[Tests] order: Add unit test for TypeScript's "export import"

CHANGELOG.md

@@ -15,6 +15,7 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 
 ### Changed
 - [`no-extraneous-dependencies`]: add tests for importing types ([#1824], thanks [@taye])
+- [`order`]: Add unit test for TypeScript's "export import" ([#1830], thanks [@be5invis])
 
 ## [2.21.2] - 2020-06-09
 ### Fixed
@@ -712,6 +713,7 @@ for info on changes for earlier releases.
 
 [`memo-parser`]: ./memo-parser/README.md
 
+[#1830]: https://github.com/benmosher/eslint-plugin-import/pull/1830
 [#1824]: https://github.com/benmosher/eslint-plugin-import/pull/1824
 [#1823]: https://github.com/benmosher/eslint-plugin-import/pull/1823
 [#1822]: https://github.com/benmosher/eslint-plugin-import/pull/1822
@@ -1235,3 +1237,4 @@ for info on changes for earlier releases.
 [@fernandopasik]: https://github.com/fernandopasik
 [@taye]: https://github.com/taye
 [@AndrewLeedham]: https://github.com/AndrewLeedham
+[@be5invis]: https://github.com/be5invis

tests/src/rules/order.js

@@ -753,6 +753,21 @@ ruleTester.run('order', rule, {
           },
         ],
       }),
+      test({
+        code: `
+          import { a } from "./a";
+          export namespace SomeNamespace {
+              export import a2 = a;
+          }
+        `,
+        parser,
+        options: [
+          {
+            groups: ['external', 'index'],
+            alphabetize: { order: 'asc' },
+          },
+        ],
+      }),
     ]),
   ],
   invalid: [