Add Fourslash test for code fix import ExportEqual classnames

Author: aminpaks

tests/cases/fourslash/importNameCodeFixNewImportExportEqualES2015.ts

@@ -0,0 +1,52 @@
+/// <reference path="./fourslash.ts" />
+
+// @filename: /package.json
+//// { "dependencies": { "@types/classnames": "*" } }
+
+// @filename: /tsconfig.json
+//// {
+////   "compilerOptions": {
+////     "module": "esnext",
+////     "target": "es2015",
+////     "esModuleInterop": true,
+////     "allowSyntheticDefaultImports": true
+////   }
+//// }
+
+// @filename: /node_modules/@types/classnames/package.json
+//// { "name": "@types/classnames", "types": "index.d.ts" }
+
+// @filename: /node_modules/@types/classnames/index.d.ts
+//// declare const classNames = () => string;
+//// export = classNames;
+
+// @filename: /SomeReactComponent.tsx
+//// import * as React from 'react';
+////
+//// const el = <div className={class/*0*/}>foo</div>;
+//// const el = <div className={classNames/*1*/}>foo</div>;
+
+goTo.marker("0");
+
+verify.completions({
+  includes: [{
+    name: "classNames",
+    hasAction: true,
+    source: "/node_modules/@types/classnames/index",
+    sortText: completion.SortText.AutoImportSuggestions,
+  }],
+  preferences: {
+      includeCompletionsForModuleExports: true,
+  }
+});
+
+goTo.marker("1");
+
+format.setOption("newLineCharacter", "\n");
+verify.importFixAtPosition([
+`import classNames from 'classnames';
+import * as React from 'react';
+
+const el = <div className={class}>foo</div>;
+const el = <div className={classNames}>foo</div>;`
+]);