Fix regression. Add test case. (#6993)

* Add test case.
* Fix regression bug.

Author: sean-mcmanus

Extension/.vscode/launch.json

@@ -98,7 +98,7 @@
 			"request": "launch",
 			"runtimeExecutable": "${execPath}",
 			"args": [
-				"${workspaceFolder}/test/integrationTests/testAssets/SimpleCppProject",
+				"${workspaceFolder}/test/integrationTests/testAssets/SimpleCppProject/simpleCppProject.code-workspace",
 				"--extensionDevelopmentPath=${workspaceFolder}",
 				"--extensionTestsPath=${workspaceFolder}/out/test/integrationTests/languageServer/index"
 			],

Extension/src/LanguageServer/client.ts

@@ -705,7 +705,7 @@ export class DefaultClient implements Client {
 
     constructor(allClients: ClientCollection, workspaceFolder?: vscode.WorkspaceFolder) {
         this.rootFolder = workspaceFolder;
-        this.rootRealPath = this.RootPath ? fs.realpathSync(this.RootPath) : "";
+        this.rootRealPath = this.RootPath ? (fs.existsSync(this.RootPath) ? fs.realpathSync(this.RootPath) : this.RootPath) : "";
         let storagePath: string | undefined;
         if (util.extensionContext) {
             const path: string | undefined = util.extensionContext.storageUri?.fsPath;

Extension/test/integrationTests/languageServer/runTest.ts

@@ -12,7 +12,7 @@ async function main() {
         // Passed to --extensionTestsPath
         const extensionTestsPath = path.resolve(__dirname, './index');
 
-        const testWorkspace = path.resolve(extensionDevelopmentPath, 'test/integrationTests/testAssets/SimpleCppProject');
+        const testWorkspace = path.resolve(extensionDevelopmentPath, 'test/integrationTests/testAssets/SimpleCppProject/simpleCppProject.code-workspace');
 
         const launchArgs = [ "--disable-extensions", testWorkspace ];
 

Extension/test/integrationTests/testAssets/SimpleCppProject/simpleCppProject.code-workspace

@@ -0,0 +1,10 @@
+{
+	"folders": [
+		{
+			"path": "."
+		},
+		{
+			"path": "../nonExistent"
+		}
+	]
+}