test(share): add test that verifies Promise support

Author: jakovljevic-mladen

spec-dtslint/operators/share-spec.ts

@@ -8,3 +8,8 @@ it('should infer correctly', () => {
 it('should enforce types', () => {
   const o = of('foo', 'bar', 'baz').pipe(share('abc')); // $ExpectError
 });
+
+it('should support Promises', () => {
+  const factory = () => Promise.resolve();
+  of(1, 2, 3).pipe(share({ resetOnError: factory, resetOnComplete: factory, resetOnRefCountZero: factory })); // $ExpectType Observable<number>
+});