Add a test for microsoft#61070

Author: alexdima

src/vs/editor/test/browser/controller/cursor.test.ts

@@ -4878,6 +4878,18 @@ suite('autoClosingPairs', () => {
 		model.undo();
 	}
 
+	test('issue #61070: backtick (`) should auto-close after a word character', () => {
+		let mode = new AutoClosingMode();
+		usingCursor({
+			text: ['const markup = highlight'],
+			languageId: mode.languageId
+		}, (editor, model, viewModel) => {
+			model.forceTokenization(1);
+			assertType(editor, model, viewModel, 1, 25, '`', '``', `auto closes \` @ (1, 25)`);
+		});
+		mode.dispose();
+	});
+
 	test('open parens: default', () => {
 		let mode = new AutoClosingMode();
 		usingCursor({