Add test

Author: OliverJAsh

tests/cases/fourslash/refactorConvertParamsToDestructuredObject_arrowFunctionWithSingleParameter.ts

@@ -0,0 +1,13 @@
+/// <reference path='fourslash.ts' />
+
+////const foo = /*a*/(a: number)/*b*/ => { };
+////foo(1, 2);
+
+goTo.select("a", "b");
+edit.applyRefactor({
+    refactorName: "Convert parameters to destructured object",
+    actionName: "Convert parameters to destructured object",
+    actionDescription: "Convert parameters to destructured object",
+    newContent: `const foo = ({ a }: { a: number; }) => { };
+foo({ a: 1 });`,
+});