test(pipe): add dtslint test for rest parameters overload (ReactiveX#…

…4109)
dkosasih · Sep 8, 2018 · 9499645 · 9499645
1 parent 137cb92
commit 9499645
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/spec-dtslint/util/pipe-spec.ts b/spec-dtslint/util/pipe-spec.ts
@@ -44,6 +44,14 @@ it('should infer for 9 arguments', () => {
  const o = pipe(a('0', '1'), a('1', '2'), a('2', '3'), a('3', '4'), a('4', '5'), a('5', '6'), a('6', '7'), a('7', '8'), a('8', '9')); // $ExpectType UnaryFunction<"0", "9">
 });
 
+it('should infer {} for more than 9 arguments', () => {
+ const o = pipe(a('0', '1'), a('1', '2'), a('2', '3'), a('3', '4'), a('4', '5'), a('5', '6'), a('6', '7'), a('7', '8'), a('8', '9'), a('9', '10')); // $ExpectType UnaryFunction<"0", {}>
+});
+
+it('should require a type assertion for more than 9 arguments', () => {
+ const o: UnaryFunction<'0', '10'> = pipe(a('0', '1'), a('1', '2'), a('2', '3'), a('3', '4'), a('4', '5'), a('5', '6'), a('6', '7'), a('7', '8'), a('8', '9'), a('9', '10')); // $ExpectError
+});
+
 it('should enforce types for the 2nd argument', () => {
  const o = pipe(a('0', '1'), a('#', '2')); // $ExpectError
 });