Resurrect FindsReferencesOnFunction and FindsReferencesOnVariable tests

This had been erroneously removed in commit
32451c0 leading to dead code, but were
able to be resurrected without issue.

Author: andyleejordan

test/PowerShellEditorServices.Test.Shared/References/FindsReferencesOnFunction.cs

@@ -5,18 +5,16 @@
 
 namespace Microsoft.PowerShell.EditorServices.Test.Shared.References
 {
-    public class FindsReferencesOnFunction
+    public static class FindsReferencesOnFunctionData
     {
-        public static readonly ScriptRegion SourceDetails =
-            new ScriptRegion(
-                file: TestUtilities.NormalizePath("References/SimpleFile.ps1"),
-                text: string.Empty,
-                startLineNumber: 3,
-                startColumnNumber: 8,
-                startOffset: 0,
-                endLineNumber: 0,
-                endColumnNumber: 0,
-                endOffset: 0);
+        public static readonly ScriptRegion SourceDetails = new(
+            file: TestUtilities.NormalizePath("References/SimpleFile.ps1"),
+            text: string.Empty,
+            startLineNumber: 3,
+            startColumnNumber: 8,
+            startOffset: 0,
+            endLineNumber: 0,
+            endColumnNumber: 0,
+            endOffset: 0);
     }
 }
-

test/PowerShellEditorServices.Test.Shared/References/FindsReferencesonVariable.cs

@@ -5,17 +5,16 @@
 
 namespace Microsoft.PowerShell.EditorServices.Test.Shared.References
 {
-    public class FindsReferencesOnVariable
+    public static class FindsReferencesOnVariableData
     {
-        public static readonly ScriptRegion SourceDetails =
-            new ScriptRegion(
-                file: TestUtilities.NormalizePath("References/SimpleFile.ps1"),
-                text: string.Empty,
-                startLineNumber: 10,
-                startColumnNumber: 17,
-                startOffset: 0,
-                endLineNumber: 0,
-                endColumnNumber: 0,
-                endOffset: 0);
+        public static readonly ScriptRegion SourceDetails = new(
+            file: TestUtilities.NormalizePath("References/SimpleFile.ps1"),
+            text: string.Empty,
+            startLineNumber: 10,
+            startColumnNumber: 17,
+            startOffset: 0,
+            endLineNumber: 0,
+            endColumnNumber: 0,
+            endOffset: 0);
     }
 }

test/PowerShellEditorServices.Test/Language/SymbolsServiceTests.cs

@@ -125,6 +125,15 @@ public async Task FindsFunctionDefinition()
             Assert.Equal("My-Function", definitionResult.SymbolName);
         }
 
+        [Fact]
+         public void FindsReferencesOnFunction()
+        {
+            List<SymbolReference> referencesResult = GetReferences(FindsReferencesOnFunctionData.SourceDetails);
+            Assert.Equal(3, referencesResult.Count);
+            Assert.Equal(1, referencesResult[0].ScriptRegion.StartLineNumber);
+            Assert.Equal(10, referencesResult[0].ScriptRegion.StartColumnNumber);
+        }
+
         [Fact]
         public async Task FindsFunctionDefinitionInDotSourceReference()
         {
@@ -167,6 +176,15 @@ public async Task FindsVariableDefinition()
             Assert.Equal("$things", definitionResult.SymbolName);
         }
 
+        [Fact]
+        public void FindsReferencesOnVariable()
+        {
+            List<SymbolReference> referencesResult = GetReferences(FindsReferencesOnVariableData.SourceDetails);
+            Assert.Equal(3, referencesResult.Count);
+            Assert.Equal(10, referencesResult[referencesResult.Count - 1].ScriptRegion.StartLineNumber);
+            Assert.Equal(13, referencesResult[referencesResult.Count - 1].ScriptRegion.StartColumnNumber);
+        }
+
         [Fact]
         public void FindsOccurrencesOnFunction()
         {