test(dtslint): add bufferCount (#4194)

spec-dtslint/operators/bufferCount-spec.ts

@@ -0,0 +1,19 @@
+import { of } from 'rxjs';
+import { bufferCount } from 'rxjs/operators';
+
+it('should infer correctly', () => {
+ const o = of(1, 2, 3).pipe(bufferCount(1)); // $ExpectType Observable<number[]>
+ const p = of(1, 2, 3).pipe(bufferCount(1, 7)); // $ExpectType Observable<number[]>
+});
+
+it('should enforce types', () => {
+ const o = of(1, 2, 3).pipe(bufferCount()); // $ExpectError
+});
+
+it('should enforce type of bufferSize', () => {
+ const o = of(1, 2, 3).pipe(bufferCount('7')); // $ExpectError
+});
+
+it('should enforce type of startBufferEvery', () => {
+ const o = of(1, 2, 3).pipe(bufferCount(1, '7')); // $ExpectError
+});