Add failing test.

tests/cases/fourslash/importFixesWithExistingDottedRequire.ts

@@ -0,0 +1,14 @@
+/// <reference path="./fourslash.ts" />
+
+// @allowJs: true
+// @module: commonjs
+// @Filename: /library.js
+//// export function aaa() {}
+//// export function bbb() {}
+
+// @Filename: /foo.js
+//// var a = require("./library").aaa;
+//// bbb/**/
+
+goTo.marker();
+verify.codeFixAvailable();