,7 +506,9 @@ private async Task EnqueueProjectConfigurationChangeWorkItemAsync(ProjectChanges
                     !object.Equals(oldProject.AssemblyName, newProject.AssemblyName) ||
                     !object.Equals(oldProject.Name, newProject.Name) ||
                     !object.Equals(oldProject.AnalyzerOptions, newProject.AnalyzerOptions) ||
-                    !object.Equals(oldProject.DefaultNamespace, newProject.DefaultNamespace))
+                    !object.Equals(oldProject.DefaultNamespace, newProject.DefaultNamespace) ||
+                    !object.Equals(oldProject.OutputFilePath, newProject.OutputFilePath) ||
+                    !object.Equals(oldProject.OutputRefFilePath, newProject.OutputRefFilePath))
                 {
                     projectConfigurationChange = projectConfigurationChange.With(InvocationReasons.ProjectConfigurationChanged);
                 }