Add symbols across multi-root workspace unit test

Author: andyleejordan

src/PowerShellEditorServices/Services/Symbols/SymbolReference.cs

@@ -66,5 +66,19 @@ public SymbolReference(
             }
             IsDeclaration = isDeclaration;
         }
+
+        /// <summary>
+        /// This is only used for unit tests!
+        /// </summary>
+        internal SymbolReference(string id, SymbolType type)
+        {
+            Id = id;
+            Type = type;
+            Name = "";
+            NameRegion = new("", "", 0, 0, 0, 0, 0, 0);
+            ScriptRegion = NameRegion;
+            SourceLine = "";
+            FilePath = "";
+        }
     }
 }

test/PowerShellEditorServices.Test/Language/SymbolsServiceTests.cs

@@ -229,6 +229,23 @@ public async Task FindsReferencesOnFunction()
             });
         }
 
+        [Fact]
+        public async Task FindsReferenceAcrossMultiRootWorkspace()
+        {
+            workspace.WorkspaceFolders = new[] { "Debugging", "ParameterHints", "SymbolDetails" }
+                .Select(i => new WorkspaceFolder
+                {
+                    Uri = DocumentUri.FromFileSystemPath(TestUtilities.GetSharedPath(i))
+                }).ToList();
+
+            SymbolReference symbol = new("fn Get-Process", SymbolType.Function);
+            IEnumerable<SymbolReference> symbols = await symbolsService.ScanForReferencesOfSymbolAsync(symbol).ConfigureAwait(true);
+            Assert.Collection(symbols.OrderBy(i => i.FilePath),
+                i => Assert.EndsWith("VariableTest.ps1", i.FilePath),
+                i => Assert.EndsWith("ParamHints.ps1", i.FilePath),
+                i => Assert.EndsWith("SymbolDetails.ps1", i.FilePath));
+        }
+
         [Fact]
         public async Task FindsReferencesOnFunctionIncludingAliases()
         {